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  - https://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
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"
}

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

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 .

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 . .

TY  - JOUR
AU  - Radović, Miljana D.
AU  - Mitrovic, Jelena Z.
AU  - Bojic, Danijela V.
AU  - Antonijevic, Milan D.
AU  - Kostic, Milos M.
AU  - Baošić, Rada
AU  - Bojic, Aleksandar Lj.
PY  - 2014
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1889
AB  - The photodecolourisation of textile dye Reactive Blue 19 (RB 19), an anionic anthraquinone dye of the reactive class, was investigated using UV radiation in the presence of H2O2 in a batch photo-reactor with low-pressure mercury lamps. The effects of the system parameters: initial pH, initial dye concentration, concentration of peroxide and radiation intensity, as well as the presence of salts, (NaCl, Na2SO4, NaNO3, NaH2PO4) on dye decolourisation was examined. Increasing the initial pH resulted in an increase in decolourisation efficiency. Results showed that with an increase of dye concentration from 10 to 100 mg.l(-1), the efficiency of the process decreases. The highest decolourisation rates were noted at H2O2 concentrations of approximately 30 mmol.l(-1). The increase of radiation intensity from 730 to 1 950 mu W.cm(-2), linearly increases decolourisation efficiency. The inorganic ions investigated have inhibiting effects on RB 19 decolourisation by the UV/H2O2 process with inhibition intensities in the following order: H2PO4- gt  NO3- gt  SO42- gt  Cl-. This study has shown that the UV/H2O2 process is a promising technology for degradation of RB 19 in water and wastewater.
PB  - Water Research Commission, Pretoria
T2  - Water SA / South Africa
T1  - Effects of system parameters and inorganic salts on the photodecolourisation of textile dye Reactive Blue 19 by UV/H2O2 process
VL  - 40
IS  - 3
SP  - 571
EP  - 577
DO  - 10.4314/wsa.v40i3.21
ER  - 

@article{
author = "Radović, Miljana D. and Mitrovic, Jelena Z. and Bojic, Danijela V. and Antonijevic, Milan D. and Kostic, Milos M. and Baošić, Rada and Bojic, Aleksandar Lj.",
year = "2014",
abstract = "The photodecolourisation of textile dye Reactive Blue 19 (RB 19), an anionic anthraquinone dye of the reactive class, was investigated using UV radiation in the presence of H2O2 in a batch photo-reactor with low-pressure mercury lamps. The effects of the system parameters: initial pH, initial dye concentration, concentration of peroxide and radiation intensity, as well as the presence of salts, (NaCl, Na2SO4, NaNO3, NaH2PO4) on dye decolourisation was examined. Increasing the initial pH resulted in an increase in decolourisation efficiency. Results showed that with an increase of dye concentration from 10 to 100 mg.l(-1), the efficiency of the process decreases. The highest decolourisation rates were noted at H2O2 concentrations of approximately 30 mmol.l(-1). The increase of radiation intensity from 730 to 1 950 mu W.cm(-2), linearly increases decolourisation efficiency. The inorganic ions investigated have inhibiting effects on RB 19 decolourisation by the UV/H2O2 process with inhibition intensities in the following order: H2PO4- gt  NO3- gt  SO42- gt  Cl-. This study has shown that the UV/H2O2 process is a promising technology for degradation of RB 19 in water and wastewater.",
publisher = "Water Research Commission, Pretoria",
journal = "Water SA / South Africa",
title = "Effects of system parameters and inorganic salts on the photodecolourisation of textile dye Reactive Blue 19 by UV/H2O2 process",
volume = "40",
number = "3",
pages = "571-577",
doi = "10.4314/wsa.v40i3.21"
}

Radović, M. D., Mitrovic, J. Z., Bojic, D. V., Antonijevic, M. D., Kostic, M. M., Baošić, R.,& Bojic, A. Lj.. (2014). Effects of system parameters and inorganic salts on the photodecolourisation of textile dye Reactive Blue 19 by UV/H2O2 process. in Water SA / South Africa
Water Research Commission, Pretoria., 40(3), 571-577.
https://doi.org/10.4314/wsa.v40i3.21

Radović MD, Mitrovic JZ, Bojic DV, Antonijevic MD, Kostic MM, Baošić R, Bojic AL. Effects of system parameters and inorganic salts on the photodecolourisation of textile dye Reactive Blue 19 by UV/H2O2 process. in Water SA / South Africa. 2014;40(3):571-577.
doi:10.4314/wsa.v40i3.21 .

Radović, Miljana D., Mitrovic, Jelena Z., Bojic, Danijela V., Antonijevic, Milan D., Kostic, Milos M., Baošić, Rada, Bojic, Aleksandar Lj., "Effects of system parameters and inorganic salts on the photodecolourisation of textile dye Reactive Blue 19 by UV/H2O2 process" in Water SA / South Africa, 40, no. 3 (2014):571-577,
https://doi.org/10.4314/wsa.v40i3.21 . .