Stojanović, Ksenija A.

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Authority KeyName Variants
orcid::0000-0002-5566-2648
  • Stojanović, Ksenija A. (60)
Projects
Geochemical investigations of sedimentary rocks - fossil fuels and environmental pollutants Geohemijska ispitivanja u funkciji pronalaženja novih ležišta fosilnih goriva i zaštite životne sredine
Magmatism and geodynamics of the Balkan Peninsula from Mesozoic to present day: significance for the formation of metallic and non-metallic mineral deposits Simultaneous Bioremediation and Soilification of Degraded Areas to Preserve Natural Resources of Biologically Active Substances, and Development and Production of Biomaterials and Dietetic Products
Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) Osterreichischer Austauschdienst (OeAD) [SRB 18/2016]
info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/176006/RS/ Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200168 (University of Belgrade, Faculty of Chemistry)
Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200288 (Innovation Center of the Faculty of Chemistry) Pollution Reduction from Thermal Power Plants of the Public Enterprise “Electric Power Industry of Serbia”
Organisation for the Prohibition of Chemical Weapons (OPCW) Project No. 451-03-01039/2015-09/05
Alexander von Humboldt Foundation (Germany) CEEPUS2014(Central European Exchange Program for University Studies)
CNPq Danish Research Council for Nature and Universe (FNU) [21-04-0605]
Earth-Science Studies in Central and South-Eastern Europe (CEEPUS) FAPERJ
The study of physicochemical and biochemical processes in living environment that have impacts on pollution and the investigation of possibilities for minimizing the consequences Petrogenesis and mineral resources of the carpatho-balkanides and their importance in environmental protection
Developing technological processes for nonstandard copper concentrates processing with the aim to decrease pollutants emission Ministry of Science and Environmental Protection of the Republic of Serbia
OeAD (Osterreichische Austauschdienst) [SRB 18/2016] OeAD (Project No. SRB 18/2016 and Ernst Mach Grant, Ernst Mach— worldwide, Ref. no. ICM-2017-06512)
OeAD (Project No. SRB 18/2016 and Ernst Mach Grant, Ernst Mach—worldwide, Ref. no. ICM-2017-06512) Osterreichischer Austauschdienst (OaED) [SRB 18/2016]
PETROBRAS-Brazil

Author's Bibliography

Study of the synergetic effect of co-pyrolysis of lignite and high-density polyethylene aiming to improve utilization of low-rank coal

Kojić, Ivan; Bechtel, Achim; Aleksić, Nikoleta; Životić, Dragana; Trifunović, Snežana S.; Gajica, Gordana; Stojanović, Ksenija A.

(MDPI, 2021)

TY  - JOUR
AU  - Kojić, Ivan
AU  - Bechtel, Achim
AU  - Aleksić, Nikoleta
AU  - Životić, Dragana
AU  - Trifunović, Snežana S.
AU  - Gajica, Gordana
AU  - Stojanović, Ksenija A.
PY  - 2021
UR  - https://www.mdpi.com/2073-4360/13/5/759
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4397
AB  - The mutual impact of low-quality lignite and high-density polyethylene (HDPE) during open system pyrolysis was investigated, aiming to improve utilization of lignite with simultaneous treatment of HDPE waste. Pyrolysis of lignite, HDPE, and their mixture (mass ratio, 1:1) was performed at temperatures 400, 450, 500, 550, and 600 °C. Initial substrates and pyrolysis products were characterized by thermogravimetric analysis (TGA), gas chromatography–mass spectrometry (GC–MS), specific carbon isotope analysis of individual hydrocarbons (δ13C), Rock-Eval pyrolysis, and elemental analysis. The positive synergetic effect during co-pyrolysis of lignite/HDPE mixture was observed at temperatures ≥450 °C, with the greatest being at 500 °C. The highest yield of liquid co-pyrolysis products with a similar composition to that of crude oils is also noticed at 500 °C. The yields of liquid and gaseous products and quality of pyrolytic products obtained by co-pyrolysis of lignite/HDPE mixture are notably improved compared with pyrolysis of lignite alone. On the other hand, data obtained from pyrolysis of HDPE alone indicate that it cannot be concurrent to well-developed catalytic thermal processes for polymer recycling. However, concerning the huge amount of produced HDPE, at least part of this plastic material can be reused for advanced thermal treatment of lignite, particularly in countries where this low-rank coal represents the main source of energy.
PB  - MDPI
T2  - Polymers
T1  - Study of the synergetic effect of co-pyrolysis of lignite and high-density polyethylene aiming to improve utilization of low-rank coal
VL  - 13
IS  - 5
SP  - 759
DO  - 10.3390/polym13050759
ER  - 
@article{
author = "Kojić, Ivan and Bechtel, Achim and Aleksić, Nikoleta and Životić, Dragana and Trifunović, Snežana S. and Gajica, Gordana and Stojanović, Ksenija A.",
year = "2021",
abstract = "The mutual impact of low-quality lignite and high-density polyethylene (HDPE) during open system pyrolysis was investigated, aiming to improve utilization of lignite with simultaneous treatment of HDPE waste. Pyrolysis of lignite, HDPE, and their mixture (mass ratio, 1:1) was performed at temperatures 400, 450, 500, 550, and 600 °C. Initial substrates and pyrolysis products were characterized by thermogravimetric analysis (TGA), gas chromatography–mass spectrometry (GC–MS), specific carbon isotope analysis of individual hydrocarbons (δ13C), Rock-Eval pyrolysis, and elemental analysis. The positive synergetic effect during co-pyrolysis of lignite/HDPE mixture was observed at temperatures ≥450 °C, with the greatest being at 500 °C. The highest yield of liquid co-pyrolysis products with a similar composition to that of crude oils is also noticed at 500 °C. The yields of liquid and gaseous products and quality of pyrolytic products obtained by co-pyrolysis of lignite/HDPE mixture are notably improved compared with pyrolysis of lignite alone. On the other hand, data obtained from pyrolysis of HDPE alone indicate that it cannot be concurrent to well-developed catalytic thermal processes for polymer recycling. However, concerning the huge amount of produced HDPE, at least part of this plastic material can be reused for advanced thermal treatment of lignite, particularly in countries where this low-rank coal represents the main source of energy.",
publisher = "MDPI",
journal = "Polymers",
title = "Study of the synergetic effect of co-pyrolysis of lignite and high-density polyethylene aiming to improve utilization of low-rank coal",
volume = "13",
number = "5",
pages = "759",
doi = "10.3390/polym13050759"
}
Kojić, I., Bechtel, A., Aleksić, N., Životić, D., Trifunović, S. S., Gajica, G.,& Stojanović, K. A.. (2021). Study of the synergetic effect of co-pyrolysis of lignite and high-density polyethylene aiming to improve utilization of low-rank coal. in Polymers
MDPI., 13(5), 759.
https://doi.org/10.3390/polym13050759
Kojić I, Bechtel A, Aleksić N, Životić D, Trifunović SS, Gajica G, Stojanović KA. Study of the synergetic effect of co-pyrolysis of lignite and high-density polyethylene aiming to improve utilization of low-rank coal. in Polymers. 2021;13(5):759.
doi:10.3390/polym13050759 .
Kojić, Ivan, Bechtel, Achim, Aleksić, Nikoleta, Životić, Dragana, Trifunović, Snežana S., Gajica, Gordana, Stojanović, Ksenija A., "Study of the synergetic effect of co-pyrolysis of lignite and high-density polyethylene aiming to improve utilization of low-rank coal" in Polymers, 13, no. 5 (2021):759,
https://doi.org/10.3390/polym13050759 . .
1

Supplementary data for the article: Kojić, I.; Bechtel, A.; Aleksić, N.; Životić, D.; Trifunović, S.; Gajica, G.; Stojanović, K. Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal. Polymers 2021, 13 (5), 759. https://doi.org/10.3390/polym13050759.

Kojić, Ivan; Bechtel, Achim; Aleksić, Nikoleta; Životić, Dragana; Trifunović, Snežana S.; Gajica, Gordana; Stojanović, Ksenija A.

(MDPI, 2021)

TY  - DATA
AU  - Kojić, Ivan
AU  - Bechtel, Achim
AU  - Aleksić, Nikoleta
AU  - Životić, Dragana
AU  - Trifunović, Snežana S.
AU  - Gajica, Gordana
AU  - Stojanović, Ksenija A.
PY  - 2021
UR  - https://www.mdpi.com/2073-4360/13/5/759
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4398
PB  - MDPI
T2  - Polymers
T1  - Supplementary data for the article: Kojić, I.; Bechtel, A.; Aleksić, N.; Životić, D.; Trifunović, S.; Gajica, G.; Stojanović, K. Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal. Polymers 2021, 13 (5), 759. https://doi.org/10.3390/polym13050759.
ER  - 
@misc{
author = "Kojić, Ivan and Bechtel, Achim and Aleksić, Nikoleta and Životić, Dragana and Trifunović, Snežana S. and Gajica, Gordana and Stojanović, Ksenija A.",
year = "2021",
publisher = "MDPI",
journal = "Polymers",
title = "Supplementary data for the article: Kojić, I.; Bechtel, A.; Aleksić, N.; Životić, D.; Trifunović, S.; Gajica, G.; Stojanović, K. Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal. Polymers 2021, 13 (5), 759. https://doi.org/10.3390/polym13050759."
}
Kojić, I., Bechtel, A., Aleksić, N., Životić, D., Trifunović, S. S., Gajica, G.,& Stojanović, K. A.. (2021). Supplementary data for the article: Kojić, I.; Bechtel, A.; Aleksić, N.; Životić, D.; Trifunović, S.; Gajica, G.; Stojanović, K. Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal. Polymers 2021, 13 (5), 759. https://doi.org/10.3390/polym13050759.. in Polymers
MDPI..
Kojić I, Bechtel A, Aleksić N, Životić D, Trifunović SS, Gajica G, Stojanović KA. Supplementary data for the article: Kojić, I.; Bechtel, A.; Aleksić, N.; Životić, D.; Trifunović, S.; Gajica, G.; Stojanović, K. Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal. Polymers 2021, 13 (5), 759. https://doi.org/10.3390/polym13050759.. in Polymers. 2021;..
Kojić, Ivan, Bechtel, Achim, Aleksić, Nikoleta, Životić, Dragana, Trifunović, Snežana S., Gajica, Gordana, Stojanović, Ksenija A., "Supplementary data for the article: Kojić, I.; Bechtel, A.; Aleksić, N.; Životić, D.; Trifunović, S.; Gajica, G.; Stojanović, K. Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal. Polymers 2021, 13 (5), 759. https://doi.org/10.3390/polym13050759." in Polymers (2021).

Lipid composition of the microbial mat from a hypersaline environment (Vermelha Lagoon, Rio de Janeiro, Brazil)

Silva, Tais Freitas Da; Gomes, Sinda Beatriz Carvalhal; Silva, Frederico Sobrinho Da; Stojanović, Ksenija A.; Castro, Rosane Nora; Filho, João Graciano Mendonça; Santos, Milton

(Society for Sedimentary Geology, 2021)

TY  - JOUR
AU  - Silva, Tais Freitas Da
AU  - Gomes, Sinda Beatriz Carvalhal
AU  - Silva, Frederico Sobrinho Da
AU  - Stojanović, Ksenija A.
AU  - Castro, Rosane Nora
AU  - Filho, João Graciano Mendonça
AU  - Santos, Milton
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4440
UR  - https://pubs.geoscienceworld.org/sepm/jsedres/article-abstract/91/4/349/595902/Lipid-composition-of-the-microbial-mat-from-a
AB  - This study determines organic-matter (OM) composition in the different color layers of a stratified hypersaline microbial mat and verifies the hypothesis that each layer includes a distinct group of lipids. The relation of precursor lipids from the microbial mat to the hydrocarbon composition in fossil records was also evaluated. To that end, the composition was studied of glycolipids (GLs), phospholipids (PLs), and “neutral” lipids (NLs, including hydrocarbons, n-alkanols, sterols, hopanols, free fatty acids, and wax esters) in four different color layers (A–D; depth intervals: up to 0.5 cm, 0.5–1.0 cm, 1.5–3.0 cm, and 3.0–6.0 cm, respectively) of a stratified hypersaline mat from the Vermelha Lagoon, Rio de Janeiro, Brazil.
PB  - Society for Sedimentary Geology
T2  - Journal of Sedimentary Research
T1  - Lipid composition of the microbial mat from a hypersaline environment (Vermelha Lagoon, Rio de Janeiro, Brazil)
VL  - 91
IS  - 4
SP  - 349
EP  - 361
DO  - 10.2110/jsr.2021.01
ER  - 
@article{
author = "Silva, Tais Freitas Da and Gomes, Sinda Beatriz Carvalhal and Silva, Frederico Sobrinho Da and Stojanović, Ksenija A. and Castro, Rosane Nora and Filho, João Graciano Mendonça and Santos, Milton",
year = "2021",
abstract = "This study determines organic-matter (OM) composition in the different color layers of a stratified hypersaline microbial mat and verifies the hypothesis that each layer includes a distinct group of lipids. The relation of precursor lipids from the microbial mat to the hydrocarbon composition in fossil records was also evaluated. To that end, the composition was studied of glycolipids (GLs), phospholipids (PLs), and “neutral” lipids (NLs, including hydrocarbons, n-alkanols, sterols, hopanols, free fatty acids, and wax esters) in four different color layers (A–D; depth intervals: up to 0.5 cm, 0.5–1.0 cm, 1.5–3.0 cm, and 3.0–6.0 cm, respectively) of a stratified hypersaline mat from the Vermelha Lagoon, Rio de Janeiro, Brazil.",
publisher = "Society for Sedimentary Geology",
journal = "Journal of Sedimentary Research",
title = "Lipid composition of the microbial mat from a hypersaline environment (Vermelha Lagoon, Rio de Janeiro, Brazil)",
volume = "91",
number = "4",
pages = "349-361",
doi = "10.2110/jsr.2021.01"
}
Silva, T. F. D., Gomes, S. B. C., Silva, F. S. D., Stojanović, K. A., Castro, R. N., Filho, J. G. M.,& Santos, M.. (2021). Lipid composition of the microbial mat from a hypersaline environment (Vermelha Lagoon, Rio de Janeiro, Brazil). in Journal of Sedimentary Research
Society for Sedimentary Geology., 91(4), 349-361.
https://doi.org/10.2110/jsr.2021.01
Silva TFD, Gomes SBC, Silva FSD, Stojanović KA, Castro RN, Filho JGM, Santos M. Lipid composition of the microbial mat from a hypersaline environment (Vermelha Lagoon, Rio de Janeiro, Brazil). in Journal of Sedimentary Research. 2021;91(4):349-361.
doi:10.2110/jsr.2021.01 .
Silva, Tais Freitas Da, Gomes, Sinda Beatriz Carvalhal, Silva, Frederico Sobrinho Da, Stojanović, Ksenija A., Castro, Rosane Nora, Filho, João Graciano Mendonça, Santos, Milton, "Lipid composition of the microbial mat from a hypersaline environment (Vermelha Lagoon, Rio de Janeiro, Brazil)" in Journal of Sedimentary Research, 91, no. 4 (2021):349-361,
https://doi.org/10.2110/jsr.2021.01 . .
1

Efficient biodegradation of petroleum n-alkanes and polycyclic aromatic hydrocarbons by polyextremophilic Pseudomonas aeruginosa san ai with multidegradative capacity

Medić, Ana; Lješević, Marija; Inui, Hideyuku; Beškoski, Vladimir; Kojić, Ivan; Stojanović, Ksenija A.; Karadžić, Ivanka M.

(Royal Society of Chemistry, 2020)

TY  - JOUR
AU  - Medić, Ana
AU  - Lješević, Marija
AU  - Inui, Hideyuku
AU  - Beškoski, Vladimir
AU  - Kojić, Ivan
AU  - Stojanović, Ksenija A.
AU  - Karadžić, Ivanka M.
PY  - 2020
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3995
AB  - Pseudomonas aeruginosa san ai, an alkaliphilic, metallotolerant bacterium, degraded individual selected petroleum compounds, i.e., n-alkanes (n-hexadecane, n-nonadecane) and polycyclic aromatic hydrocarbons (fluorene, phenanthrene, pyrene) with efficiency of 80%, 98%, 96%, 50% and 41%, respectively, at initial concentrations of 20 mg L−1 and in seven days. P. aeruginosa san ai showed a high biodegradative capacity on complex hydrocarbon mixtures, the aliphatic and aromatic fractions from crude oil. The efficiency of P. aeruginosa san ai degradation of crude oil fractions in seven days reached stage 3–4 of the oil biodegradation scale, which ranges from 0 (no biodegradation) to 10 (maximum biodegradation). Identified metabolites concomitant with genomic and enzymatic data indicated the terminal oxidation pathway for the n-alkane degradation, and the salicylate and phthalate pathways for fluorene biodegradation. Polyextremophilic P. aeruginosa san ai, as a biosurfactant producer with multidegradative capacity for hydrocarbons, can be used in an improved strategy for environmental bioremediation of hydrocarbon-contaminated sites, including extreme habitats characterized by low or elevated temperatures, acidic or alkaline pH or high concentrations of heavy metals.
PB  - Royal Society of Chemistry
T2  - RSC Advances
T1  - Efficient biodegradation of petroleum n-alkanes and polycyclic aromatic hydrocarbons by polyextremophilic Pseudomonas aeruginosa san ai with multidegradative capacity
VL  - 10
IS  - 24
SP  - 14060
EP  - 14070
DO  - 10.1039/C9RA10371F
ER  - 
@article{
author = "Medić, Ana and Lješević, Marija and Inui, Hideyuku and Beškoski, Vladimir and Kojić, Ivan and Stojanović, Ksenija A. and Karadžić, Ivanka M.",
year = "2020",
abstract = "Pseudomonas aeruginosa san ai, an alkaliphilic, metallotolerant bacterium, degraded individual selected petroleum compounds, i.e., n-alkanes (n-hexadecane, n-nonadecane) and polycyclic aromatic hydrocarbons (fluorene, phenanthrene, pyrene) with efficiency of 80%, 98%, 96%, 50% and 41%, respectively, at initial concentrations of 20 mg L−1 and in seven days. P. aeruginosa san ai showed a high biodegradative capacity on complex hydrocarbon mixtures, the aliphatic and aromatic fractions from crude oil. The efficiency of P. aeruginosa san ai degradation of crude oil fractions in seven days reached stage 3–4 of the oil biodegradation scale, which ranges from 0 (no biodegradation) to 10 (maximum biodegradation). Identified metabolites concomitant with genomic and enzymatic data indicated the terminal oxidation pathway for the n-alkane degradation, and the salicylate and phthalate pathways for fluorene biodegradation. Polyextremophilic P. aeruginosa san ai, as a biosurfactant producer with multidegradative capacity for hydrocarbons, can be used in an improved strategy for environmental bioremediation of hydrocarbon-contaminated sites, including extreme habitats characterized by low or elevated temperatures, acidic or alkaline pH or high concentrations of heavy metals.",
publisher = "Royal Society of Chemistry",
journal = "RSC Advances",
title = "Efficient biodegradation of petroleum n-alkanes and polycyclic aromatic hydrocarbons by polyextremophilic Pseudomonas aeruginosa san ai with multidegradative capacity",
volume = "10",
number = "24",
pages = "14060-14070",
doi = "10.1039/C9RA10371F"
}
Medić, A., Lješević, M., Inui, H., Beškoski, V., Kojić, I., Stojanović, K. A.,& Karadžić, I. M.. (2020). Efficient biodegradation of petroleum n-alkanes and polycyclic aromatic hydrocarbons by polyextremophilic Pseudomonas aeruginosa san ai with multidegradative capacity. in RSC Advances
Royal Society of Chemistry., 10(24), 14060-14070.
https://doi.org/10.1039/C9RA10371F
Medić A, Lješević M, Inui H, Beškoski V, Kojić I, Stojanović KA, Karadžić IM. Efficient biodegradation of petroleum n-alkanes and polycyclic aromatic hydrocarbons by polyextremophilic Pseudomonas aeruginosa san ai with multidegradative capacity. in RSC Advances. 2020;10(24):14060-14070.
doi:10.1039/C9RA10371F .
Medić, Ana, Lješević, Marija, Inui, Hideyuku, Beškoski, Vladimir, Kojić, Ivan, Stojanović, Ksenija A., Karadžić, Ivanka M., "Efficient biodegradation of petroleum n-alkanes and polycyclic aromatic hydrocarbons by polyextremophilic Pseudomonas aeruginosa san ai with multidegradative capacity" in RSC Advances, 10, no. 24 (2020):14060-14070,
https://doi.org/10.1039/C9RA10371F . .
14
11
15

Supplementary data for the article: Medić, A.; Lješević, M.; Inui, H.; Beškoski, V.; Kojić, I.; Stojanović, K.; Karadžić, I. Efficient Biodegradation of Petroleum N-Alkanes and Polycyclic Aromatic Hydrocarbons by Polyextremophilic Pseudomonas Aeruginosa San Ai with Multidegradative Capacity. RSC Adv. 2020, 10 (24), 14060–14070. https://doi.org/10.1039/C9RA10371F

Medić, Ana; Lješević, Marija; Inui, Hideyuku; Beškoski, Vladimir; Kojić, Ivan; Stojanović, Ksenija A.; Karadžić, Ivanka M.

(Royal Society of Chemistry, 2020)

TY  - DATA
AU  - Medić, Ana
AU  - Lješević, Marija
AU  - Inui, Hideyuku
AU  - Beškoski, Vladimir
AU  - Kojić, Ivan
AU  - Stojanović, Ksenija A.
AU  - Karadžić, Ivanka M.
PY  - 2020
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3996
PB  - Royal Society of Chemistry
T2  - RSC Advances
T1  - Supplementary data for the article: Medić, A.; Lješević, M.; Inui, H.; Beškoski, V.; Kojić, I.; Stojanović, K.; Karadžić, I. Efficient Biodegradation of Petroleum N-Alkanes and Polycyclic Aromatic Hydrocarbons by Polyextremophilic Pseudomonas Aeruginosa San Ai with Multidegradative Capacity. RSC Adv. 2020, 10 (24), 14060–14070. https://doi.org/10.1039/C9RA10371F
ER  - 
@misc{
author = "Medić, Ana and Lješević, Marija and Inui, Hideyuku and Beškoski, Vladimir and Kojić, Ivan and Stojanović, Ksenija A. and Karadžić, Ivanka M.",
year = "2020",
publisher = "Royal Society of Chemistry",
journal = "RSC Advances",
title = "Supplementary data for the article: Medić, A.; Lješević, M.; Inui, H.; Beškoski, V.; Kojić, I.; Stojanović, K.; Karadžić, I. Efficient Biodegradation of Petroleum N-Alkanes and Polycyclic Aromatic Hydrocarbons by Polyextremophilic Pseudomonas Aeruginosa San Ai with Multidegradative Capacity. RSC Adv. 2020, 10 (24), 14060–14070. https://doi.org/10.1039/C9RA10371F"
}
Medić, A., Lješević, M., Inui, H., Beškoski, V., Kojić, I., Stojanović, K. A.,& Karadžić, I. M.. (2020). Supplementary data for the article: Medić, A.; Lješević, M.; Inui, H.; Beškoski, V.; Kojić, I.; Stojanović, K.; Karadžić, I. Efficient Biodegradation of Petroleum N-Alkanes and Polycyclic Aromatic Hydrocarbons by Polyextremophilic Pseudomonas Aeruginosa San Ai with Multidegradative Capacity. RSC Adv. 2020, 10 (24), 14060–14070. https://doi.org/10.1039/C9RA10371F. in RSC Advances
Royal Society of Chemistry..
Medić A, Lješević M, Inui H, Beškoski V, Kojić I, Stojanović KA, Karadžić IM. Supplementary data for the article: Medić, A.; Lješević, M.; Inui, H.; Beškoski, V.; Kojić, I.; Stojanović, K.; Karadžić, I. Efficient Biodegradation of Petroleum N-Alkanes and Polycyclic Aromatic Hydrocarbons by Polyextremophilic Pseudomonas Aeruginosa San Ai with Multidegradative Capacity. RSC Adv. 2020, 10 (24), 14060–14070. https://doi.org/10.1039/C9RA10371F. in RSC Advances. 2020;..
Medić, Ana, Lješević, Marija, Inui, Hideyuku, Beškoski, Vladimir, Kojić, Ivan, Stojanović, Ksenija A., Karadžić, Ivanka M., "Supplementary data for the article: Medić, A.; Lješević, M.; Inui, H.; Beškoski, V.; Kojić, I.; Stojanović, K.; Karadžić, I. Efficient Biodegradation of Petroleum N-Alkanes and Polycyclic Aromatic Hydrocarbons by Polyextremophilic Pseudomonas Aeruginosa San Ai with Multidegradative Capacity. RSC Adv. 2020, 10 (24), 14060–14070. https://doi.org/10.1039/C9RA10371F" in RSC Advances (2020).

Geochemistry of Sediments from the Lopare Basin (Bosnia and Herzegovina): Implications for Paleoclimate, Paleosalinity, Paleoredox and Provenance

Šajnović, Aleksandra; Grba, Nenad; Neubauer, Franz; Kašanin‐Grubin, Milica; Stojanović, Ksenija A.; Petković, Nenad; Jovančićević, Branimir

(Wiley, 2020)

TY  - JOUR
AU  - Šajnović, Aleksandra
AU  - Grba, Nenad
AU  - Neubauer, Franz
AU  - Kašanin‐Grubin, Milica
AU  - Stojanović, Ksenija A.
AU  - Petković, Nenad
AU  - Jovančićević, Branimir
PY  - 2020
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4269
AB  - A combined inorganic and organic geochemical study was carried out on marls and mudstones collected from the Lower Miocene Lopare Basin, Bosnia and Herzegovina. A total of 46 samples collected from two boreholes, Pot 1 (depth of 193 m) and Pot 3 (depth of 344 m), showed that element abundances like boron (B), lithium (Li), strontium (Sr), uranium (U), chromium (Cr), nickel (Ni), magnesium (Mg), sodium (Na) and calcium (Ca) are much higher than average than in the upper continental crust (UCC). Chemical composition indicates at least two sources: (i) Mesozoic ophiolites occurring in the north of the investigated area, and (ii) dacito-andesitic pyroclastics (Mesozoic to Cenozoic). Lopare Basin sedimentation was influenced by strong evaporation resulting in a partly hypersaline lake, which formed during a warm climatic period, probably during the Miocene Climatic Optimum. A brief episode of humid climate conditions resulted in the basin filling-up and deposition of felsic sediments enriched in thorium (Th). Organic geochemistry shows that the majority of studied sediments contains predominantly immature to marginally mature algal organic matter (OM). The biomarker patterns are generally in agreement with the geological history of the Lopare Basin and inorganic and mineralogical data. Conversely, the molecular distribution of n-alkanes as reliable climatic and δ-MTTC as paleosalinity indicators do not support this conclusion.
PB  - Wiley
T2  - Acta Geologica Sinica - English Edition
T1  - Geochemistry of Sediments from the Lopare Basin (Bosnia and Herzegovina): Implications for Paleoclimate, Paleosalinity, Paleoredox and Provenance
VL  - 94
IS  - 5
SP  - 1591
EP  - 1618
DO  - 10.1111/1755-6724.14324
ER  - 
@article{
author = "Šajnović, Aleksandra and Grba, Nenad and Neubauer, Franz and Kašanin‐Grubin, Milica and Stojanović, Ksenija A. and Petković, Nenad and Jovančićević, Branimir",
year = "2020",
abstract = "A combined inorganic and organic geochemical study was carried out on marls and mudstones collected from the Lower Miocene Lopare Basin, Bosnia and Herzegovina. A total of 46 samples collected from two boreholes, Pot 1 (depth of 193 m) and Pot 3 (depth of 344 m), showed that element abundances like boron (B), lithium (Li), strontium (Sr), uranium (U), chromium (Cr), nickel (Ni), magnesium (Mg), sodium (Na) and calcium (Ca) are much higher than average than in the upper continental crust (UCC). Chemical composition indicates at least two sources: (i) Mesozoic ophiolites occurring in the north of the investigated area, and (ii) dacito-andesitic pyroclastics (Mesozoic to Cenozoic). Lopare Basin sedimentation was influenced by strong evaporation resulting in a partly hypersaline lake, which formed during a warm climatic period, probably during the Miocene Climatic Optimum. A brief episode of humid climate conditions resulted in the basin filling-up and deposition of felsic sediments enriched in thorium (Th). Organic geochemistry shows that the majority of studied sediments contains predominantly immature to marginally mature algal organic matter (OM). The biomarker patterns are generally in agreement with the geological history of the Lopare Basin and inorganic and mineralogical data. Conversely, the molecular distribution of n-alkanes as reliable climatic and δ-MTTC as paleosalinity indicators do not support this conclusion.",
publisher = "Wiley",
journal = "Acta Geologica Sinica - English Edition",
title = "Geochemistry of Sediments from the Lopare Basin (Bosnia and Herzegovina): Implications for Paleoclimate, Paleosalinity, Paleoredox and Provenance",
volume = "94",
number = "5",
pages = "1591-1618",
doi = "10.1111/1755-6724.14324"
}
Šajnović, A., Grba, N., Neubauer, F., Kašanin‐Grubin, M., Stojanović, K. A., Petković, N.,& Jovančićević, B.. (2020). Geochemistry of Sediments from the Lopare Basin (Bosnia and Herzegovina): Implications for Paleoclimate, Paleosalinity, Paleoredox and Provenance. in Acta Geologica Sinica - English Edition
Wiley., 94(5), 1591-1618.
https://doi.org/10.1111/1755-6724.14324
Šajnović A, Grba N, Neubauer F, Kašanin‐Grubin M, Stojanović KA, Petković N, Jovančićević B. Geochemistry of Sediments from the Lopare Basin (Bosnia and Herzegovina): Implications for Paleoclimate, Paleosalinity, Paleoredox and Provenance. in Acta Geologica Sinica - English Edition. 2020;94(5):1591-1618.
doi:10.1111/1755-6724.14324 .
Šajnović, Aleksandra, Grba, Nenad, Neubauer, Franz, Kašanin‐Grubin, Milica, Stojanović, Ksenija A., Petković, Nenad, Jovančićević, Branimir, "Geochemistry of Sediments from the Lopare Basin (Bosnia and Herzegovina): Implications for Paleoclimate, Paleosalinity, Paleoredox and Provenance" in Acta Geologica Sinica - English Edition, 94, no. 5 (2020):1591-1618,
https://doi.org/10.1111/1755-6724.14324 . .
1
1
1

Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae

Nytoft, Hans Peter; Kildahl-Andersen, Geir; Lindström, Sofie; Rise, Frode; Bechtel, Achim; Mitrović, Danica D.; Đoković, Nataša; Životić, Dragana R.; Stojanović, Ksenija A.

(Elsevier, 2019)

TY  - JOUR
AU  - Nytoft, Hans Peter
AU  - Kildahl-Andersen, Geir
AU  - Lindström, Sofie
AU  - Rise, Frode
AU  - Bechtel, Achim
AU  - Mitrović, Danica D.
AU  - Đoković, Nataša
AU  - Životić, Dragana R.
AU  - Stojanović, Ksenija A.
PY  - 2019
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2811
AB  - Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian
lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using
NMR-spectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10→20)-abeo-abietane or
icetexane skeleton consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of
the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270 → 146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant in high latitude coals and mudstones ranging fromTriassic to Miocene, and in high latitude oils (Canada and Greenland) sourced from terrigenous organic matter. The trans/(cis+ trans) dehydroicetexane ratio is low in immature sediments, but usually around 0.83 in oils and mature sediments with vitrinite reflectance (%Rr) above 0.5 suggesting an equilibrium from the start of the oil window. Dehydroicetexanes are more stable than dehydroabietane and some oils, rich in dehydroicetexanes, contain no dehydroabietane. Precursors could be plant diterpenoids having the icetexane structure, which have been known for more than 40 years and isolated from a variety of higher plant sources, including some angiosperms. Many of the relatively simple icetexanes were isolated for the first time from Chamaecyparis pisifera and related species where they seem to be particularly abundant, suggesting that dehydroicetaxanes may be used as markers for the genus Chamaecyparis or for Cupressoideae in general.
PB  - Elsevier
T2  - Organic Geochemistry
T1  - Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae
DO  - 10.1016/j.orggeochem.2019.01.001
ER  - 
@article{
author = "Nytoft, Hans Peter and Kildahl-Andersen, Geir and Lindström, Sofie and Rise, Frode and Bechtel, Achim and Mitrović, Danica D. and Đoković, Nataša and Životić, Dragana R. and Stojanović, Ksenija A.",
year = "2019",
abstract = "Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian
lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using
NMR-spectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10→20)-abeo-abietane or
icetexane skeleton consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of
the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270 → 146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant in high latitude coals and mudstones ranging fromTriassic to Miocene, and in high latitude oils (Canada and Greenland) sourced from terrigenous organic matter. The trans/(cis+ trans) dehydroicetexane ratio is low in immature sediments, but usually around 0.83 in oils and mature sediments with vitrinite reflectance (%Rr) above 0.5 suggesting an equilibrium from the start of the oil window. Dehydroicetexanes are more stable than dehydroabietane and some oils, rich in dehydroicetexanes, contain no dehydroabietane. Precursors could be plant diterpenoids having the icetexane structure, which have been known for more than 40 years and isolated from a variety of higher plant sources, including some angiosperms. Many of the relatively simple icetexanes were isolated for the first time from Chamaecyparis pisifera and related species where they seem to be particularly abundant, suggesting that dehydroicetaxanes may be used as markers for the genus Chamaecyparis or for Cupressoideae in general.",
publisher = "Elsevier",
journal = "Organic Geochemistry",
title = "Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae",
doi = "10.1016/j.orggeochem.2019.01.001"
}
Nytoft, H. P., Kildahl-Andersen, G., Lindström, S., Rise, F., Bechtel, A., Mitrović, D. D., Đoković, N., Životić, D. R.,& Stojanović, K. A.. (2019). Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae. in Organic Geochemistry
Elsevier..
https://doi.org/10.1016/j.orggeochem.2019.01.001
Nytoft HP, Kildahl-Andersen G, Lindström S, Rise F, Bechtel A, Mitrović DD, Đoković N, Životić DR, Stojanović KA. Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae. in Organic Geochemistry. 2019;.
doi:10.1016/j.orggeochem.2019.01.001 .
Nytoft, Hans Peter, Kildahl-Andersen, Geir, Lindström, Sofie, Rise, Frode, Bechtel, Achim, Mitrović, Danica D., Đoković, Nataša, Životić, Dragana R., Stojanović, Ksenija A., "Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae" in Organic Geochemistry (2019),
https://doi.org/10.1016/j.orggeochem.2019.01.001 . .
3
5
5
5

Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae

Nytoft, Hans Peter; Kildahl-Andersen, Geir; Lindström, Sofie; Rise, Frode; Bechtel, Achim; Mitrović, Danica D.; Đoković, Nataša; Životić, Dragana R.; Stojanović, Ksenija A.

(Elsevier, 2019)

TY  - JOUR
AU  - Nytoft, Hans Peter
AU  - Kildahl-Andersen, Geir
AU  - Lindström, Sofie
AU  - Rise, Frode
AU  - Bechtel, Achim
AU  - Mitrović, Danica D.
AU  - Đoković, Nataša
AU  - Životić, Dragana R.
AU  - Stojanović, Ksenija A.
PY  - 2019
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2846
AB  - Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMR-spectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10 → 20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270 → 146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant in high latitude coals and mudstones ranging from Triassic to Miocene, and in high latitude oils (Canada and Greenland) sourced from terrigenous organic matter. The trans/(cis + trans) dehydroicetexane ratio is low in immature sediments, but usually around 0.83 in oils and mature sediments with vitrinite reflectance (%R r ) above 0.5, suggesting an equilibrium from the start of the oil window. Dehydroicetexanes are more stable than dehydroabietane and some oils, rich in dehydroicetexanes, contain no dehydroabietane. Precursors could be plant diterpenoids having the icetexane structure, which have been known for more than 40 years and isolated from a variety of higher plant sources, including some angiosperms. Many of the relatively simple icetexanes were isolated for the first time from Chamaecyparis pisifera and related species where they seem to be particularly abundant, suggesting that dehydroicetexanes may be used as markers for the genus Chamaecyparis or for Cupressoideae in general.
PB  - Elsevier
T2  - Organic Geochemistry
T1  - Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae
VL  - 129
SP  - 14
EP  - 23
DO  - 10.1016/j.orggeochem.2019.01.001
ER  - 
@article{
author = "Nytoft, Hans Peter and Kildahl-Andersen, Geir and Lindström, Sofie and Rise, Frode and Bechtel, Achim and Mitrović, Danica D. and Đoković, Nataša and Životić, Dragana R. and Stojanović, Ksenija A.",
year = "2019",
abstract = "Two previously unidentified dehydroabietane isomers were isolated from Miocene Serbian lignite and Rhaetian (Late Triassic) coaly mudstones from South Sweden and characterized using NMR-spectroscopy as cis- and trans-dehydroicetexane. Both have a 9(10 → 20)-abeo-abietane or icetexane skeleton, consisting of a 6-7-6 tricyclic framework with seven carbons in ring B instead of the usual six in common diterpanes of the abietane-type. Dehydroicetexanes can be detected using GC-MS-MS in m/z 270 → 146 chromatograms without interference from dehydroabietane or other isomers. Dehydroicetexanes are often abundant in high latitude coals and mudstones ranging from Triassic to Miocene, and in high latitude oils (Canada and Greenland) sourced from terrigenous organic matter. The trans/(cis + trans) dehydroicetexane ratio is low in immature sediments, but usually around 0.83 in oils and mature sediments with vitrinite reflectance (%R r ) above 0.5, suggesting an equilibrium from the start of the oil window. Dehydroicetexanes are more stable than dehydroabietane and some oils, rich in dehydroicetexanes, contain no dehydroabietane. Precursors could be plant diterpenoids having the icetexane structure, which have been known for more than 40 years and isolated from a variety of higher plant sources, including some angiosperms. Many of the relatively simple icetexanes were isolated for the first time from Chamaecyparis pisifera and related species where they seem to be particularly abundant, suggesting that dehydroicetexanes may be used as markers for the genus Chamaecyparis or for Cupressoideae in general.",
publisher = "Elsevier",
journal = "Organic Geochemistry",
title = "Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae",
volume = "129",
pages = "14-23",
doi = "10.1016/j.orggeochem.2019.01.001"
}
Nytoft, H. P., Kildahl-Andersen, G., Lindström, S., Rise, F., Bechtel, A., Mitrović, D. D., Đoković, N., Životić, D. R.,& Stojanović, K. A.. (2019). Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae. in Organic Geochemistry
Elsevier., 129, 14-23.
https://doi.org/10.1016/j.orggeochem.2019.01.001
Nytoft HP, Kildahl-Andersen G, Lindström S, Rise F, Bechtel A, Mitrović DD, Đoković N, Životić DR, Stojanović KA. Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae. in Organic Geochemistry. 2019;129:14-23.
doi:10.1016/j.orggeochem.2019.01.001 .
Nytoft, Hans Peter, Kildahl-Andersen, Geir, Lindström, Sofie, Rise, Frode, Bechtel, Achim, Mitrović, Danica D., Đoković, Nataša, Životić, Dragana R., Stojanović, Ksenija A., "Dehydroicetexanes in sediments and crude oils: Possible markers for Cupressoideae" in Organic Geochemistry, 129 (2019):14-23,
https://doi.org/10.1016/j.orggeochem.2019.01.001 . .
3
5
5
5

A comprehensive study of conditions of the biodegradation of a plastic additive 2,6-di-: Tert -butylphenol and proteomic changes in the degrader Pseudomonas aeruginosa san ai

Medić, Ana; Stojanović, Ksenija A.; Izrael-Živković, Lidija; Beškoski, Vladimir; Lončarević, Branka D.; Kazazić, Saša; Karadžić, Ivanka M.

(2019)

TY  - JOUR
AU  - Medić, Ana
AU  - Stojanović, Ksenija A.
AU  - Izrael-Živković, Lidija
AU  - Beškoski, Vladimir
AU  - Lončarević, Branka D.
AU  - Kazazić, Saša
AU  - Karadžić, Ivanka M.
PY  - 2019
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3346
AB  - The Pseudomonas aeruginosa san ai strain was investigated for its capability to degrade the 2,6-di-tert-butylphenol (2,6-DTBP) plastic additive, a hazardous and toxic substance for aquatic life. This investigation was performed under different parameter values: 2,6-DTBP concentration, inoculum size, pH, and temperature. The GC-MS study showed that P. aeruginosa efficiently degraded 2,6-DTBP in the pH range of 5-8 at higher temperatures. Under exposure to 2,6-DTBP concentrations of 2, 10, and 100 mg L-1, the strain degraded by 100, 100, and 85%, respectively, for 7 days. Crude enzyme preparation from the biomass of P. aeruginosa san ai showed higher efficiency in 2,6-DTBP removal than that shown by whole microbial cells. Gene encoding for the enzymes involved in the degradation of aromatic compounds in P. aeruginosa san ai was identified. To complement the genomic data, a comparative proteomic study of P. aeruginosa san ai grown on 2,6-DTBP or sunflower oil was conducted by means of nanoLC-MS/MS. The presence of aromatic substances resulted in the upregulation of aromatic ring cleavage enzymes, whose activity was confirmed by enzymatic tests; therefore, it could be concluded that 2,6-DTBP might be degraded by ortho-ring cleavage. A comparative proteomics study of P. aeruginosa san ai indicated that the core molecular responses to aromatic substances can be summarized as the upregulation of proteins responsible for amino acid metabolism with emphasized glutamate metabolism and energy production with upregulated enzymes of glyoxylate bypass. P. aeruginosa san ai has a high capacity to efficiently degrade aromatic compounds, and therefore its whole cells or enzymes could be used in the treatment of contaminated areas.
T2  - RSC Advances
T1  - A comprehensive study of conditions of the biodegradation of a plastic additive 2,6-di-: Tert -butylphenol and proteomic changes in the degrader Pseudomonas aeruginosa san ai
VL  - 9
IS  - 41
SP  - 23696
EP  - 23710
DO  - 10.1039/C9RA04298A
ER  - 
@article{
author = "Medić, Ana and Stojanović, Ksenija A. and Izrael-Živković, Lidija and Beškoski, Vladimir and Lončarević, Branka D. and Kazazić, Saša and Karadžić, Ivanka M.",
year = "2019",
abstract = "The Pseudomonas aeruginosa san ai strain was investigated for its capability to degrade the 2,6-di-tert-butylphenol (2,6-DTBP) plastic additive, a hazardous and toxic substance for aquatic life. This investigation was performed under different parameter values: 2,6-DTBP concentration, inoculum size, pH, and temperature. The GC-MS study showed that P. aeruginosa efficiently degraded 2,6-DTBP in the pH range of 5-8 at higher temperatures. Under exposure to 2,6-DTBP concentrations of 2, 10, and 100 mg L-1, the strain degraded by 100, 100, and 85%, respectively, for 7 days. Crude enzyme preparation from the biomass of P. aeruginosa san ai showed higher efficiency in 2,6-DTBP removal than that shown by whole microbial cells. Gene encoding for the enzymes involved in the degradation of aromatic compounds in P. aeruginosa san ai was identified. To complement the genomic data, a comparative proteomic study of P. aeruginosa san ai grown on 2,6-DTBP or sunflower oil was conducted by means of nanoLC-MS/MS. The presence of aromatic substances resulted in the upregulation of aromatic ring cleavage enzymes, whose activity was confirmed by enzymatic tests; therefore, it could be concluded that 2,6-DTBP might be degraded by ortho-ring cleavage. A comparative proteomics study of P. aeruginosa san ai indicated that the core molecular responses to aromatic substances can be summarized as the upregulation of proteins responsible for amino acid metabolism with emphasized glutamate metabolism and energy production with upregulated enzymes of glyoxylate bypass. P. aeruginosa san ai has a high capacity to efficiently degrade aromatic compounds, and therefore its whole cells or enzymes could be used in the treatment of contaminated areas.",
journal = "RSC Advances",
title = "A comprehensive study of conditions of the biodegradation of a plastic additive 2,6-di-: Tert -butylphenol and proteomic changes in the degrader Pseudomonas aeruginosa san ai",
volume = "9",
number = "41",
pages = "23696-23710",
doi = "10.1039/C9RA04298A"
}
Medić, A., Stojanović, K. A., Izrael-Živković, L., Beškoski, V., Lončarević, B. D., Kazazić, S.,& Karadžić, I. M.. (2019). A comprehensive study of conditions of the biodegradation of a plastic additive 2,6-di-: Tert -butylphenol and proteomic changes in the degrader Pseudomonas aeruginosa san ai. in RSC Advances, 9(41), 23696-23710.
https://doi.org/10.1039/C9RA04298A
Medić A, Stojanović KA, Izrael-Živković L, Beškoski V, Lončarević BD, Kazazić S, Karadžić IM. A comprehensive study of conditions of the biodegradation of a plastic additive 2,6-di-: Tert -butylphenol and proteomic changes in the degrader Pseudomonas aeruginosa san ai. in RSC Advances. 2019;9(41):23696-23710.
doi:10.1039/C9RA04298A .
Medić, Ana, Stojanović, Ksenija A., Izrael-Živković, Lidija, Beškoski, Vladimir, Lončarević, Branka D., Kazazić, Saša, Karadžić, Ivanka M., "A comprehensive study of conditions of the biodegradation of a plastic additive 2,6-di-: Tert -butylphenol and proteomic changes in the degrader Pseudomonas aeruginosa san ai" in RSC Advances, 9, no. 41 (2019):23696-23710,
https://doi.org/10.1039/C9RA04298A . .
6
5
5

Supplementary data for the article: Medić, A.; Stojanović, K.; Izrael-Živković, L.; Beškoski, V.; Lončarević, B.; Kazazić, S.; Karadžić, I. A Comprehensive Study of Conditions of the Biodegradation of a Plastic Additive 2,6-Di-: Tert -Butylphenol and Proteomic Changes in the Degrader Pseudomonas Aeruginosa San Ai. RSC Advances 2019, 9 (41), 23696–23710. https://doi.org/10.1039/c9ra04298a

Medić, Ana; Stojanović, Ksenija A.; Izrael-Živković, Lidija; Beškoski, Vladimir; Lončarević, Branka D.; Kazazić, Saša; Karadžić, Ivanka M.

(2019)

TY  - DATA
AU  - Medić, Ana
AU  - Stojanović, Ksenija A.
AU  - Izrael-Živković, Lidija
AU  - Beškoski, Vladimir
AU  - Lončarević, Branka D.
AU  - Kazazić, Saša
AU  - Karadžić, Ivanka M.
PY  - 2019
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3347
T2  - RSC Advances
T1  - Supplementary data for the article: Medić, A.; Stojanović, K.; Izrael-Živković, L.; Beškoski, V.; Lončarević, B.; Kazazić, S.; Karadžić, I. A Comprehensive Study of Conditions of the Biodegradation of a Plastic Additive 2,6-Di-: Tert -Butylphenol and Proteomic Changes in the Degrader Pseudomonas Aeruginosa San Ai. RSC Advances 2019, 9 (41), 23696–23710. https://doi.org/10.1039/c9ra04298a
ER  - 
@misc{
author = "Medić, Ana and Stojanović, Ksenija A. and Izrael-Živković, Lidija and Beškoski, Vladimir and Lončarević, Branka D. and Kazazić, Saša and Karadžić, Ivanka M.",
year = "2019",
journal = "RSC Advances",
title = "Supplementary data for the article: Medić, A.; Stojanović, K.; Izrael-Živković, L.; Beškoski, V.; Lončarević, B.; Kazazić, S.; Karadžić, I. A Comprehensive Study of Conditions of the Biodegradation of a Plastic Additive 2,6-Di-: Tert -Butylphenol and Proteomic Changes in the Degrader Pseudomonas Aeruginosa San Ai. RSC Advances 2019, 9 (41), 23696–23710. https://doi.org/10.1039/c9ra04298a"
}
Medić, A., Stojanović, K. A., Izrael-Živković, L., Beškoski, V., Lončarević, B. D., Kazazić, S.,& Karadžić, I. M.. (2019). Supplementary data for the article: Medić, A.; Stojanović, K.; Izrael-Živković, L.; Beškoski, V.; Lončarević, B.; Kazazić, S.; Karadžić, I. A Comprehensive Study of Conditions of the Biodegradation of a Plastic Additive 2,6-Di-: Tert -Butylphenol and Proteomic Changes in the Degrader Pseudomonas Aeruginosa San Ai. RSC Advances 2019, 9 (41), 23696–23710. https://doi.org/10.1039/c9ra04298a. in RSC Advances.
Medić A, Stojanović KA, Izrael-Živković L, Beškoski V, Lončarević BD, Kazazić S, Karadžić IM. Supplementary data for the article: Medić, A.; Stojanović, K.; Izrael-Živković, L.; Beškoski, V.; Lončarević, B.; Kazazić, S.; Karadžić, I. A Comprehensive Study of Conditions of the Biodegradation of a Plastic Additive 2,6-Di-: Tert -Butylphenol and Proteomic Changes in the Degrader Pseudomonas Aeruginosa San Ai. RSC Advances 2019, 9 (41), 23696–23710. https://doi.org/10.1039/c9ra04298a. in RSC Advances. 2019;..
Medić, Ana, Stojanović, Ksenija A., Izrael-Živković, Lidija, Beškoski, Vladimir, Lončarević, Branka D., Kazazić, Saša, Karadžić, Ivanka M., "Supplementary data for the article: Medić, A.; Stojanović, K.; Izrael-Živković, L.; Beškoski, V.; Lončarević, B.; Kazazić, S.; Karadžić, I. A Comprehensive Study of Conditions of the Biodegradation of a Plastic Additive 2,6-Di-: Tert -Butylphenol and Proteomic Changes in the Degrader Pseudomonas Aeruginosa San Ai. RSC Advances 2019, 9 (41), 23696–23710. https://doi.org/10.1039/c9ra04298a" in RSC Advances (2019).

Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia

Pantović Spajić, Katarina; Sakan, Sanja M.; Đorđević, Dragana S.; Šoštarić, Tatjana D.; Lopičić, Zorica; Janićijević, Aleksandra; Stojanović, Ksenija A.

(2019)

TY  - JOUR
AU  - Pantović Spajić, Katarina
AU  - Sakan, Sanja M.
AU  - Đorđević, Dragana S.
AU  - Šoštarić, Tatjana D.
AU  - Lopičić, Zorica
AU  - Janićijević, Aleksandra
AU  - Stojanović, Ksenija A.
PY  - 2019
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3854
AB  - The purpose of this paper was to investigate the effectiveness of three different extraction agents for the extraction of 25 elements from sediment samples collected from 4 artificial lakes and 12 rivers in Serbia (33 samples in total). The extraction efficiency of the agents was evaluated by its ability to extract the highest quantity of the elements. For that purpose, three acids (1M HCl, 2M HNO3 and 0.43M CH3COOH) have been used. Inductively coupled plasma atomic emission spectrometry (ICP-OES) was used for quantitative determination of following elements: Al, As, B, Ba, Be, Bi, Ca, Cd, Cr, Co, Cu, Fe, Hg, K, Li, Mg, Mn, Ni, Na, Pb, Sb, Se, Sr, V, and Zn. The extraction with 1M HCl has shown the best results for the majority of investigated elements (especially Sr, Mn and Ca). Antimony (Sb) was detected only after extraction with 0.43M CH3COOOH, while selenium (Se) could not be detected when 2M HNO3 was applied as extraction agents. The present study could be very useful for choosing a suitable method for specific elements and also can be helpful in the evaluation of the contaminants in freshwater sediments in Serbia. This might contribute to environmental risk assessment of the present elements.
T2  - Acta Periodica Technologica
T1  - Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia
VL  - 50
SP  - 189
EP  - 196
DO  - 10.2298/APT1950189P
ER  - 
@article{
author = "Pantović Spajić, Katarina and Sakan, Sanja M. and Đorđević, Dragana S. and Šoštarić, Tatjana D. and Lopičić, Zorica and Janićijević, Aleksandra and Stojanović, Ksenija A.",
year = "2019",
abstract = "The purpose of this paper was to investigate the effectiveness of three different extraction agents for the extraction of 25 elements from sediment samples collected from 4 artificial lakes and 12 rivers in Serbia (33 samples in total). The extraction efficiency of the agents was evaluated by its ability to extract the highest quantity of the elements. For that purpose, three acids (1M HCl, 2M HNO3 and 0.43M CH3COOH) have been used. Inductively coupled plasma atomic emission spectrometry (ICP-OES) was used for quantitative determination of following elements: Al, As, B, Ba, Be, Bi, Ca, Cd, Cr, Co, Cu, Fe, Hg, K, Li, Mg, Mn, Ni, Na, Pb, Sb, Se, Sr, V, and Zn. The extraction with 1M HCl has shown the best results for the majority of investigated elements (especially Sr, Mn and Ca). Antimony (Sb) was detected only after extraction with 0.43M CH3COOOH, while selenium (Se) could not be detected when 2M HNO3 was applied as extraction agents. The present study could be very useful for choosing a suitable method for specific elements and also can be helpful in the evaluation of the contaminants in freshwater sediments in Serbia. This might contribute to environmental risk assessment of the present elements.",
journal = "Acta Periodica Technologica",
title = "Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia",
volume = "50",
pages = "189-196",
doi = "10.2298/APT1950189P"
}
Pantović Spajić, K., Sakan, S. M., Đorđević, D. S., Šoštarić, T. D., Lopičić, Z., Janićijević, A.,& Stojanović, K. A.. (2019). Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia. in Acta Periodica Technologica, 50, 189-196.
https://doi.org/10.2298/APT1950189P
Pantović Spajić K, Sakan SM, Đorđević DS, Šoštarić TD, Lopičić Z, Janićijević A, Stojanović KA. Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia. in Acta Periodica Technologica. 2019;50:189-196.
doi:10.2298/APT1950189P .
Pantović Spajić, Katarina, Sakan, Sanja M., Đorđević, Dragana S., Šoštarić, Tatjana D., Lopičić, Zorica, Janićijević, Aleksandra, Stojanović, Ksenija A., "Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia" in Acta Periodica Technologica, 50 (2019):189-196,
https://doi.org/10.2298/APT1950189P . .
1
1

Depositional environment and hydrocarbon source potential of the Lower Miocene oil shale deposit in the Aleksinac Basin (Serbia)

Bechtel, Achim; Oberauer, Klaus; Kostić, Aleksandar Ž.; Gratzer, Reinhard; Milisavljević, Vladimir; Aleksić, Nikoleta; Stojanović, Ksenija A.; Gross, Doris; Sachsenhofer, Reinhard F.

(Pergamon-Elsevier Science Ltd, Oxford, 2018)

TY  - JOUR
AU  - Bechtel, Achim
AU  - Oberauer, Klaus
AU  - Kostić, Aleksandar Ž.
AU  - Gratzer, Reinhard
AU  - Milisavljević, Vladimir
AU  - Aleksić, Nikoleta
AU  - Stojanović, Ksenija A.
AU  - Gross, Doris
AU  - Sachsenhofer, Reinhard F.
PY  - 2018
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2573
AB  - The most prolific oil shale deposit in Serbia is located in the Aleksinac Basin and is assigned to the Lower Miocene. Depositional environments and hydrocarbon potential were assessed for the Aleksinac oil shale and coal layers through bulk geochemical, organic petrographical, biomarker, and carbon isotope data from core samples from a single well. Maturity parameters (vitrinite reflectance, T-max, biomarker isomerisation ratios) prove that the organic matter (OM) is immature. A lower lacustrine oil shale sequence is comprised of alternating sandstone and clay-rich rocks and some thin coal beds, indicating strong variations in depositional environment. This stratum is covered with thick sandstone (50 m) terminated by the main 4 m thick coal seam that was deposited in a low-lying mire, as evidenced by high total sulfur and mineral matrix contents. The plant input was dominated by angiosperms. A relative rise in water level led to the drowning of the swamp and to the deposition of a 60 m thick upper oil shale in a lacustrine environment. The OM of the oil shale is dominated by kerogen Type I (lamalginite). Biomarker data suggest a stratified water column that likely formed due to differences in salinity. The stratified water column led to a strictly anoxic environment and photic zone euxinia in a mesosalinar, hydrologically closed lake, which enabled the accumulation of uncommonly high amounts of organic material (average TOC: 18.0 wt%) with excellent preservation (average HI: 743 mg HC/g TOC). (c) 2017 Elsevier Ltd. All rights reserved.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Organic Geochemistry
T1  - Depositional environment and hydrocarbon source potential of the Lower Miocene oil shale deposit in the Aleksinac Basin (Serbia)
VL  - 115
SP  - 93
EP  - 112
DO  - 10.1016/j.orggeochem.2017.10.009
UR  - Kon_3389
ER  - 
@article{
author = "Bechtel, Achim and Oberauer, Klaus and Kostić, Aleksandar Ž. and Gratzer, Reinhard and Milisavljević, Vladimir and Aleksić, Nikoleta and Stojanović, Ksenija A. and Gross, Doris and Sachsenhofer, Reinhard F.",
year = "2018",
abstract = "The most prolific oil shale deposit in Serbia is located in the Aleksinac Basin and is assigned to the Lower Miocene. Depositional environments and hydrocarbon potential were assessed for the Aleksinac oil shale and coal layers through bulk geochemical, organic petrographical, biomarker, and carbon isotope data from core samples from a single well. Maturity parameters (vitrinite reflectance, T-max, biomarker isomerisation ratios) prove that the organic matter (OM) is immature. A lower lacustrine oil shale sequence is comprised of alternating sandstone and clay-rich rocks and some thin coal beds, indicating strong variations in depositional environment. This stratum is covered with thick sandstone (50 m) terminated by the main 4 m thick coal seam that was deposited in a low-lying mire, as evidenced by high total sulfur and mineral matrix contents. The plant input was dominated by angiosperms. A relative rise in water level led to the drowning of the swamp and to the deposition of a 60 m thick upper oil shale in a lacustrine environment. The OM of the oil shale is dominated by kerogen Type I (lamalginite). Biomarker data suggest a stratified water column that likely formed due to differences in salinity. The stratified water column led to a strictly anoxic environment and photic zone euxinia in a mesosalinar, hydrologically closed lake, which enabled the accumulation of uncommonly high amounts of organic material (average TOC: 18.0 wt%) with excellent preservation (average HI: 743 mg HC/g TOC). (c) 2017 Elsevier Ltd. All rights reserved.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Organic Geochemistry",
title = "Depositional environment and hydrocarbon source potential of the Lower Miocene oil shale deposit in the Aleksinac Basin (Serbia)",
volume = "115",
pages = "93-112",
doi = "10.1016/j.orggeochem.2017.10.009",
url = "Kon_3389"
}
Bechtel, A., Oberauer, K., Kostić, A. Ž., Gratzer, R., Milisavljević, V., Aleksić, N., Stojanović, K. A., Gross, D.,& Sachsenhofer, R. F.. (2018). Depositional environment and hydrocarbon source potential of the Lower Miocene oil shale deposit in the Aleksinac Basin (Serbia). in Organic Geochemistry
Pergamon-Elsevier Science Ltd, Oxford., 115, 93-112.
https://doi.org/10.1016/j.orggeochem.2017.10.009
Kon_3389
Bechtel A, Oberauer K, Kostić AŽ, Gratzer R, Milisavljević V, Aleksić N, Stojanović KA, Gross D, Sachsenhofer RF. Depositional environment and hydrocarbon source potential of the Lower Miocene oil shale deposit in the Aleksinac Basin (Serbia). in Organic Geochemistry. 2018;115:93-112.
doi:10.1016/j.orggeochem.2017.10.009
Kon_3389 .
Bechtel, Achim, Oberauer, Klaus, Kostić, Aleksandar Ž., Gratzer, Reinhard, Milisavljević, Vladimir, Aleksić, Nikoleta, Stojanović, Ksenija A., Gross, Doris, Sachsenhofer, Reinhard F., "Depositional environment and hydrocarbon source potential of the Lower Miocene oil shale deposit in the Aleksinac Basin (Serbia)" in Organic Geochemistry, 115 (2018):93-112,
https://doi.org/10.1016/j.orggeochem.2017.10.009 .,
Kon_3389 .
11
11
11

Depositional environment and hydrocarbon source potential of the Lower Miocene oil shale deposit in the Aleksinac Basin (Serbia)

Bechtel, Achim; Oberauer, Klaus; Kostić, Aleksandar Ž.; Gratzer, Reinhard; Milisavljević, Vladimir; Aleksić, Nikoleta; Stojanović, Ksenija A.; Gross, Doris; Sachsenhofer, Reinhard F.

(Pergamon-Elsevier Science Ltd, Oxford, 2018)

TY  - JOUR
AU  - Bechtel, Achim
AU  - Oberauer, Klaus
AU  - Kostić, Aleksandar Ž.
AU  - Gratzer, Reinhard
AU  - Milisavljević, Vladimir
AU  - Aleksić, Nikoleta
AU  - Stojanović, Ksenija A.
AU  - Gross, Doris
AU  - Sachsenhofer, Reinhard F.
PY  - 2018
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3031
AB  - The most prolific oil shale deposit in Serbia is located in the Aleksinac Basin and is assigned to the Lower Miocene. Depositional environments and hydrocarbon potential were assessed for the Aleksinac oil shale and coal layers through bulk geochemical, organic petrographical, biomarker, and carbon isotope data from core samples from a single well. Maturity parameters (vitrinite reflectance, T-max, biomarker isomerisation ratios) prove that the organic matter (OM) is immature. A lower lacustrine oil shale sequence is comprised of alternating sandstone and clay-rich rocks and some thin coal beds, indicating strong variations in depositional environment. This stratum is covered with thick sandstone (50 m) terminated by the main 4 m thick coal seam that was deposited in a low-lying mire, as evidenced by high total sulfur and mineral matrix contents. The plant input was dominated by angiosperms. A relative rise in water level led to the drowning of the swamp and to the deposition of a 60 m thick upper oil shale in a lacustrine environment. The OM of the oil shale is dominated by kerogen Type I (lamalginite). Biomarker data suggest a stratified water column that likely formed due to differences in salinity. The stratified water column led to a strictly anoxic environment and photic zone euxinia in a mesosalinar, hydrologically closed lake, which enabled the accumulation of uncommonly high amounts of organic material (average TOC: 18.0 wt%) with excellent preservation (average HI: 743 mg HC/g TOC). (c) 2017 Elsevier Ltd. All rights reserved.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Organic Geochemistry
T1  - Depositional environment and hydrocarbon source potential of the Lower Miocene oil shale deposit in the Aleksinac Basin (Serbia)
VL  - 115
SP  - 93
EP  - 112
DO  - 10.1016/j.orggeochem.2017.10.009
UR  - Kon_3389
ER  - 
@article{
author = "Bechtel, Achim and Oberauer, Klaus and Kostić, Aleksandar Ž. and Gratzer, Reinhard and Milisavljević, Vladimir and Aleksić, Nikoleta and Stojanović, Ksenija A. and Gross, Doris and Sachsenhofer, Reinhard F.",
year = "2018",
abstract = "The most prolific oil shale deposit in Serbia is located in the Aleksinac Basin and is assigned to the Lower Miocene. Depositional environments and hydrocarbon potential were assessed for the Aleksinac oil shale and coal layers through bulk geochemical, organic petrographical, biomarker, and carbon isotope data from core samples from a single well. Maturity parameters (vitrinite reflectance, T-max, biomarker isomerisation ratios) prove that the organic matter (OM) is immature. A lower lacustrine oil shale sequence is comprised of alternating sandstone and clay-rich rocks and some thin coal beds, indicating strong variations in depositional environment. This stratum is covered with thick sandstone (50 m) terminated by the main 4 m thick coal seam that was deposited in a low-lying mire, as evidenced by high total sulfur and mineral matrix contents. The plant input was dominated by angiosperms. A relative rise in water level led to the drowning of the swamp and to the deposition of a 60 m thick upper oil shale in a lacustrine environment. The OM of the oil shale is dominated by kerogen Type I (lamalginite). Biomarker data suggest a stratified water column that likely formed due to differences in salinity. The stratified water column led to a strictly anoxic environment and photic zone euxinia in a mesosalinar, hydrologically closed lake, which enabled the accumulation of uncommonly high amounts of organic material (average TOC: 18.0 wt%) with excellent preservation (average HI: 743 mg HC/g TOC). (c) 2017 Elsevier Ltd. All rights reserved.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Organic Geochemistry",
title = "Depositional environment and hydrocarbon source potential of the Lower Miocene oil shale deposit in the Aleksinac Basin (Serbia)",
volume = "115",
pages = "93-112",
doi = "10.1016/j.orggeochem.2017.10.009",
url = "Kon_3389"
}
Bechtel, A., Oberauer, K., Kostić, A. Ž., Gratzer, R., Milisavljević, V., Aleksić, N., Stojanović, K. A., Gross, D.,& Sachsenhofer, R. F.. (2018). Depositional environment and hydrocarbon source potential of the Lower Miocene oil shale deposit in the Aleksinac Basin (Serbia). in Organic Geochemistry
Pergamon-Elsevier Science Ltd, Oxford., 115, 93-112.
https://doi.org/10.1016/j.orggeochem.2017.10.009
Kon_3389
Bechtel A, Oberauer K, Kostić AŽ, Gratzer R, Milisavljević V, Aleksić N, Stojanović KA, Gross D, Sachsenhofer RF. Depositional environment and hydrocarbon source potential of the Lower Miocene oil shale deposit in the Aleksinac Basin (Serbia). in Organic Geochemistry. 2018;115:93-112.
doi:10.1016/j.orggeochem.2017.10.009
Kon_3389 .
Bechtel, Achim, Oberauer, Klaus, Kostić, Aleksandar Ž., Gratzer, Reinhard, Milisavljević, Vladimir, Aleksić, Nikoleta, Stojanović, Ksenija A., Gross, Doris, Sachsenhofer, Reinhard F., "Depositional environment and hydrocarbon source potential of the Lower Miocene oil shale deposit in the Aleksinac Basin (Serbia)" in Organic Geochemistry, 115 (2018):93-112,
https://doi.org/10.1016/j.orggeochem.2017.10.009 .,
Kon_3389 .
11
11
11

Petrographical and organic geochemical study of the lignite from the Smederevsko Pomoravlje field (Kostolac Basin, Serbia)

Đoković, Nataša; Mitrović, Danica D.; Životić, Dragana R.; Bechtel, Achim; Sachsenhofer, Reinhard F.; Matic, Vesna; Glamocanin, Lidija; Stojanović, Ksenija A.

(Elsevier Science Bv, Amsterdam, 2018)

TY  - JOUR
AU  - Đoković, Nataša
AU  - Mitrović, Danica D.
AU  - Životić, Dragana R.
AU  - Bechtel, Achim
AU  - Sachsenhofer, Reinhard F.
AU  - Matic, Vesna
AU  - Glamocanin, Lidija
AU  - Stojanović, Ksenija A.
PY  - 2018
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2195
AB  - Three Upper Miocene (Pontian) lignite seams are present in the Smederevsko Pomoravlje field (Kostolac Basin, Serbia). The origin of their organic matter (OM), the characteristics of the depositional environment and certain utilisation properties have been evaluated based on petrographic data, bulk organic geochemical parameters, biomarker patterns and their isotope signatures. Moreover, results of isotopic analysis were used for the investigation of the influence of diagenetic aromatisation on delta C-13 signatures of biomarkers. The studied lignites are typical humic coals. The OM of lignites is derived from woody vegetation and herbaceous peat-forming plants, with a strong prevalence of the former. The peat-forming vegetation is dominated by decay resistant conifers, including gymnosperm families Cupressaceae, Taxodiaceae, and Pinaceae. Angiosperms occurred in lower amounts. Minor contribution of ferns, fungi and emergent aquatic macrophyta to the biomass is also evident. Chemoautotrophic- and heterotrophic bacteria played an import role during diagenesis. Diagenetic alterations, associated with change in the number of carbon atoms, influence delta C-13 ratios. Diagenetic aromatisation of di- and non-hopanoid triterpenoids is accompanied with C-13 depletion, whereas aromatisation of hopanoids displays the opposite trend. Peatification proceeded in a fresh water environment under variable, anoxic to slightly oxic redox conditions. The lowermost coal seam III accumulated in a topogenous fresh water peat mire with open water areas, which changed occasionally into a wet forest swamp. This resulted in the deposition of mineral-rich coal. The characteristics of lignite in coal seam II are similar to those of coal seam III. This is supported also by generally similar delta C-13 values of individual biomarkers. Coal seam I is dominated by xylite-rich coal, formed under mesotrophic to ombrotrophic conditions. Rapid flooding of the bogs stopped peat growth in all three coal seams. The ratios of ring-A-degraded and non-degraded aromatic diterpenoids and non-hopanoid triterpenoids, proposed in this study, as well as degree of aromatisation of these biomarkers, reflect changes in the water table. Calorific values of the samples indicate that they meet basic requirements for utilisation in the thermal power plants. None of the lignite samples is suitable for coal briquetting, whereas, based on petrographic data, lignite from coal seam I possesses certain potential for fluidized bed gasification.
PB  - Elsevier Science Bv, Amsterdam
T2  - International Journal of Coal Geology
T1  - Petrographical and organic geochemical study of the lignite from the Smederevsko Pomoravlje field (Kostolac Basin, Serbia)
VL  - 195
SP  - 139
EP  - 171
DO  - 10.1016/j.coal.2018.06.005
UR  - Kon_3526
ER  - 
@article{
author = "Đoković, Nataša and Mitrović, Danica D. and Životić, Dragana R. and Bechtel, Achim and Sachsenhofer, Reinhard F. and Matic, Vesna and Glamocanin, Lidija and Stojanović, Ksenija A.",
year = "2018",
abstract = "Three Upper Miocene (Pontian) lignite seams are present in the Smederevsko Pomoravlje field (Kostolac Basin, Serbia). The origin of their organic matter (OM), the characteristics of the depositional environment and certain utilisation properties have been evaluated based on petrographic data, bulk organic geochemical parameters, biomarker patterns and their isotope signatures. Moreover, results of isotopic analysis were used for the investigation of the influence of diagenetic aromatisation on delta C-13 signatures of biomarkers. The studied lignites are typical humic coals. The OM of lignites is derived from woody vegetation and herbaceous peat-forming plants, with a strong prevalence of the former. The peat-forming vegetation is dominated by decay resistant conifers, including gymnosperm families Cupressaceae, Taxodiaceae, and Pinaceae. Angiosperms occurred in lower amounts. Minor contribution of ferns, fungi and emergent aquatic macrophyta to the biomass is also evident. Chemoautotrophic- and heterotrophic bacteria played an import role during diagenesis. Diagenetic alterations, associated with change in the number of carbon atoms, influence delta C-13 ratios. Diagenetic aromatisation of di- and non-hopanoid triterpenoids is accompanied with C-13 depletion, whereas aromatisation of hopanoids displays the opposite trend. Peatification proceeded in a fresh water environment under variable, anoxic to slightly oxic redox conditions. The lowermost coal seam III accumulated in a topogenous fresh water peat mire with open water areas, which changed occasionally into a wet forest swamp. This resulted in the deposition of mineral-rich coal. The characteristics of lignite in coal seam II are similar to those of coal seam III. This is supported also by generally similar delta C-13 values of individual biomarkers. Coal seam I is dominated by xylite-rich coal, formed under mesotrophic to ombrotrophic conditions. Rapid flooding of the bogs stopped peat growth in all three coal seams. The ratios of ring-A-degraded and non-degraded aromatic diterpenoids and non-hopanoid triterpenoids, proposed in this study, as well as degree of aromatisation of these biomarkers, reflect changes in the water table. Calorific values of the samples indicate that they meet basic requirements for utilisation in the thermal power plants. None of the lignite samples is suitable for coal briquetting, whereas, based on petrographic data, lignite from coal seam I possesses certain potential for fluidized bed gasification.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "International Journal of Coal Geology",
title = "Petrographical and organic geochemical study of the lignite from the Smederevsko Pomoravlje field (Kostolac Basin, Serbia)",
volume = "195",
pages = "139-171",
doi = "10.1016/j.coal.2018.06.005",
url = "Kon_3526"
}
Đoković, N., Mitrović, D. D., Životić, D. R., Bechtel, A., Sachsenhofer, R. F., Matic, V., Glamocanin, L.,& Stojanović, K. A.. (2018). Petrographical and organic geochemical study of the lignite from the Smederevsko Pomoravlje field (Kostolac Basin, Serbia). in International Journal of Coal Geology
Elsevier Science Bv, Amsterdam., 195, 139-171.
https://doi.org/10.1016/j.coal.2018.06.005
Kon_3526
Đoković N, Mitrović DD, Životić DR, Bechtel A, Sachsenhofer RF, Matic V, Glamocanin L, Stojanović KA. Petrographical and organic geochemical study of the lignite from the Smederevsko Pomoravlje field (Kostolac Basin, Serbia). in International Journal of Coal Geology. 2018;195:139-171.
doi:10.1016/j.coal.2018.06.005
Kon_3526 .
Đoković, Nataša, Mitrović, Danica D., Životić, Dragana R., Bechtel, Achim, Sachsenhofer, Reinhard F., Matic, Vesna, Glamocanin, Lidija, Stojanović, Ksenija A., "Petrographical and organic geochemical study of the lignite from the Smederevsko Pomoravlje field (Kostolac Basin, Serbia)" in International Journal of Coal Geology, 195 (2018):139-171,
https://doi.org/10.1016/j.coal.2018.06.005 .,
Kon_3526 .
10
10
10

Study of pyrolysis of high density polyethylene in the open system and estimation of its capability for co-pyrolysis with lignite

Kojić, Ivan; Bechtel, Achim; Kittinger, Friedrich; Stevanović, Nikola R.; Obradović, Marko; Stojanović, Ksenija A.

(Serbian Chemical Soc, Belgrade, 2018)

TY  - JOUR
AU  - Kojić, Ivan
AU  - Bechtel, Achim
AU  - Kittinger, Friedrich
AU  - Stevanović, Nikola R.
AU  - Obradović, Marko
AU  - Stojanović, Ksenija A.
PY  - 2018
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2201
AB  - Pyrolysis of high density polyethylene (HDPE) in the open system was studied. A plastic bag for food packing was used as a source of HDPE. Pyrolysis was performed at temperatures of 400, 450 and 500 degrees C, which were chosen based on thermogravimetric analysis. The HDPE pyrolysis yielded liquid, gaseous and solid products. Temperature rise resulted in the increase of conversion of HDPE into liquid and gaseous products. The main constituents of liquid pyrolysates are 1-n-alkenes, n-alkanes and terminal n-dienes. The composition of liquid products indicates that the performed pyrolysis of HDPE could not serve as a standalone operation for the production of gasoline or diesel, but preferably as a pre-treatment to yield a product to be blended into a refinery or petrochemical feed stream. The advantage of a liquid pyrolysate in comparison to crude oil is the extremely low content of aromatic hydrocarbons and the absence of polar compounds. The gaseous products have desirable composition and consist mainly of methane and ethene. The solid residues do not produce ash by combustion and have high calorific values. Co-pyrolysis of HDPE with mineral-rich lignite indicated positive synergetic effect at 450 and 500 degrees C, which is reflected through the increased experimental yields of liquid and gaseous products in comparison to theoretical ones.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Study of pyrolysis of high density polyethylene in the open system and estimation of its capability for co-pyrolysis with lignite
VL  - 83
IS  - 7-8
SP  - 923
EP  - 940
DO  - 10.2298/JSC171215027K
UR  - Kon_3532
ER  - 
@article{
author = "Kojić, Ivan and Bechtel, Achim and Kittinger, Friedrich and Stevanović, Nikola R. and Obradović, Marko and Stojanović, Ksenija A.",
year = "2018",
abstract = "Pyrolysis of high density polyethylene (HDPE) in the open system was studied. A plastic bag for food packing was used as a source of HDPE. Pyrolysis was performed at temperatures of 400, 450 and 500 degrees C, which were chosen based on thermogravimetric analysis. The HDPE pyrolysis yielded liquid, gaseous and solid products. Temperature rise resulted in the increase of conversion of HDPE into liquid and gaseous products. The main constituents of liquid pyrolysates are 1-n-alkenes, n-alkanes and terminal n-dienes. The composition of liquid products indicates that the performed pyrolysis of HDPE could not serve as a standalone operation for the production of gasoline or diesel, but preferably as a pre-treatment to yield a product to be blended into a refinery or petrochemical feed stream. The advantage of a liquid pyrolysate in comparison to crude oil is the extremely low content of aromatic hydrocarbons and the absence of polar compounds. The gaseous products have desirable composition and consist mainly of methane and ethene. The solid residues do not produce ash by combustion and have high calorific values. Co-pyrolysis of HDPE with mineral-rich lignite indicated positive synergetic effect at 450 and 500 degrees C, which is reflected through the increased experimental yields of liquid and gaseous products in comparison to theoretical ones.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Study of pyrolysis of high density polyethylene in the open system and estimation of its capability for co-pyrolysis with lignite",
volume = "83",
number = "7-8",
pages = "923-940",
doi = "10.2298/JSC171215027K",
url = "Kon_3532"
}
Kojić, I., Bechtel, A., Kittinger, F., Stevanović, N. R., Obradović, M.,& Stojanović, K. A.. (2018). Study of pyrolysis of high density polyethylene in the open system and estimation of its capability for co-pyrolysis with lignite. in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 83(7-8), 923-940.
https://doi.org/10.2298/JSC171215027K
Kon_3532
Kojić I, Bechtel A, Kittinger F, Stevanović NR, Obradović M, Stojanović KA. Study of pyrolysis of high density polyethylene in the open system and estimation of its capability for co-pyrolysis with lignite. in Journal of the Serbian Chemical Society. 2018;83(7-8):923-940.
doi:10.2298/JSC171215027K
Kon_3532 .
Kojić, Ivan, Bechtel, Achim, Kittinger, Friedrich, Stevanović, Nikola R., Obradović, Marko, Stojanović, Ksenija A., "Study of pyrolysis of high density polyethylene in the open system and estimation of its capability for co-pyrolysis with lignite" in Journal of the Serbian Chemical Society, 83, no. 7-8 (2018):923-940,
https://doi.org/10.2298/JSC171215027K .,
Kon_3532 .
1
1
1

Supplementary data for the article: Kojic, I.; Bechtel, A.; Kittinger, F.; Stevanovic, N.; Obradovic, M.; Stojanovic, K. Study of Pyrolysis of High Density Polyethylene in the Open System and Estimation of Its Capability for Co-Pyrolysis with Lignite. J. Serb. Chem. Soc. 2018, 83 (7–8), 923–940. https://doi.org/10.2298/JSC171215027K

Kojić, Ivan; Bechtel, Achim; Kittinger, Friedrich; Stevanović, Nikola R.; Obradović, Marko; Stojanović, Ksenija A.

(Serbian Chemical Soc, Belgrade, 2018)

TY  - DATA
AU  - Kojić, Ivan
AU  - Bechtel, Achim
AU  - Kittinger, Friedrich
AU  - Stevanović, Nikola R.
AU  - Obradović, Marko
AU  - Stojanović, Ksenija A.
PY  - 2018
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3306
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Supplementary data for the article: Kojic, I.; Bechtel, A.; Kittinger, F.; Stevanovic, N.; Obradovic, M.; Stojanovic, K. Study of Pyrolysis of High Density Polyethylene in the Open System and Estimation of Its Capability for Co-Pyrolysis with Lignite. J. Serb. Chem. Soc. 2018, 83 (7–8), 923–940. https://doi.org/10.2298/JSC171215027K
ER  - 
@misc{
author = "Kojić, Ivan and Bechtel, Achim and Kittinger, Friedrich and Stevanović, Nikola R. and Obradović, Marko and Stojanović, Ksenija A.",
year = "2018",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Supplementary data for the article: Kojic, I.; Bechtel, A.; Kittinger, F.; Stevanovic, N.; Obradovic, M.; Stojanovic, K. Study of Pyrolysis of High Density Polyethylene in the Open System and Estimation of Its Capability for Co-Pyrolysis with Lignite. J. Serb. Chem. Soc. 2018, 83 (7–8), 923–940. https://doi.org/10.2298/JSC171215027K"
}
Kojić, I., Bechtel, A., Kittinger, F., Stevanović, N. R., Obradović, M.,& Stojanović, K. A.. (2018). Supplementary data for the article: Kojic, I.; Bechtel, A.; Kittinger, F.; Stevanovic, N.; Obradovic, M.; Stojanovic, K. Study of Pyrolysis of High Density Polyethylene in the Open System and Estimation of Its Capability for Co-Pyrolysis with Lignite. J. Serb. Chem. Soc. 2018, 83 (7–8), 923–940. https://doi.org/10.2298/JSC171215027K. in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade..
Kojić I, Bechtel A, Kittinger F, Stevanović NR, Obradović M, Stojanović KA. Supplementary data for the article: Kojic, I.; Bechtel, A.; Kittinger, F.; Stevanovic, N.; Obradovic, M.; Stojanovic, K. Study of Pyrolysis of High Density Polyethylene in the Open System and Estimation of Its Capability for Co-Pyrolysis with Lignite. J. Serb. Chem. Soc. 2018, 83 (7–8), 923–940. https://doi.org/10.2298/JSC171215027K. in Journal of the Serbian Chemical Society. 2018;..
Kojić, Ivan, Bechtel, Achim, Kittinger, Friedrich, Stevanović, Nikola R., Obradović, Marko, Stojanović, Ksenija A., "Supplementary data for the article: Kojic, I.; Bechtel, A.; Kittinger, F.; Stevanovic, N.; Obradovic, M.; Stojanovic, K. Study of Pyrolysis of High Density Polyethylene in the Open System and Estimation of Its Capability for Co-Pyrolysis with Lignite. J. Serb. Chem. Soc. 2018, 83 (7–8), 923–940. https://doi.org/10.2298/JSC171215027K" in Journal of the Serbian Chemical Society (2018).

Petrographic and biomarker analysis of xylite-rich coal from the Kolubara and Kostolac lignite basins (Pannonian Basin, Serbia)

Đoković, Nataša; Mitrović, Danica D.; Životić, Dragana R.; Bechtel, Achim; Sachsenhofer, Reinhard F.; Stojanović, Ksenija A.

(Slovak Acad Sciences Geological Inst, Bratislava, 2018)

TY  - JOUR
AU  - Đoković, Nataša
AU  - Mitrović, Danica D.
AU  - Životić, Dragana R.
AU  - Bechtel, Achim
AU  - Sachsenhofer, Reinhard F.
AU  - Stojanović, Ksenija A.
PY  - 2018
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2077
AB  - The maceral and biomarker characteristics of 4 sublithotypes of xylite-rich coal (SXCs), pale yellow, dark yellow, brown and black, originating from the Kolubara and Kostolac lignite basins were determined. Based on these results, differences in sources and changes of organic matter (OM) resulting in formation of 4 SXCs were established. Conifers (particularly Cupressaceae, Taxodiaceae and Pinacea) had a significant impact on the precursor OM of all SXCs. The contribution of gymnosperm vs. angiosperm vegetation decreased in order pale yellow SXC  gt  dark yellow SXC  gt  brown SXC  gt  black SXC. The distribution of non-hopanoid triterpenoids indicates that change of SXC colour from -yellow to black is associated with reduced input of angiosperm plants from the Betulacea family. Differences in hopane distribution, bitumen content, proportion of short-chain n-alkanes and degree of aromatization of di-and triterpenoids of pale yellow SXC are controlled by microbial communities which took part in the diagenetic alteration of OM. The content of total huminites increased from black to pale yellow SXC, whereas contents of total liptinite and inertinite macerals showed the opposite trend. SXCs differ according to textinite/ulminite ratio, which sharply decreased from pale yellow to black SXC, reflecting increase in gelification of woody tissue. Regarding the composition of liptinite macerals, the SXCs mostly differ according to resinite/liptodetrinite and resinite/suberinite ratios, which are higher in yellow than in brown and black SXC. This result along with values of TOC/N ratio and Carbon Preference Index indicate that the contribution of well preserved woody material, including lignin tissue vs. the impact of epicuticular waxes decreased from yellow to black SXC.
PB  - Slovak Acad Sciences Geological  Inst, Bratislava
T2  - Geologica Carpathica
T1  - Petrographic and biomarker analysis of xylite-rich coal from the Kolubara and Kostolac lignite basins (Pannonian Basin, Serbia)
VL  - 69
IS  - 1
SP  - 51
EP  - 70
DO  - 10.1515/geoca-2018-0004
UR  - Kon_3408
ER  - 
@article{
author = "Đoković, Nataša and Mitrović, Danica D. and Životić, Dragana R. and Bechtel, Achim and Sachsenhofer, Reinhard F. and Stojanović, Ksenija A.",
year = "2018",
abstract = "The maceral and biomarker characteristics of 4 sublithotypes of xylite-rich coal (SXCs), pale yellow, dark yellow, brown and black, originating from the Kolubara and Kostolac lignite basins were determined. Based on these results, differences in sources and changes of organic matter (OM) resulting in formation of 4 SXCs were established. Conifers (particularly Cupressaceae, Taxodiaceae and Pinacea) had a significant impact on the precursor OM of all SXCs. The contribution of gymnosperm vs. angiosperm vegetation decreased in order pale yellow SXC  gt  dark yellow SXC  gt  brown SXC  gt  black SXC. The distribution of non-hopanoid triterpenoids indicates that change of SXC colour from -yellow to black is associated with reduced input of angiosperm plants from the Betulacea family. Differences in hopane distribution, bitumen content, proportion of short-chain n-alkanes and degree of aromatization of di-and triterpenoids of pale yellow SXC are controlled by microbial communities which took part in the diagenetic alteration of OM. The content of total huminites increased from black to pale yellow SXC, whereas contents of total liptinite and inertinite macerals showed the opposite trend. SXCs differ according to textinite/ulminite ratio, which sharply decreased from pale yellow to black SXC, reflecting increase in gelification of woody tissue. Regarding the composition of liptinite macerals, the SXCs mostly differ according to resinite/liptodetrinite and resinite/suberinite ratios, which are higher in yellow than in brown and black SXC. This result along with values of TOC/N ratio and Carbon Preference Index indicate that the contribution of well preserved woody material, including lignin tissue vs. the impact of epicuticular waxes decreased from yellow to black SXC.",
publisher = "Slovak Acad Sciences Geological  Inst, Bratislava",
journal = "Geologica Carpathica",
title = "Petrographic and biomarker analysis of xylite-rich coal from the Kolubara and Kostolac lignite basins (Pannonian Basin, Serbia)",
volume = "69",
number = "1",
pages = "51-70",
doi = "10.1515/geoca-2018-0004",
url = "Kon_3408"
}
Đoković, N., Mitrović, D. D., Životić, D. R., Bechtel, A., Sachsenhofer, R. F.,& Stojanović, K. A.. (2018). Petrographic and biomarker analysis of xylite-rich coal from the Kolubara and Kostolac lignite basins (Pannonian Basin, Serbia). in Geologica Carpathica
Slovak Acad Sciences Geological  Inst, Bratislava., 69(1), 51-70.
https://doi.org/10.1515/geoca-2018-0004
Kon_3408
Đoković N, Mitrović DD, Životić DR, Bechtel A, Sachsenhofer RF, Stojanović KA. Petrographic and biomarker analysis of xylite-rich coal from the Kolubara and Kostolac lignite basins (Pannonian Basin, Serbia). in Geologica Carpathica. 2018;69(1):51-70.
doi:10.1515/geoca-2018-0004
Kon_3408 .
Đoković, Nataša, Mitrović, Danica D., Životić, Dragana R., Bechtel, Achim, Sachsenhofer, Reinhard F., Stojanović, Ksenija A., "Petrographic and biomarker analysis of xylite-rich coal from the Kolubara and Kostolac lignite basins (Pannonian Basin, Serbia)" in Geologica Carpathica, 69, no. 1 (2018):51-70,
https://doi.org/10.1515/geoca-2018-0004 .,
Kon_3408 .
1
1

Organic Geochemical Study of the Upper Layer of Aleksinac Oil Shale in the Dubrava Block, Serbia

Gajica, Gordana; Šajnović, Aleksandra; Stojanović, Ksenija A.; Kostić, Aleksandar Ž.; Slipper, Ian; Antonijevic, Milan; Nytoft, Hans Peter; Jovančićević, Branimir

(Estonian Academy Publishers, Tallinn, 2017)

TY  - JOUR
AU  - Gajica, Gordana
AU  - Šajnović, Aleksandra
AU  - Stojanović, Ksenija A.
AU  - Kostić, Aleksandar Ž.
AU  - Slipper, Ian
AU  - Antonijevic, Milan
AU  - Nytoft, Hans Peter
AU  - Jovančićević, Branimir
PY  - 2017
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2522
AB  - A detailed evaluation of geochemical properties of oil shale samples,from the outcrops of the Lower Miocene upper layer in the Dubrava area, Aleksinac basin, Serbia, was performed. For that purpose X-ray diffraction (XRD) analysis, Rock Eval pyrolysis, gas chromatography-mass spectrometry (GC-MS) analysis of biomarkers and conventional pyrolysis in an autoclave were used. Most of the samples have similar mineral compositions with predominance of clay and feldspar minerals. Three samples are characterised by an elevated content of carbonates, and among them one sample has a notable prevalence of this mineral group. This sample also demonstrated certain differences in biomarker distribution. In most samples organic matter (OM) consists predominantly of type I and II kerogens, showing high oil generative potential, whereas three samples, which contain type II kerogen with a certain input of type III kerogen, demonstrated potential to produce both, oil and gas. The OM of all samples is immature and corresponds to the vitrinite reflectance of ca. 0.40%. Biomarker patterns along with Rock-Eval data indicated a strong contribution of aquatic organisms such as green and brown algae and bacteria with some influence of higher plants OM. The organic matter was deposited in a reducing lacustrine alkaline brackish to freshwater environment under warm climate conditions. Preservation of OM was governed by stratification of the water column rather than its height. Tectonic movements that caused the regional tilting of an investigated area and supported minor marine ingression and influx of fresh water played an important role in formation of the sediments. Conventional pyrolytic experiments confirmed that these sediments at the catagenetic stage could be a significant source of liquid hydrocarbons.
PB  - Estonian Academy Publishers, Tallinn
T2  - Oil Shale
T1  - Organic Geochemical Study of the Upper Layer of Aleksinac Oil Shale in the Dubrava Block, Serbia
VL  - 34
IS  - 3
SP  - 197
EP  - 218
DO  - 10.3176/oil.2017.3.01
UR  - Kon_3338
ER  - 
@article{
author = "Gajica, Gordana and Šajnović, Aleksandra and Stojanović, Ksenija A. and Kostić, Aleksandar Ž. and Slipper, Ian and Antonijevic, Milan and Nytoft, Hans Peter and Jovančićević, Branimir",
year = "2017",
abstract = "A detailed evaluation of geochemical properties of oil shale samples,from the outcrops of the Lower Miocene upper layer in the Dubrava area, Aleksinac basin, Serbia, was performed. For that purpose X-ray diffraction (XRD) analysis, Rock Eval pyrolysis, gas chromatography-mass spectrometry (GC-MS) analysis of biomarkers and conventional pyrolysis in an autoclave were used. Most of the samples have similar mineral compositions with predominance of clay and feldspar minerals. Three samples are characterised by an elevated content of carbonates, and among them one sample has a notable prevalence of this mineral group. This sample also demonstrated certain differences in biomarker distribution. In most samples organic matter (OM) consists predominantly of type I and II kerogens, showing high oil generative potential, whereas three samples, which contain type II kerogen with a certain input of type III kerogen, demonstrated potential to produce both, oil and gas. The OM of all samples is immature and corresponds to the vitrinite reflectance of ca. 0.40%. Biomarker patterns along with Rock-Eval data indicated a strong contribution of aquatic organisms such as green and brown algae and bacteria with some influence of higher plants OM. The organic matter was deposited in a reducing lacustrine alkaline brackish to freshwater environment under warm climate conditions. Preservation of OM was governed by stratification of the water column rather than its height. Tectonic movements that caused the regional tilting of an investigated area and supported minor marine ingression and influx of fresh water played an important role in formation of the sediments. Conventional pyrolytic experiments confirmed that these sediments at the catagenetic stage could be a significant source of liquid hydrocarbons.",
publisher = "Estonian Academy Publishers, Tallinn",
journal = "Oil Shale",
title = "Organic Geochemical Study of the Upper Layer of Aleksinac Oil Shale in the Dubrava Block, Serbia",
volume = "34",
number = "3",
pages = "197-218",
doi = "10.3176/oil.2017.3.01",
url = "Kon_3338"
}
Gajica, G., Šajnović, A., Stojanović, K. A., Kostić, A. Ž., Slipper, I., Antonijevic, M., Nytoft, H. P.,& Jovančićević, B.. (2017). Organic Geochemical Study of the Upper Layer of Aleksinac Oil Shale in the Dubrava Block, Serbia. in Oil Shale
Estonian Academy Publishers, Tallinn., 34(3), 197-218.
https://doi.org/10.3176/oil.2017.3.01
Kon_3338
Gajica G, Šajnović A, Stojanović KA, Kostić AŽ, Slipper I, Antonijevic M, Nytoft HP, Jovančićević B. Organic Geochemical Study of the Upper Layer of Aleksinac Oil Shale in the Dubrava Block, Serbia. in Oil Shale. 2017;34(3):197-218.
doi:10.3176/oil.2017.3.01
Kon_3338 .
Gajica, Gordana, Šajnović, Aleksandra, Stojanović, Ksenija A., Kostić, Aleksandar Ž., Slipper, Ian, Antonijevic, Milan, Nytoft, Hans Peter, Jovančićević, Branimir, "Organic Geochemical Study of the Upper Layer of Aleksinac Oil Shale in the Dubrava Block, Serbia" in Oil Shale, 34, no. 3 (2017):197-218,
https://doi.org/10.3176/oil.2017.3.01 .,
Kon_3338 .
1
1
1

Characterisation of lignite lithotypes from the "Kovin" deposit (Serbia) - Implications from petrographic, biomarker and isotopic analysis

Mitrović, Danica D.; Đoković, Nataša; Životić, Dragana R.; Bechtel, Achim; Cvetković, Olga; Stojanović, Ksenija A.

(Serbian Chemical Soc, Belgrade, 2017)

TY  - JOUR
AU  - Mitrović, Danica D.
AU  - Đoković, Nataša
AU  - Životić, Dragana R.
AU  - Bechtel, Achim
AU  - Cvetković, Olga
AU  - Stojanović, Ksenija A.
PY  - 2017
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2510
AB  - Four lignite lithotypes (matrix coal, xylite-rich coal, mixture of matrix and mineral-rich coal and mixture of matrix and xylite-rich coal), originating from the Kovin deposit, were investigated in detail. The paper was aimed to determine the main maceral, biomarker and isotopic (delta C-13) characteristics of investigated lithotypes. Based on these results the sources and depositional environment of organic matter in 4 lithotypes were established. These samples were also used as substrates for investigation of the influence of diagenetic alteration on delta C-13 signatures of biomarkers, as well as for assessment of the most convenient utilization for each lithotype. The investigated lithotypes differ in accordance with the composition of huminite macerals. Xylite-rich coal notably distinguishes from other lithotypes beacuse of the highest content of conifer resins vs. epicuticular waxes. The mixture of matrix and mineral-rich coal is characterised by the greatest contribution of algae and fungi and the most intense methanotrophic activity at the time of deposition. In all coal lithotypes diagenetic aromatisation influenced isotopic composition of individual biomarkers. Xylite-rich coal has the poorest grindability properties. However, this coal lithotype is the most suitable for fluidized bed gasification, whereas the mixture of matrix and mineral-rich coal has the lowest applicability for this process. The calorific value decreases in order: xylite-rich coal  gt  matrix coal  gt  mixture of matrix and xylite-rich coal  gt  mixture of matrix and mineral-rich coal. The increase of organic carbon content and calorific value is controlled by the increase of contribution of wood vegetation vs. herbaceous peat-forming plants, as well as by stability of water table during peatification.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Characterisation of lignite lithotypes from the "Kovin" deposit (Serbia) - Implications from petrographic, biomarker and isotopic analysis
VL  - 82
IS  - 6
SP  - 739
EP  - 754
DO  - 10.2298/JSC161122030M
UR  - Kon_3326
ER  - 
@article{
author = "Mitrović, Danica D. and Đoković, Nataša and Životić, Dragana R. and Bechtel, Achim and Cvetković, Olga and Stojanović, Ksenija A.",
year = "2017",
abstract = "Four lignite lithotypes (matrix coal, xylite-rich coal, mixture of matrix and mineral-rich coal and mixture of matrix and xylite-rich coal), originating from the Kovin deposit, were investigated in detail. The paper was aimed to determine the main maceral, biomarker and isotopic (delta C-13) characteristics of investigated lithotypes. Based on these results the sources and depositional environment of organic matter in 4 lithotypes were established. These samples were also used as substrates for investigation of the influence of diagenetic alteration on delta C-13 signatures of biomarkers, as well as for assessment of the most convenient utilization for each lithotype. The investigated lithotypes differ in accordance with the composition of huminite macerals. Xylite-rich coal notably distinguishes from other lithotypes beacuse of the highest content of conifer resins vs. epicuticular waxes. The mixture of matrix and mineral-rich coal is characterised by the greatest contribution of algae and fungi and the most intense methanotrophic activity at the time of deposition. In all coal lithotypes diagenetic aromatisation influenced isotopic composition of individual biomarkers. Xylite-rich coal has the poorest grindability properties. However, this coal lithotype is the most suitable for fluidized bed gasification, whereas the mixture of matrix and mineral-rich coal has the lowest applicability for this process. The calorific value decreases in order: xylite-rich coal  gt  matrix coal  gt  mixture of matrix and xylite-rich coal  gt  mixture of matrix and mineral-rich coal. The increase of organic carbon content and calorific value is controlled by the increase of contribution of wood vegetation vs. herbaceous peat-forming plants, as well as by stability of water table during peatification.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Characterisation of lignite lithotypes from the "Kovin" deposit (Serbia) - Implications from petrographic, biomarker and isotopic analysis",
volume = "82",
number = "6",
pages = "739-754",
doi = "10.2298/JSC161122030M",
url = "Kon_3326"
}
Mitrović, D. D., Đoković, N., Životić, D. R., Bechtel, A., Cvetković, O.,& Stojanović, K. A.. (2017). Characterisation of lignite lithotypes from the "Kovin" deposit (Serbia) - Implications from petrographic, biomarker and isotopic analysis. in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 82(6), 739-754.
https://doi.org/10.2298/JSC161122030M
Kon_3326
Mitrović DD, Đoković N, Životić DR, Bechtel A, Cvetković O, Stojanović KA. Characterisation of lignite lithotypes from the "Kovin" deposit (Serbia) - Implications from petrographic, biomarker and isotopic analysis. in Journal of the Serbian Chemical Society. 2017;82(6):739-754.
doi:10.2298/JSC161122030M
Kon_3326 .
Mitrović, Danica D., Đoković, Nataša, Životić, Dragana R., Bechtel, Achim, Cvetković, Olga, Stojanović, Ksenija A., "Characterisation of lignite lithotypes from the "Kovin" deposit (Serbia) - Implications from petrographic, biomarker and isotopic analysis" in Journal of the Serbian Chemical Society, 82, no. 6 (2017):739-754,
https://doi.org/10.2298/JSC161122030M .,
Kon_3326 .
5
7
6

GC-MS vs. GC-MS-MS analysis of pentacyclic terpanes in crude oils from Libya and Serbia - A comparison of two methods

Faraj, Musbah Abduljalil M.; Šolević-Knudsen, Tatjana; Stojanović, Ksenija A.; Pavlović-Ivković, Sonja; Nytoft, Hans Peter; Jovančićević, Branimir

(Serbian Chemical Soc, Belgrade, 2017)

TY  - JOUR
AU  - Faraj, Musbah Abduljalil M.
AU  - Šolević-Knudsen, Tatjana
AU  - Stojanović, Ksenija A.
AU  - Pavlović-Ivković, Sonja
AU  - Nytoft, Hans Peter
AU  - Jovančićević, Branimir
PY  - 2017
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2567
AB  - The values of parameters calculated from distribution and abundance of the selected pentacyclic terpanes in crude oils from Libya and Serbia, which were originally derived from gas chromatography-mass spectrometry (GC-MS) were compared with results of quantification based on gas chromatography-mass spectrometry-mass spectrometry (GC-MS-MS). The parameters analyzed are the most often used terpane source and maturity parameters, which were applied to a large sample set of 70 oils, originating from five oil fields. The aim of the paper was to investigate to which extent the measurements of the selected parameters by these two instrumental techniques agree and to determine the influence of differences between parameter values on geochemical interpretation. For that purpose two methods, concordance correlation coefficient and mean-difference plot were used. The obtained results indicate that calculation of C(27)18 alpha(H)-22,29,30-trisnorneohopane/(C(27)18 alpha(H)-22,29,30-trisnorneohopane +C(27)17 alpha(H)-22,29,30-trisnorhopane), C(29)18 alpha(H)-30-norneohopane/C(29)17 alpha(H) 21 beta(H)-30-norhopane and C(29)17 alpha(H)21 beta(H)-30-norhopane/ C(30)17 alpha(H)21 beta(H)-hopane ratios either by GC-MS or GC-MS-MS do not significantly influence interpretation. On the other hand, the determination of C(30)17 beta(H)21 alpha(H)-moretane/C(30)17 alpha(H)21 beta(H)-hopane ratio, gammacerane index and oleanane index by GC-MS vs. GC-MS-MS could notably affect interpretation. These differences can be explained by the co-elution and the peak overlapping in GC-MS but also by better separation, higher precision and better selectivity of the GC-MS-MS. Deviation of the almost all studied parameters from the line of equality was similar for the oils from the same oil field but some differences were observed for the oils from different oil fields. Therefore, when GC-MS-MS results are to be used in organic geochemical interpretations, a regional calibration of GC-MS vs. GC-MS-MS relationship for each petroleum system is highly recommended.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - GC-MS vs. GC-MS-MS analysis of pentacyclic terpanes in crude oils from Libya and Serbia - A comparison of two methods
VL  - 82
IS  - 11
SP  - 1315
EP  - 1331
DO  - 10.2298/JSC170419075A
UR  - Kon_3383
ER  - 
@article{
author = "Faraj, Musbah Abduljalil M. and Šolević-Knudsen, Tatjana and Stojanović, Ksenija A. and Pavlović-Ivković, Sonja and Nytoft, Hans Peter and Jovančićević, Branimir",
year = "2017",
abstract = "The values of parameters calculated from distribution and abundance of the selected pentacyclic terpanes in crude oils from Libya and Serbia, which were originally derived from gas chromatography-mass spectrometry (GC-MS) were compared with results of quantification based on gas chromatography-mass spectrometry-mass spectrometry (GC-MS-MS). The parameters analyzed are the most often used terpane source and maturity parameters, which were applied to a large sample set of 70 oils, originating from five oil fields. The aim of the paper was to investigate to which extent the measurements of the selected parameters by these two instrumental techniques agree and to determine the influence of differences between parameter values on geochemical interpretation. For that purpose two methods, concordance correlation coefficient and mean-difference plot were used. The obtained results indicate that calculation of C(27)18 alpha(H)-22,29,30-trisnorneohopane/(C(27)18 alpha(H)-22,29,30-trisnorneohopane +C(27)17 alpha(H)-22,29,30-trisnorhopane), C(29)18 alpha(H)-30-norneohopane/C(29)17 alpha(H) 21 beta(H)-30-norhopane and C(29)17 alpha(H)21 beta(H)-30-norhopane/ C(30)17 alpha(H)21 beta(H)-hopane ratios either by GC-MS or GC-MS-MS do not significantly influence interpretation. On the other hand, the determination of C(30)17 beta(H)21 alpha(H)-moretane/C(30)17 alpha(H)21 beta(H)-hopane ratio, gammacerane index and oleanane index by GC-MS vs. GC-MS-MS could notably affect interpretation. These differences can be explained by the co-elution and the peak overlapping in GC-MS but also by better separation, higher precision and better selectivity of the GC-MS-MS. Deviation of the almost all studied parameters from the line of equality was similar for the oils from the same oil field but some differences were observed for the oils from different oil fields. Therefore, when GC-MS-MS results are to be used in organic geochemical interpretations, a regional calibration of GC-MS vs. GC-MS-MS relationship for each petroleum system is highly recommended.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "GC-MS vs. GC-MS-MS analysis of pentacyclic terpanes in crude oils from Libya and Serbia - A comparison of two methods",
volume = "82",
number = "11",
pages = "1315-1331",
doi = "10.2298/JSC170419075A",
url = "Kon_3383"
}
Faraj, M. A. M., Šolević-Knudsen, T., Stojanović, K. A., Pavlović-Ivković, S., Nytoft, H. P.,& Jovančićević, B.. (2017). GC-MS vs. GC-MS-MS analysis of pentacyclic terpanes in crude oils from Libya and Serbia - A comparison of two methods. in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 82(11), 1315-1331.
https://doi.org/10.2298/JSC170419075A
Kon_3383
Faraj MAM, Šolević-Knudsen T, Stojanović KA, Pavlović-Ivković S, Nytoft HP, Jovančićević B. GC-MS vs. GC-MS-MS analysis of pentacyclic terpanes in crude oils from Libya and Serbia - A comparison of two methods. in Journal of the Serbian Chemical Society. 2017;82(11):1315-1331.
doi:10.2298/JSC170419075A
Kon_3383 .
Faraj, Musbah Abduljalil M., Šolević-Knudsen, Tatjana, Stojanović, Ksenija A., Pavlović-Ivković, Sonja, Nytoft, Hans Peter, Jovančićević, Branimir, "GC-MS vs. GC-MS-MS analysis of pentacyclic terpanes in crude oils from Libya and Serbia - A comparison of two methods" in Journal of the Serbian Chemical Society, 82, no. 11 (2017):1315-1331,
https://doi.org/10.2298/JSC170419075A .,
Kon_3383 .
1
2
3

The influence of pyrolysis type on shale oil generation and its composition (Upper layer of Aleksinac oil shale, Serbia)

Gajica, Gordana ; Šajnović, Aleksandra; Stojanović, Ksenija A.; Antonijevic, Milan D.; Aleksić, Nikoleta; Jovančićević, Branimir

(Serbian Chemical Soc, Belgrade, 2017)

TY  - JOUR
AU  - Gajica, Gordana 
AU  - Šajnović, Aleksandra
AU  - Stojanović, Ksenija A.
AU  - Antonijevic, Milan D.
AU  - Aleksić, Nikoleta
AU  - Jovančićević, Branimir
PY  - 2017
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2578
AB  - The influence of pyrolysis type on the shale oil generation and its composition was studied. Different methods such as Rock-Eval pyrolysis, thermogravimetric analysis (TGA) and pyrolysis in the open and closed systems were applied. Samples from the Upper layer of Aleksinac oil shale (Serbia) were used as a substrate and first time characterized in detail. The impact of kerogen content and type on the shale oil generation in different pyrolysis systems was also estimated. Majority of the analysed samples have total organic carbon content  gt 5 wt. % and contain oil prone kerogen types I and/or II. Therefore, they can be of particular interest for the pyrolytic processing. The thermal behaviour of analysed samples obtained by TGA is in agreement with Rock-Eval parameters. The pyrolysis of oil shale in the open system gives higher yield of shale oil than the pyrolysis in the closed system. The yield of hydrocarbons (HCs) in shale oil produced by the open pyrolysis system corresponds to an excellent source rock potential, while HCs yield from the closed system indicates a very good source rock potential. The kerogen content has a greater impact on the shale oil generation than kerogen type in the open pyrolysis system, while kerogen type plays a more important role on the generation of shale oil than the kerogen content in the closed system. The composition of the obtained shale oil showed certain undesirable features, due to the relatively high contents of olefinic HCs (open system) and polar compounds (closed system), which may require further treatment to be used.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - The influence of pyrolysis type on shale oil generation and its composition (Upper layer of Aleksinac oil shale, Serbia)
VL  - 82
IS  - 12
SP  - 1461
EP  - 1477
DO  - 10.2298/JSC170421064G
UR  - Kon_3394
ER  - 
@article{
author = "Gajica, Gordana  and Šajnović, Aleksandra and Stojanović, Ksenija A. and Antonijevic, Milan D. and Aleksić, Nikoleta and Jovančićević, Branimir",
year = "2017",
abstract = "The influence of pyrolysis type on the shale oil generation and its composition was studied. Different methods such as Rock-Eval pyrolysis, thermogravimetric analysis (TGA) and pyrolysis in the open and closed systems were applied. Samples from the Upper layer of Aleksinac oil shale (Serbia) were used as a substrate and first time characterized in detail. The impact of kerogen content and type on the shale oil generation in different pyrolysis systems was also estimated. Majority of the analysed samples have total organic carbon content  gt 5 wt. % and contain oil prone kerogen types I and/or II. Therefore, they can be of particular interest for the pyrolytic processing. The thermal behaviour of analysed samples obtained by TGA is in agreement with Rock-Eval parameters. The pyrolysis of oil shale in the open system gives higher yield of shale oil than the pyrolysis in the closed system. The yield of hydrocarbons (HCs) in shale oil produced by the open pyrolysis system corresponds to an excellent source rock potential, while HCs yield from the closed system indicates a very good source rock potential. The kerogen content has a greater impact on the shale oil generation than kerogen type in the open pyrolysis system, while kerogen type plays a more important role on the generation of shale oil than the kerogen content in the closed system. The composition of the obtained shale oil showed certain undesirable features, due to the relatively high contents of olefinic HCs (open system) and polar compounds (closed system), which may require further treatment to be used.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "The influence of pyrolysis type on shale oil generation and its composition (Upper layer of Aleksinac oil shale, Serbia)",
volume = "82",
number = "12",
pages = "1461-1477",
doi = "10.2298/JSC170421064G",
url = "Kon_3394"
}
Gajica, G., Šajnović, A., Stojanović, K. A., Antonijevic, M. D., Aleksić, N.,& Jovančićević, B.. (2017). The influence of pyrolysis type on shale oil generation and its composition (Upper layer of Aleksinac oil shale, Serbia). in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 82(12), 1461-1477.
https://doi.org/10.2298/JSC170421064G
Kon_3394
Gajica G, Šajnović A, Stojanović KA, Antonijevic MD, Aleksić N, Jovančićević B. The influence of pyrolysis type on shale oil generation and its composition (Upper layer of Aleksinac oil shale, Serbia). in Journal of the Serbian Chemical Society. 2017;82(12):1461-1477.
doi:10.2298/JSC170421064G
Kon_3394 .
Gajica, Gordana , Šajnović, Aleksandra, Stojanović, Ksenija A., Antonijevic, Milan D., Aleksić, Nikoleta, Jovančićević, Branimir, "The influence of pyrolysis type on shale oil generation and its composition (Upper layer of Aleksinac oil shale, Serbia)" in Journal of the Serbian Chemical Society, 82, no. 12 (2017):1461-1477,
https://doi.org/10.2298/JSC170421064G .,
Kon_3394 .
2
2
4

Identification of a Novel Series of Benzohopanes and Their Geochemical Significance

Nytoft, H. Peter; Vuković, Nikola S.; Kildahl-Andersen, Geir; Rise, Frode; Životić, Dragana R.; Stojanović, Ksenija A.

(Amer Chemical Soc, Washington, 2016)

TY  - JOUR
AU  - Nytoft, H. Peter
AU  - Vuković, Nikola S.
AU  - Kildahl-Andersen, Geir
AU  - Rise, Frode
AU  - Životić, Dragana R.
AU  - Stojanović, Ksenija A.
PY  - 2016
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2283
AB  - series of novel C-33-C-35 hexacyclic benzohopanes (C(33)b-C(35)b) were identified in 39 samples of coal extracts and 39 crude oils of different ages from all over the world. C(33)b and C(34)b homologues were isolated, and their structures were determined by nuclear magnetic resonance. The structure of C(35)b benzohopane was proposed based on the mass spectrum and its similarity with the mass spectra of structurally defined C(33)b and C(34)b homologues. The structures of the C(33)b-C(35)b hexacyclic benzohopanes are closely related to isohopanes; both groups are typical for terrestrial organic matter and can be useful in the correlation analysis. A possible pathway of formation of these novel benzohopanes and their hopanoid precursors with an additional branch in the aliphatic side chain is proposed. C(33)b-C(35)b hexacyclic benzohopanes are stable up to the maturity level corresponding to random vitrinite reflectance (Rr) of similar to 0.80%, which was demonstrated by analyzing the samples of different maturity and by the maturation simulation experiments: hydrous pyrolysis of two bituminous coals (Rr = 0.55 and 0.59%) and pyrolysis of an extracted bituminous coal (Rr = 0.56%) and its asphaltenes. This represents a confirmation that the formation of these novel benzohopanes is related to specific depositional conditions and microbial activity during diagenesis. Mature samples (Rr = 0.8%) and hydrous pyrolysate of the bituminous coals (Rr  lt  0.60%) obtained at 330 degrees C show a distinct distribution of benzohopanes in comparison to immature and moderately mature samples, which is characterized by a low abundance of the b series benzohopanes and the presence of regular and numerous other benzohopane isomers. The latter most likely represent isomers of regular and novel benzohopanes with different substitution patterns on the aromatic ring. This isomerization of alkyl groups attached to the aromatic ring, leading to the formation of thermodynamically more stable isomers, is a well-known maturation scenario so far reported in the series of alkylated naphthalenes, phenanthrenes, and dibenzothiophenes. Therefore, in the same way, a distribution of benzohopanes can indicate thermal maturity. In addition to the novel benzohopanes, three series (2 alpha, 2 beta, and 3 beta) of their methylated derivatives were identified in numerous samples. Finally, a novel C-35 heptacyclic benzohopane with an additional cyclopentane ring was also observed in the studied samples, and its structure was tentatively identified based on the mass spectrum. Opposite to the hexacyclic C(33)b-C(35)b benzohopanes, the formation of the C-35 heptacyclic benzohopane does not require a specific hopanoid precursor with two branches in the side chain. Therefore, this compound seems to have less geochemical significance than the new hexacyclic benzohopanes.
PB  - Amer Chemical Soc, Washington
T2  - Energy and Fuels
T1  - Identification of a Novel Series of Benzohopanes and Their Geochemical Significance
VL  - 30
IS  - 7
SP  - 5563
EP  - 5575
DO  - 10.1021/acs.energyfuels.6b00799
UR  - Kon_3099
ER  - 
@article{
author = "Nytoft, H. Peter and Vuković, Nikola S. and Kildahl-Andersen, Geir and Rise, Frode and Životić, Dragana R. and Stojanović, Ksenija A.",
year = "2016",
abstract = "series of novel C-33-C-35 hexacyclic benzohopanes (C(33)b-C(35)b) were identified in 39 samples of coal extracts and 39 crude oils of different ages from all over the world. C(33)b and C(34)b homologues were isolated, and their structures were determined by nuclear magnetic resonance. The structure of C(35)b benzohopane was proposed based on the mass spectrum and its similarity with the mass spectra of structurally defined C(33)b and C(34)b homologues. The structures of the C(33)b-C(35)b hexacyclic benzohopanes are closely related to isohopanes; both groups are typical for terrestrial organic matter and can be useful in the correlation analysis. A possible pathway of formation of these novel benzohopanes and their hopanoid precursors with an additional branch in the aliphatic side chain is proposed. C(33)b-C(35)b hexacyclic benzohopanes are stable up to the maturity level corresponding to random vitrinite reflectance (Rr) of similar to 0.80%, which was demonstrated by analyzing the samples of different maturity and by the maturation simulation experiments: hydrous pyrolysis of two bituminous coals (Rr = 0.55 and 0.59%) and pyrolysis of an extracted bituminous coal (Rr = 0.56%) and its asphaltenes. This represents a confirmation that the formation of these novel benzohopanes is related to specific depositional conditions and microbial activity during diagenesis. Mature samples (Rr = 0.8%) and hydrous pyrolysate of the bituminous coals (Rr  lt  0.60%) obtained at 330 degrees C show a distinct distribution of benzohopanes in comparison to immature and moderately mature samples, which is characterized by a low abundance of the b series benzohopanes and the presence of regular and numerous other benzohopane isomers. The latter most likely represent isomers of regular and novel benzohopanes with different substitution patterns on the aromatic ring. This isomerization of alkyl groups attached to the aromatic ring, leading to the formation of thermodynamically more stable isomers, is a well-known maturation scenario so far reported in the series of alkylated naphthalenes, phenanthrenes, and dibenzothiophenes. Therefore, in the same way, a distribution of benzohopanes can indicate thermal maturity. In addition to the novel benzohopanes, three series (2 alpha, 2 beta, and 3 beta) of their methylated derivatives were identified in numerous samples. Finally, a novel C-35 heptacyclic benzohopane with an additional cyclopentane ring was also observed in the studied samples, and its structure was tentatively identified based on the mass spectrum. Opposite to the hexacyclic C(33)b-C(35)b benzohopanes, the formation of the C-35 heptacyclic benzohopane does not require a specific hopanoid precursor with two branches in the side chain. Therefore, this compound seems to have less geochemical significance than the new hexacyclic benzohopanes.",
publisher = "Amer Chemical Soc, Washington",
journal = "Energy and Fuels",
title = "Identification of a Novel Series of Benzohopanes and Their Geochemical Significance",
volume = "30",
number = "7",
pages = "5563-5575",
doi = "10.1021/acs.energyfuels.6b00799",
url = "Kon_3099"
}
Nytoft, H. P., Vuković, N. S., Kildahl-Andersen, G., Rise, F., Životić, D. R.,& Stojanović, K. A.. (2016). Identification of a Novel Series of Benzohopanes and Their Geochemical Significance. in Energy and Fuels
Amer Chemical Soc, Washington., 30(7), 5563-5575.
https://doi.org/10.1021/acs.energyfuels.6b00799
Kon_3099
Nytoft HP, Vuković NS, Kildahl-Andersen G, Rise F, Životić DR, Stojanović KA. Identification of a Novel Series of Benzohopanes and Their Geochemical Significance. in Energy and Fuels. 2016;30(7):5563-5575.
doi:10.1021/acs.energyfuels.6b00799
Kon_3099 .
Nytoft, H. Peter, Vuković, Nikola S., Kildahl-Andersen, Geir, Rise, Frode, Životić, Dragana R., Stojanović, Ksenija A., "Identification of a Novel Series of Benzohopanes and Their Geochemical Significance" in Energy and Fuels, 30, no. 7 (2016):5563-5575,
https://doi.org/10.1021/acs.energyfuels.6b00799 .,
Kon_3099 .
1
9
9
9

Geochemical characterization of the hydrous pyrolysis products from a recent cyanobacteria-dominated microbial mat.

Franco, N.; Mendonca Filho, J. G.; Silva, T. F.; Stojanović, Ksenija A.; Fontana, L. F.; Carvalhal-Gomes, S. B. V.; Silva, F. S.; Furukawa, G. G.

(Univ Barcelona, Barcelona, 2016)

TY  - JOUR
AU  - Franco, N.
AU  - Mendonca Filho, J. G.
AU  - Silva, T. F.
AU  - Stojanović, Ksenija A.
AU  - Fontana, L. F.
AU  - Carvalhal-Gomes, S. B. V.
AU  - Silva, F. S.
AU  - Furukawa, G. G.
PY  - 2016
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2369
AB  - Hydrous pyrolysis experiments were performed on a recent microbial mat sample from Lagoa Vermelha, Brazil, to determine whether crude oil can be generated and expelled during artificial maturation of the Organic Matter (OM). The experiments were conducted at 280 degrees C, 330 degrees C and 350 degrees C during 20h. Two types of liquid pyrolysis products, assigned as free oil and bitumen, were isolated and analyzed. Free oil represents free organic phase released by hydrous pyrolysis, whereas bitumen was obtained by extraction from the solid pyrolysis residue with dichloromethane. Changes in the OM maturity were determined using Rock-Eval parameters and biomarker maturity ratios of original sample and pyrolysis products. Biomarker compositions of original sample extract and liquid pyrolysates were used for deteiniination of dominant bacterial source. The yields of free oil and bitumen showed that a microbial mat OM has a high liquid hydrocarbons generation potential. Rock-Eval maturity parameters, biopolymer and biomarker compositions indicate a significant increase of the OM maturity during hydrous pyrolysis. At 280 degrees C the release of free, adsorbed and occluded compounds was observed; however, without a cracking of the OM. At 330 degrees C the generation of bitumen and free oil is mostly related to the OM cracking. The highest yield of free oil was recorded at this temperature. Distribution of biomarkers in the extract of original sample and liquid pyrolysates confirms cyanobacteria-dominated microbial mats, whereas the identification of long chain n-alkane series, with maximum at C-26, and prominent C-30 hop-17(21)-ene additionally suggest the presence of sulfate reducing bacteria.
PB  - Univ Barcelona, Barcelona
T2  - Geologica Acta
T1  - Geochemical characterization of the hydrous pyrolysis products from a recent cyanobacteria-dominated microbial mat.
VL  - 14
IS  - 4
SP  - 385
EP  - 401
DO  - 10.1344/GeologicaActa2016.14.4.4
UR  - Kon_3185
ER  - 
@article{
author = "Franco, N. and Mendonca Filho, J. G. and Silva, T. F. and Stojanović, Ksenija A. and Fontana, L. F. and Carvalhal-Gomes, S. B. V. and Silva, F. S. and Furukawa, G. G.",
year = "2016",
abstract = "Hydrous pyrolysis experiments were performed on a recent microbial mat sample from Lagoa Vermelha, Brazil, to determine whether crude oil can be generated and expelled during artificial maturation of the Organic Matter (OM). The experiments were conducted at 280 degrees C, 330 degrees C and 350 degrees C during 20h. Two types of liquid pyrolysis products, assigned as free oil and bitumen, were isolated and analyzed. Free oil represents free organic phase released by hydrous pyrolysis, whereas bitumen was obtained by extraction from the solid pyrolysis residue with dichloromethane. Changes in the OM maturity were determined using Rock-Eval parameters and biomarker maturity ratios of original sample and pyrolysis products. Biomarker compositions of original sample extract and liquid pyrolysates were used for deteiniination of dominant bacterial source. The yields of free oil and bitumen showed that a microbial mat OM has a high liquid hydrocarbons generation potential. Rock-Eval maturity parameters, biopolymer and biomarker compositions indicate a significant increase of the OM maturity during hydrous pyrolysis. At 280 degrees C the release of free, adsorbed and occluded compounds was observed; however, without a cracking of the OM. At 330 degrees C the generation of bitumen and free oil is mostly related to the OM cracking. The highest yield of free oil was recorded at this temperature. Distribution of biomarkers in the extract of original sample and liquid pyrolysates confirms cyanobacteria-dominated microbial mats, whereas the identification of long chain n-alkane series, with maximum at C-26, and prominent C-30 hop-17(21)-ene additionally suggest the presence of sulfate reducing bacteria.",
publisher = "Univ Barcelona, Barcelona",
journal = "Geologica Acta",
title = "Geochemical characterization of the hydrous pyrolysis products from a recent cyanobacteria-dominated microbial mat.",
volume = "14",
number = "4",
pages = "385-401",
doi = "10.1344/GeologicaActa2016.14.4.4",
url = "Kon_3185"
}
Franco, N., Mendonca Filho, J. G., Silva, T. F., Stojanović, K. A., Fontana, L. F., Carvalhal-Gomes, S. B. V., Silva, F. S.,& Furukawa, G. G.. (2016). Geochemical characterization of the hydrous pyrolysis products from a recent cyanobacteria-dominated microbial mat.. in Geologica Acta
Univ Barcelona, Barcelona., 14(4), 385-401.
https://doi.org/10.1344/GeologicaActa2016.14.4.4
Kon_3185
Franco N, Mendonca Filho JG, Silva TF, Stojanović KA, Fontana LF, Carvalhal-Gomes SBV, Silva FS, Furukawa GG. Geochemical characterization of the hydrous pyrolysis products from a recent cyanobacteria-dominated microbial mat.. in Geologica Acta. 2016;14(4):385-401.
doi:10.1344/GeologicaActa2016.14.4.4
Kon_3185 .
Franco, N., Mendonca Filho, J. G., Silva, T. F., Stojanović, Ksenija A., Fontana, L. F., Carvalhal-Gomes, S. B. V., Silva, F. S., Furukawa, G. G., "Geochemical characterization of the hydrous pyrolysis products from a recent cyanobacteria-dominated microbial mat." in Geologica Acta, 14, no. 4 (2016):385-401,
https://doi.org/10.1344/GeologicaActa2016.14.4.4 .,
Kon_3185 .
1
1

Petrographical and organic geochemical study of the Kovin lignite deposit, Serbia

Mitrović, Danica D.; Đoković, Nataša; Životić, Dragana R.; Bechtel, Achim; Šajnović, Aleksandra; Stojanović, Ksenija A.

(Elsevier Science Bv, Amsterdam, 2016)

TY  - JOUR
AU  - Mitrović, Danica D.
AU  - Đoković, Nataša
AU  - Životić, Dragana R.
AU  - Bechtel, Achim
AU  - Šajnović, Aleksandra
AU  - Stojanović, Ksenija A.
PY  - 2016
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2372
AB  - The origin of the organic matter (OM) and the characteristics of the depositional environment of lignites from the Upper Miocene Kovin deposit (hosting three coal seams) of Serbia were evaluated based on petrographic data, bulk organic geochemical parameters, biomarker analysis and stable isotope geochemistry (delta C-13 of individual biomarkers). Samples were collected from four boreholes, GD-601 and GD-603 (the "A" field), and KB-79 and KB-91 (the "B" field), representing different parts of coal seams I, II, and III. Investigated lignites are typical humic coals. The OM of lignites is derived from woody vegetation and herbaceous peat-forming plants, with prevalence of the former in most samples. Peat-forming vegetation is characterized by abundant decay resistant gymnosperm (coniferous) plants, followed by a low amount of angiosperms. Lignite forming plants mostly belonged to the gymnosperm families Cupressaceae, Taxodiaceae, Phyllocladaceae and Pinaceae. Slight input of ferns, fungi and aquatic macrophyta to lignite OM is also evident. Distributions of hopanoids and isotopic compositions of these biomarkers reflect the activity of various microbial populations represented by methanotrophic-, chemoautotrophic- and heterotrophic bacteria during diagenesis. Prominent C-28 28,30-bisnorneohop-13(18)-ene was observed for the first time in the lignite extracts. According to the delta C-13 value it was probably derived from chemoautotrophic bacteria. C28 28,30-bisnorneohop-13(18)-ene could be one of the possible precursors of a series of orphan aromatic hopanoids bearing an ethyl group at C-21, via progressive aromatization. Peatification proceeded in a fresh water environment under variable redox conditions, from anoxic to slightly oxic. All three coal seams are heterogeneous. The lower parts of the coal seams represent a topogenous fresh water peat mire with open water areas, which was subjected to inundations. The upper parts of coal seams represent a wet forest swamp with relatively stable conditions. Despite the observed variations in all three coal seams, the mean values of petrographic and organic geochemical parameters suggest general increasing of wetness and establishment of more stable conditions from seam III to seam I. Maceral and biomarker data indicate that rapid flooding of the bogs stopped peat growth in all three coal seams. Relatively frequent variations in all three coal seams, followed by repetition of lignite characteristics depict well the pronounced seasonality e.g. short term cycles of the climate during Late Miocene in investigated area. (C) 2016 Elsevier B.V. All rights reserved.
PB  - Elsevier Science Bv, Amsterdam
T2  - International Journal of Coal Geology
T1  - Petrographical and organic geochemical study of the Kovin lignite deposit, Serbia
VL  - 168
SP  - 80
EP  - 107
DO  - 10.1016/j.coal.2016.07.008
UR  - Kon_3188
ER  - 
@article{
author = "Mitrović, Danica D. and Đoković, Nataša and Životić, Dragana R. and Bechtel, Achim and Šajnović, Aleksandra and Stojanović, Ksenija A.",
year = "2016",
abstract = "The origin of the organic matter (OM) and the characteristics of the depositional environment of lignites from the Upper Miocene Kovin deposit (hosting three coal seams) of Serbia were evaluated based on petrographic data, bulk organic geochemical parameters, biomarker analysis and stable isotope geochemistry (delta C-13 of individual biomarkers). Samples were collected from four boreholes, GD-601 and GD-603 (the "A" field), and KB-79 and KB-91 (the "B" field), representing different parts of coal seams I, II, and III. Investigated lignites are typical humic coals. The OM of lignites is derived from woody vegetation and herbaceous peat-forming plants, with prevalence of the former in most samples. Peat-forming vegetation is characterized by abundant decay resistant gymnosperm (coniferous) plants, followed by a low amount of angiosperms. Lignite forming plants mostly belonged to the gymnosperm families Cupressaceae, Taxodiaceae, Phyllocladaceae and Pinaceae. Slight input of ferns, fungi and aquatic macrophyta to lignite OM is also evident. Distributions of hopanoids and isotopic compositions of these biomarkers reflect the activity of various microbial populations represented by methanotrophic-, chemoautotrophic- and heterotrophic bacteria during diagenesis. Prominent C-28 28,30-bisnorneohop-13(18)-ene was observed for the first time in the lignite extracts. According to the delta C-13 value it was probably derived from chemoautotrophic bacteria. C28 28,30-bisnorneohop-13(18)-ene could be one of the possible precursors of a series of orphan aromatic hopanoids bearing an ethyl group at C-21, via progressive aromatization. Peatification proceeded in a fresh water environment under variable redox conditions, from anoxic to slightly oxic. All three coal seams are heterogeneous. The lower parts of the coal seams represent a topogenous fresh water peat mire with open water areas, which was subjected to inundations. The upper parts of coal seams represent a wet forest swamp with relatively stable conditions. Despite the observed variations in all three coal seams, the mean values of petrographic and organic geochemical parameters suggest general increasing of wetness and establishment of more stable conditions from seam III to seam I. Maceral and biomarker data indicate that rapid flooding of the bogs stopped peat growth in all three coal seams. Relatively frequent variations in all three coal seams, followed by repetition of lignite characteristics depict well the pronounced seasonality e.g. short term cycles of the climate during Late Miocene in investigated area. (C) 2016 Elsevier B.V. All rights reserved.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "International Journal of Coal Geology",
title = "Petrographical and organic geochemical study of the Kovin lignite deposit, Serbia",
volume = "168",
pages = "80-107",
doi = "10.1016/j.coal.2016.07.008",
url = "Kon_3188"
}
Mitrović, D. D., Đoković, N., Životić, D. R., Bechtel, A., Šajnović, A.,& Stojanović, K. A.. (2016). Petrographical and organic geochemical study of the Kovin lignite deposit, Serbia. in International Journal of Coal Geology
Elsevier Science Bv, Amsterdam., 168, 80-107.
https://doi.org/10.1016/j.coal.2016.07.008
Kon_3188
Mitrović DD, Đoković N, Životić DR, Bechtel A, Šajnović A, Stojanović KA. Petrographical and organic geochemical study of the Kovin lignite deposit, Serbia. in International Journal of Coal Geology. 2016;168:80-107.
doi:10.1016/j.coal.2016.07.008
Kon_3188 .
Mitrović, Danica D., Đoković, Nataša, Životić, Dragana R., Bechtel, Achim, Šajnović, Aleksandra, Stojanović, Ksenija A., "Petrographical and organic geochemical study of the Kovin lignite deposit, Serbia" in International Journal of Coal Geology, 168 (2016):80-107,
https://doi.org/10.1016/j.coal.2016.07.008 .,
Kon_3188 .
20
23
24

The assessment of maturation changes of humic coal organic matter - Insights from closed-system pyrolysis experiments

Vuković, Nikola S.; Životić, Dragana R.; Mendonca Filho, Joao Graciano; Kravić-Stevović, Tamara; Hamor-Vido, Maria; Mendonca, Joalice de Oliveira; Stojanović, Ksenija A.

(Elsevier Science Bv, Amsterdam, 2016)

TY  - JOUR
AU  - Vuković, Nikola S.
AU  - Životić, Dragana R.
AU  - Mendonca Filho, Joao Graciano
AU  - Kravić-Stevović, Tamara
AU  - Hamor-Vido, Maria
AU  - Mendonca, Joalice de Oliveira
AU  - Stojanović, Ksenija A.
PY  - 2016
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/2062
AB  - The artificial maturation changes of the humic coal organic matter (OM) from late diagenesis to the semianthracite stage of coalification were investigated using the closed-system pyrolysis. Two extracted coal samples, a subbituminous coal 26C (with a random vitrinite reflectance Rr = 0.42%) and a high volatile bituminous coal 30C (Rr = 0.56%), were pyrolysed during 4 hat two different temperatures, 250 degrees C and 400 degrees C. The applied petrographic and organic geochemical analyses showed that the humic coal OM is sensitive to the artificial thermal stress. A good correlation between the changes in petrographic characteristics and the derived liquid products was observed. The contents of all vitrinite macerals, as well as total vitrinite, increased during the thermal maturation. The abundance of liptinite macerals decreased during the maturation and they practically disappeared after 4 h of the pyrolysis at 400 degrees C. The total inertinite contents increased after the pyrolysis at 250 degrees C, yet to be decreased after the pyrolysis at 400 degrees C. The content of organic carbon increased from coals to the solid residues at 400 degrees C, whereas the contents of total hydrogen and sulphur decreased. The yields of gases, liquid products and solid residues at respective temperatures were very similar for both coals, regardless of the rank. As expected, the pyrolysis at 400 degrees C gave higher gas and liquid yields than at 250 degrees C. Regarding the liquid pyrolysates, more pronounced changes were observed in the distribution of aromatic compounds than in saturated biomarkers. The distributions of the aromatics indicate that apart from cracking and isomerisation (the formation of thermodynamically more stable isomers), the reactions of dehydrocyclization, condensation (the formation of more stable conjugated systems) and aromatization, as well as reactions involving H2S, elemental sulphur and reactive phenyl radicals released during the pyrolysis, also play an important role. It was shown that bentonitic clay plays a more important role in the subsequent aromatization of the OM than the initial maturity of the coal OM. n-Alkane parameters were useful at lower maturities (up to similar to 0.75% Rr), whereas sterane, naphthalene and phenanthrene maturity ratios are applicable at higher maturities ( gt 0.75% Rr). Hopane parameters showed variable sensitivities over the investigated maturity range (0.5-1.8% Rr). The most sensitive maturity parameters in the wide range of the humic OM maturity (0.5-1.8% Rr) are vitrinite reflectance, phenylnaphthalene ratio, methylchrysene index 2 and a parameter proposed in this study, based on the distribution of methylfluorenes (MF): (2- + 3-MF) / (1- + 4-MF). Generally, maturity parameters based solely on the isomerisation reactions of alkylaromatics, which do not include alkylation/dealkylation processes, are more appropriate for the humic OM, particularly at higher maturities. (C) 2016 Elsevier B.V. All rights reserved.
PB  - Elsevier Science Bv, Amsterdam
T2  - International Journal of Coal Geology
T1  - The assessment of maturation changes of humic coal organic matter - Insights from closed-system pyrolysis experiments
VL  - 154
SP  - 213
EP  - 239
DO  - 10.1016/j.coal.2016.01.007
UR  - Kon_3018
ER  - 
@article{
author = "Vuković, Nikola S. and Životić, Dragana R. and Mendonca Filho, Joao Graciano and Kravić-Stevović, Tamara and Hamor-Vido, Maria and Mendonca, Joalice de Oliveira and Stojanović, Ksenija A.",
year = "2016",
abstract = "The artificial maturation changes of the humic coal organic matter (OM) from late diagenesis to the semianthracite stage of coalification were investigated using the closed-system pyrolysis. Two extracted coal samples, a subbituminous coal 26C (with a random vitrinite reflectance Rr = 0.42%) and a high volatile bituminous coal 30C (Rr = 0.56%), were pyrolysed during 4 hat two different temperatures, 250 degrees C and 400 degrees C. The applied petrographic and organic geochemical analyses showed that the humic coal OM is sensitive to the artificial thermal stress. A good correlation between the changes in petrographic characteristics and the derived liquid products was observed. The contents of all vitrinite macerals, as well as total vitrinite, increased during the thermal maturation. The abundance of liptinite macerals decreased during the maturation and they practically disappeared after 4 h of the pyrolysis at 400 degrees C. The total inertinite contents increased after the pyrolysis at 250 degrees C, yet to be decreased after the pyrolysis at 400 degrees C. The content of organic carbon increased from coals to the solid residues at 400 degrees C, whereas the contents of total hydrogen and sulphur decreased. The yields of gases, liquid products and solid residues at respective temperatures were very similar for both coals, regardless of the rank. As expected, the pyrolysis at 400 degrees C gave higher gas and liquid yields than at 250 degrees C. Regarding the liquid pyrolysates, more pronounced changes were observed in the distribution of aromatic compounds than in saturated biomarkers. The distributions of the aromatics indicate that apart from cracking and isomerisation (the formation of thermodynamically more stable isomers), the reactions of dehydrocyclization, condensation (the formation of more stable conjugated systems) and aromatization, as well as reactions involving H2S, elemental sulphur and reactive phenyl radicals released during the pyrolysis, also play an important role. It was shown that bentonitic clay plays a more important role in the subsequent aromatization of the OM than the initial maturity of the coal OM. n-Alkane parameters were useful at lower maturities (up to similar to 0.75% Rr), whereas sterane, naphthalene and phenanthrene maturity ratios are applicable at higher maturities ( gt 0.75% Rr). Hopane parameters showed variable sensitivities over the investigated maturity range (0.5-1.8% Rr). The most sensitive maturity parameters in the wide range of the humic OM maturity (0.5-1.8% Rr) are vitrinite reflectance, phenylnaphthalene ratio, methylchrysene index 2 and a parameter proposed in this study, based on the distribution of methylfluorenes (MF): (2- + 3-MF) / (1- + 4-MF). Generally, maturity parameters based solely on the isomerisation reactions of alkylaromatics, which do not include alkylation/dealkylation processes, are more appropriate for the humic OM, particularly at higher maturities. (C) 2016 Elsevier B.V. All rights reserved.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "International Journal of Coal Geology",
title = "The assessment of maturation changes of humic coal organic matter - Insights from closed-system pyrolysis experiments",
volume = "154",
pages = "213-239",
doi = "10.1016/j.coal.2016.01.007",
url = "Kon_3018"
}
Vuković, N. S., Životić, D. R., Mendonca Filho, J. G., Kravić-Stevović, T., Hamor-Vido, M., Mendonca, J. d. O.,& Stojanović, K. A.. (2016). The assessment of maturation changes of humic coal organic matter - Insights from closed-system pyrolysis experiments. in International Journal of Coal Geology
Elsevier Science Bv, Amsterdam., 154, 213-239.
https://doi.org/10.1016/j.coal.2016.01.007
Kon_3018
Vuković NS, Životić DR, Mendonca Filho JG, Kravić-Stevović T, Hamor-Vido M, Mendonca JDO, Stojanović KA. The assessment of maturation changes of humic coal organic matter - Insights from closed-system pyrolysis experiments. in International Journal of Coal Geology. 2016;154:213-239.
doi:10.1016/j.coal.2016.01.007
Kon_3018 .
Vuković, Nikola S., Životić, Dragana R., Mendonca Filho, Joao Graciano, Kravić-Stevović, Tamara, Hamor-Vido, Maria, Mendonca, Joalice de Oliveira, Stojanović, Ksenija A., "The assessment of maturation changes of humic coal organic matter - Insights from closed-system pyrolysis experiments" in International Journal of Coal Geology, 154 (2016):213-239,
https://doi.org/10.1016/j.coal.2016.01.007 .,
Kon_3018 .
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