TY  - JOUR
AU  - Pantović-Spajić, Katarina
AU  - Marković, Branislav
AU  - Pavlović, Miroslav M.
AU  - Sokić, Miroslav
AU  - Zildžović, Snežana
AU  - Đorđević, Nataša
AU  - Stojanović, Ksenija A.
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4845
AB  - The study is focused on the determination of the most effective chemical leaching process for the simultaneous demineralization/deashing and desulfurization of subbituminous coal from the Bogovina Basin. Coal was treated for 30 min, at different temperatures, using variable concentrations of hydrochloric, nitric, acetic and citric acids; hydrogen peroxide, mixture of hydrogen peroxide and nitric acid (pH 2), as well as by the stepwise leaching process (nitric acid + mixture of hydrogen peroxide and nitric acid, pH 2). The changes in mineral composition, caused by the chemical leaching, are followed using X-ray diffraction, whereas alterations of coal organic matter are tracked by Fourier-transform infrared spectroscopy and the content of fixed carbon. Inorganic acid leaching, regardless of the temperature and acid concentration, enabled the successful deashing of coal, whereas the percent of desulfurization was insufficient. The organic acid leaching was not satisfactory for both, deashing and desulfurization. Leaching by H2O2 and H2O2/HNO3 mixture (pH 2) resulted in moderate desulfurization, but the ash reduction was low. The most suitable method for the simultaneous effective ash (78 wt.%) and the sulfur (66 wt. %) removal from Bogovina coal is the two-step leaching, combining 10 vol. % HNO3 and mixture of 35 vol. % H2O2/10 vol. % HNO3 of pH 2 at 60°C.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - insights from chemical leaching
VL  - 86
IS  - 11
SP  - 1113
EP  - 1126
DO  - 10.2298/JSC210719061P
ER  - 

@article{
author = "Pantović-Spajić, Katarina and Marković, Branislav and Pavlović, Miroslav M. and Sokić, Miroslav and Zildžović, Snežana and Đorđević, Nataša and Stojanović, Ksenija A.",
year = "2021",
abstract = "The study is focused on the determination of the most effective chemical leaching process for the simultaneous demineralization/deashing and desulfurization of subbituminous coal from the Bogovina Basin. Coal was treated for 30 min, at different temperatures, using variable concentrations of hydrochloric, nitric, acetic and citric acids; hydrogen peroxide, mixture of hydrogen peroxide and nitric acid (pH 2), as well as by the stepwise leaching process (nitric acid + mixture of hydrogen peroxide and nitric acid, pH 2). The changes in mineral composition, caused by the chemical leaching, are followed using X-ray diffraction, whereas alterations of coal organic matter are tracked by Fourier-transform infrared spectroscopy and the content of fixed carbon. Inorganic acid leaching, regardless of the temperature and acid concentration, enabled the successful deashing of coal, whereas the percent of desulfurization was insufficient. The organic acid leaching was not satisfactory for both, deashing and desulfurization. Leaching by H2O2 and H2O2/HNO3 mixture (pH 2) resulted in moderate desulfurization, but the ash reduction was low. The most suitable method for the simultaneous effective ash (78 wt.%) and the sulfur (66 wt. %) removal from Bogovina coal is the two-step leaching, combining 10 vol. % HNO3 and mixture of 35 vol. % H2O2/10 vol. % HNO3 of pH 2 at 60°C.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - insights from chemical leaching",
volume = "86",
number = "11",
pages = "1113-1126",
doi = "10.2298/JSC210719061P"
}

Pantović-Spajić, K., Marković, B., Pavlović, M. M., Sokić, M., Zildžović, S., Đorđević, N.,& Stojanović, K. A.. (2021). Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - insights from chemical leaching. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 86(11), 1113-1126.
https://doi.org/10.2298/JSC210719061P

Pantović-Spajić K, Marković B, Pavlović MM, Sokić M, Zildžović S, Đorđević N, Stojanović KA. Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - insights from chemical leaching. in Journal of the Serbian Chemical Society. 2021;86(11):1113-1126.
doi:10.2298/JSC210719061P .

Pantović-Spajić, Katarina, Marković, Branislav, Pavlović, Miroslav M., Sokić, Miroslav, Zildžović, Snežana, Đorđević, Nataša, Stojanović, Ksenija A., "Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - insights from chemical leaching" in Journal of the Serbian Chemical Society, 86, no. 11 (2021):1113-1126,
https://doi.org/10.2298/JSC210719061P . .

TY  - JOUR
AU  - Dević, Gordana N.
AU  - Ilić, Mila
AU  - Zildžović, Snežana
AU  - Avdalović, Jelena
AU  - Miletić, Srđan B.
AU  - Bulatović, Sandra
AU  - Vrvić, Miroslav
PY  - 2020
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4971
AB  - Concentrations of 10 potentially toxic trace elements were measured in soil samples collected from 18 sites in urban areas of Belgrade, the capital and the largest city in Serbia. Samples were analysed in order to assess the extent of soil contamination and to distinguish natural and anthropogenic input. The results demonstrated a general Zn, Pb, and Cd enrichment in surface samples, hence, after comparison with guidelines, it has been determined that there is a potential risk for human health. In the surface and buried samples, traces of cooper were detected. The highest concentrations of Cr (121 ± 12.3 mg/kg) and Ni (94.9 ± 12.6 mg/kg) were found at a sediment depth of 2 m and should be ascribed to geogenic sources. The results of HCA and PCA analysis supported a natural origin of Co, Cu, Mn, Cr, and Ni, while Cd, Zn, and Pb originated from anthropogenic inputs. Based on the pollution indices, Cd made the most dominant contribution, posing a high contamination risk in the studied area. Results of Nemerow pollution index (PIN) and potential ecological risk index (PER) demonstrated that pollution by heavy metals in sediments on several sites is moderately intense.
PB  - Taylor & Francis Group LLC
T2  - Journal of Environmental Science and Health, Part A
T1  - Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia
VL  - 55
IS  - 6
SP  - 765
EP  - 775
DO  - 10.1080/10934529.2020.1741999
ER  - 

@article{
author = "Dević, Gordana N. and Ilić, Mila and Zildžović, Snežana and Avdalović, Jelena and Miletić, Srđan B. and Bulatović, Sandra and Vrvić, Miroslav",
year = "2020",
abstract = "Concentrations of 10 potentially toxic trace elements were measured in soil samples collected from 18 sites in urban areas of Belgrade, the capital and the largest city in Serbia. Samples were analysed in order to assess the extent of soil contamination and to distinguish natural and anthropogenic input. The results demonstrated a general Zn, Pb, and Cd enrichment in surface samples, hence, after comparison with guidelines, it has been determined that there is a potential risk for human health. In the surface and buried samples, traces of cooper were detected. The highest concentrations of Cr (121 ± 12.3 mg/kg) and Ni (94.9 ± 12.6 mg/kg) were found at a sediment depth of 2 m and should be ascribed to geogenic sources. The results of HCA and PCA analysis supported a natural origin of Co, Cu, Mn, Cr, and Ni, while Cd, Zn, and Pb originated from anthropogenic inputs. Based on the pollution indices, Cd made the most dominant contribution, posing a high contamination risk in the studied area. Results of Nemerow pollution index (PIN) and potential ecological risk index (PER) demonstrated that pollution by heavy metals in sediments on several sites is moderately intense.",
publisher = "Taylor & Francis Group LLC",
journal = "Journal of Environmental Science and Health, Part A",
title = "Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia",
volume = "55",
number = "6",
pages = "765-775",
doi = "10.1080/10934529.2020.1741999"
}

Dević, G. N., Ilić, M., Zildžović, S., Avdalović, J., Miletić, S. B., Bulatović, S.,& Vrvić, M.. (2020). Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia. in Journal of Environmental Science and Health, Part A
Taylor & Francis Group LLC., 55(6), 765-775.
https://doi.org/10.1080/10934529.2020.1741999

Dević GN, Ilić M, Zildžović S, Avdalović J, Miletić SB, Bulatović S, Vrvić M. Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia. in Journal of Environmental Science and Health, Part A. 2020;55(6):765-775.
doi:10.1080/10934529.2020.1741999 .

Dević, Gordana N., Ilić, Mila, Zildžović, Snežana, Avdalović, Jelena, Miletić, Srđan B., Bulatović, Sandra, Vrvić, Miroslav, "Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia" in Journal of Environmental Science and Health, Part A, 55, no. 6 (2020):765-775,
https://doi.org/10.1080/10934529.2020.1741999 . .

TY  - CONF
AU  - Avdalović, Jelena
AU  - Beškoski, Vladimir
AU  - Zildžović, Snežana
AU  - Stojanović, Mirjana D.
AU  - Miletić, Srđan B.
AU  - Ilić, Mila
AU  - Vrvić, Miroslav
PY  - 2013
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5390
AB  - The object of this study was to investigate the possibility of phosphorus leaching from mixture of phosphate ore and pyrite minerals, in laboratory conditions using sulfuric acid generated by bacterial culture of Acidithiobacillus ferrooxidans (At. ferrooxidans), because the possible application of these mixtures as a natural phosphate fertilizers. Results obtained show that phosphorus has been leached from the test mixture up to 34,5 % in suspension with At. ferrooxidans, and in the same time, degree of leaching in control suspension (without At. ferrooxidans) was up to 3,8 %
PB  - University of Beograde - Technical Faculty in Bor
C3  - Proceedings - 45th International October Conference on Mining and Metallurgy, IOC 2013, October 16-19, 2013, Bor
T1  - Bacterially generated H2SO4 from pyrite, as a leaching agent for phosphorus from phosphate ore
SP  - 503
EP  - 506
UR  - https://hdl.handle.net/21.15107/rcub_cer_4982
ER  - 

@conference{
author = "Avdalović, Jelena and Beškoski, Vladimir and Zildžović, Snežana and Stojanović, Mirjana D. and Miletić, Srđan B. and Ilić, Mila and Vrvić, Miroslav",
year = "2013",
abstract = "The object of this study was to investigate the possibility of phosphorus leaching from mixture of phosphate ore and pyrite minerals, in laboratory conditions using sulfuric acid generated by bacterial culture of Acidithiobacillus ferrooxidans (At. ferrooxidans), because the possible application of these mixtures as a natural phosphate fertilizers. Results obtained show that phosphorus has been leached from the test mixture up to 34,5 % in suspension with At. ferrooxidans, and in the same time, degree of leaching in control suspension (without At. ferrooxidans) was up to 3,8 %",
publisher = "University of Beograde - Technical Faculty in Bor",
journal = "Proceedings - 45th International October Conference on Mining and Metallurgy, IOC 2013, October 16-19, 2013, Bor",
title = "Bacterially generated H2SO4 from pyrite, as a leaching agent for phosphorus from phosphate ore",
pages = "503-506",
url = "https://hdl.handle.net/21.15107/rcub_cer_4982"
}

Avdalović, J., Beškoski, V., Zildžović, S., Stojanović, M. D., Miletić, S. B., Ilić, M.,& Vrvić, M.. (2013). Bacterially generated H2SO4 from pyrite, as a leaching agent for phosphorus from phosphate ore. in Proceedings - 45th International October Conference on Mining and Metallurgy, IOC 2013, October 16-19, 2013, Bor
University of Beograde - Technical Faculty in Bor., 503-506.
https://hdl.handle.net/21.15107/rcub_cer_4982

Avdalović J, Beškoski V, Zildžović S, Stojanović MD, Miletić SB, Ilić M, Vrvić M. Bacterially generated H2SO4 from pyrite, as a leaching agent for phosphorus from phosphate ore. in Proceedings - 45th International October Conference on Mining and Metallurgy, IOC 2013, October 16-19, 2013, Bor. 2013;:503-506.
https://hdl.handle.net/21.15107/rcub_cer_4982 .

Avdalović, Jelena, Beškoski, Vladimir, Zildžović, Snežana, Stojanović, Mirjana D., Miletić, Srđan B., Ilić, Mila, Vrvić, Miroslav, "Bacterially generated H2SO4 from pyrite, as a leaching agent for phosphorus from phosphate ore" in Proceedings - 45th International October Conference on Mining and Metallurgy, IOC 2013, October 16-19, 2013, Bor (2013):503-506,
https://hdl.handle.net/21.15107/rcub_cer_4982 .

TY  - JOUR
AU  - Avdalović, Jelena
AU  - Beškoski, Vladimir
AU  - Ranđelović, Danijela
AU  - Stojanović, Mirjana D.
AU  - Zildžović, Snežana
AU  - Vrvić, Miroslav M.
PY  - 2012
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/141
AB  - Phosphorus solubilization from insoluble phosphate ores by acidophilic autotrophs and heterotrophs is a research of significant interest, because of potential use of these ores as fertilizers, which are economically and ecologically more acceptable than industrial phosphate fertilizers. The object of this paper was to examine the possibility of phosphorus leaching from phosphate ore from Lisina deposit (Bosilegrad), by bacterially generated sulfuric acid, in laboratory conditions. The experiments were carried out with bacterium Acidithiobacillus (At.) ferrooxidans, which is isolated and selected from the copper sulphide mine in Bor. The main goal of the experiment was to confirm if it is possible to use phosphate ore in combination with examined bacterial culture, as a natural fertilizer. Results obtained show that phosphorus has been leached up to 24,5 % in suspension with At. ferrooxidans, and in the same time, degree of leaching in control suspension (without At. frrooxidans) was up to 7,2 %. Influence of At. ferrooxidans on phosphorus solubilization has been confirmed, so the future perspective of our investigations should be directed to examination of microbiological leaching of apatite mixtures with sulphide substrates, and their potential use in quality improvement of alkaline soils.
AB  - Postupci rastvaranja fosfora iz nerastvornih fosfatnih ruda pomoću acidofilnih autotrofa i heterotrofa spadaju u veoma bitna istraživanja, zbog moguće primene ovih ruda kao đubriva, čija je upotreba ekonomski i ekološki prihvatljivija od industrijskih fosfatnih đubriva. Predmet ovog rada je bio da se ispita mogućnost rastvaranja fosfora iz fosfatne rude sa ležišta Lisina (Bosilegrad), u laboratorijskim uslovima, dejstvom sumporne kiseline generisane pomoću bakterijske kulture Acidithiobacillus (At.) ferrooxidans, izolovane i selekcionisane sa jalovišta površinskog kopa rudnika bakra u Boru. Cilj eksperimenta je da se utvrdi da li je moguće rudu sa navedenog ležišta u kombinaciji sa ispitivanom bakterijskom kulturom koristiti kao prirodno đubrivo. Dobijeni rezultati pokazuju da se tokom eksperimenta rastvara fosfor iz ispitivane rude pod uticajem At. ferrooxidans i da je stepen rastvaranja 24,5 %, dok je rastvaranje fosfora u kontrolnoj suspenziji (bez At. ferrooxidans) iznosilo 7,2 %. Uticaj At. ferrooxidans na rastvaranje fosfora je potvrđen, tako da dalja istraživanja treba usmeriti na ispitivanja mikrobiološkog luženja mešavina apatita sa sulfidnim supstratima, zbog eventualne primene vezane za poboljšanje kvaliteta alkalnih zemljišta.
T2  - Zaštita materijala
T1  - Examination of phosphate ores bioleaching from Lisina deposit
T1  - Ispitivanje mogućnosti bioluženja fosfora iz fosfatne rude sa ležišta Lisina
VL  - 53
IS  - 3
SP  - 225
EP  - 230
UR  - https://hdl.handle.net/21.15107/rcub_cherry_141
ER  - 

@article{
author = "Avdalović, Jelena and Beškoski, Vladimir and Ranđelović, Danijela and Stojanović, Mirjana D. and Zildžović, Snežana and Vrvić, Miroslav M.",
year = "2012",
abstract = "Phosphorus solubilization from insoluble phosphate ores by acidophilic autotrophs and heterotrophs is a research of significant interest, because of potential use of these ores as fertilizers, which are economically and ecologically more acceptable than industrial phosphate fertilizers. The object of this paper was to examine the possibility of phosphorus leaching from phosphate ore from Lisina deposit (Bosilegrad), by bacterially generated sulfuric acid, in laboratory conditions. The experiments were carried out with bacterium Acidithiobacillus (At.) ferrooxidans, which is isolated and selected from the copper sulphide mine in Bor. The main goal of the experiment was to confirm if it is possible to use phosphate ore in combination with examined bacterial culture, as a natural fertilizer. Results obtained show that phosphorus has been leached up to 24,5 % in suspension with At. ferrooxidans, and in the same time, degree of leaching in control suspension (without At. frrooxidans) was up to 7,2 %. Influence of At. ferrooxidans on phosphorus solubilization has been confirmed, so the future perspective of our investigations should be directed to examination of microbiological leaching of apatite mixtures with sulphide substrates, and their potential use in quality improvement of alkaline soils., Postupci rastvaranja fosfora iz nerastvornih fosfatnih ruda pomoću acidofilnih autotrofa i heterotrofa spadaju u veoma bitna istraživanja, zbog moguće primene ovih ruda kao đubriva, čija je upotreba ekonomski i ekološki prihvatljivija od industrijskih fosfatnih đubriva. Predmet ovog rada je bio da se ispita mogućnost rastvaranja fosfora iz fosfatne rude sa ležišta Lisina (Bosilegrad), u laboratorijskim uslovima, dejstvom sumporne kiseline generisane pomoću bakterijske kulture Acidithiobacillus (At.) ferrooxidans, izolovane i selekcionisane sa jalovišta površinskog kopa rudnika bakra u Boru. Cilj eksperimenta je da se utvrdi da li je moguće rudu sa navedenog ležišta u kombinaciji sa ispitivanom bakterijskom kulturom koristiti kao prirodno đubrivo. Dobijeni rezultati pokazuju da se tokom eksperimenta rastvara fosfor iz ispitivane rude pod uticajem At. ferrooxidans i da je stepen rastvaranja 24,5 %, dok je rastvaranje fosfora u kontrolnoj suspenziji (bez At. ferrooxidans) iznosilo 7,2 %. Uticaj At. ferrooxidans na rastvaranje fosfora je potvrđen, tako da dalja istraživanja treba usmeriti na ispitivanja mikrobiološkog luženja mešavina apatita sa sulfidnim supstratima, zbog eventualne primene vezane za poboljšanje kvaliteta alkalnih zemljišta.",
journal = "Zaštita materijala",
title = "Examination of phosphate ores bioleaching from Lisina deposit, Ispitivanje mogućnosti bioluženja fosfora iz fosfatne rude sa ležišta Lisina",
volume = "53",
number = "3",
pages = "225-230",
url = "https://hdl.handle.net/21.15107/rcub_cherry_141"
}

Avdalović, J., Beškoski, V., Ranđelović, D., Stojanović, M. D., Zildžović, S.,& Vrvić, M. M.. (2012). Examination of phosphate ores bioleaching from Lisina deposit. in Zaštita materijala, 53(3), 225-230.
https://hdl.handle.net/21.15107/rcub_cherry_141

Avdalović J, Beškoski V, Ranđelović D, Stojanović MD, Zildžović S, Vrvić MM. Examination of phosphate ores bioleaching from Lisina deposit. in Zaštita materijala. 2012;53(3):225-230.
https://hdl.handle.net/21.15107/rcub_cherry_141 .

Avdalović, Jelena, Beškoski, Vladimir, Ranđelović, Danijela, Stojanović, Mirjana D., Zildžović, Snežana, Vrvić, Miroslav M., "Examination of phosphate ores bioleaching from Lisina deposit" in Zaštita materijala, 53, no. 3 (2012):225-230,
https://hdl.handle.net/21.15107/rcub_cherry_141 .