TY  - CONF
AU  - Antić, Katarina Đ.
AU  - Kojić, Ivan
AU  - Lješević, Marija
AU  - Milić, Jelena
AU  - Stošić, Milena
AU  - Radonić, Jelena
AU  - Šolević Knudsen, Tatjana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6266
AB  - This research aimed to assess the biotoxicity of water from the Kovin Dunavac marina 
to Aliivibrio fischeri.
PB  - Serbian Chemical Society
C3  - Book of abstracts - 9th Symposium Chemistry and Environmental Protection - EnviroChem 2023 with international participation, 4-7. jun 2023. godine, Kladovo
T1  - Evaluation of the biotoxicity potential of water from the Kovin Dunavac  marina (Kovin, Serbia) to Aliivibrio fischeri
UR  - https://hdl.handle.net/21.15107/rcub_cer_6266
ER  - 

@conference{
author = "Antić, Katarina Đ. and Kojić, Ivan and Lješević, Marija and Milić, Jelena and Stošić, Milena and Radonić, Jelena and Šolević Knudsen, Tatjana",
year = "2023",
abstract = "This research aimed to assess the biotoxicity of water from the Kovin Dunavac marina 
to Aliivibrio fischeri.",
publisher = "Serbian Chemical Society",
journal = "Book of abstracts - 9th Symposium Chemistry and Environmental Protection - EnviroChem 2023 with international participation, 4-7. jun 2023. godine, Kladovo",
title = "Evaluation of the biotoxicity potential of water from the Kovin Dunavac  marina (Kovin, Serbia) to Aliivibrio fischeri",
url = "https://hdl.handle.net/21.15107/rcub_cer_6266"
}

Antić, K. Đ., Kojić, I., Lješević, M., Milić, J., Stošić, M., Radonić, J.,& Šolević Knudsen, T.. (2023). Evaluation of the biotoxicity potential of water from the Kovin Dunavac  marina (Kovin, Serbia) to Aliivibrio fischeri. in Book of abstracts - 9th Symposium Chemistry and Environmental Protection - EnviroChem 2023 with international participation, 4-7. jun 2023. godine, Kladovo
Serbian Chemical Society..
https://hdl.handle.net/21.15107/rcub_cer_6266

Antić KĐ, Kojić I, Lješević M, Milić J, Stošić M, Radonić J, Šolević Knudsen T. Evaluation of the biotoxicity potential of water from the Kovin Dunavac  marina (Kovin, Serbia) to Aliivibrio fischeri. in Book of abstracts - 9th Symposium Chemistry and Environmental Protection - EnviroChem 2023 with international participation, 4-7. jun 2023. godine, Kladovo. 2023;.
https://hdl.handle.net/21.15107/rcub_cer_6266 .

Antić, Katarina Đ., Kojić, Ivan, Lješević, Marija, Milić, Jelena, Stošić, Milena, Radonić, Jelena, Šolević Knudsen, Tatjana, "Evaluation of the biotoxicity potential of water from the Kovin Dunavac  marina (Kovin, Serbia) to Aliivibrio fischeri" in Book of abstracts - 9th Symposium Chemistry and Environmental Protection - EnviroChem 2023 with international participation, 4-7. jun 2023. godine, Kladovo (2023),
https://hdl.handle.net/21.15107/rcub_cer_6266 .

TY  - CONF
AU  - Kojić, Ivan
AU  - Dojčinović, Biljana
AU  - Stojanović, Ksenija
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7547
AB  - In this study the solid residue obtained by the co-pyrolysis of low quality, mineral-rich lignite taken from the Kostolac Basin, Serbia (45.36% of ash; 33.42% of total organic carbon; net calorific value of 9.5 MJ/kg) and high density polyethylene, HDPE (mass ratio, 1:1) at 500 oC was tested as a sorbent for Cu2+ ions, considering that as a coaly-based material, simultaneously enriched in clays, it may have good adsorption properties. Sorption experiments of were performed using 0.5 g of solid co-pyrolysis lignite/HDPE product, as sorbent which was treated with 5 cm3 of model solutions containing ~ 200 times higher concentration of Cu2+ ions (242.60 mg/dm3), in relationship to its maximal allowed content in surface water of bad quality. Model solutions were prepared using corresponding nitrates dissolved in distilled water. Two model solutions were prepared. The first model solution contained individual Cu2+ ions, whereas the second one contained mixture of Cu2+, Pb2+, Co2+ and Cd2+ ions. Concentration of each ion in latter was also ~ 200 times higher than its maximal allowed content in surface water of bad quality. Treatment with distilled water was used as a blank. Concentrations of heavy metal ions in initial model solutions and supernatants obtained after sorption experiments were measured using inductively coupled plasma – optical emission spectrometry. The obtained results indicated very efficient sorption of Cu2+ ions from its individual model solution, attaining 99.96%. The efficiency of Cu2+ ions sorption was also high (99.95%) from model solution, which contained mixture of metal ions. It is important to mention that sorption of other metal ions from model solution mixture was also effective (99.99%, 80.70% and 71.04% for Pb2, Cd2+ and Co2+, respectively). The preliminary results showed promising sorption properties of solid residue obtained by the co-pyrolysis of lignite and HDPE against Cu2+, but also possibly for other heavy metals, particularly, Pb2+ ions.
PB  - Vienna, Austria : Geologische Bundesanstalt
C3  - PANGEO Austria 2022 “Beyond Earth Science Frontiers”, Leoben, Austria, September 10-14, 2022
T1  - Preliminary study of copper(II) ions removal from wastewater using solid residue obtained by co-pyrolysis of lignite and high density polyethylene mixture
SP  - 90
EP  - 90
UR  - https://hdl.handle.net/21.15107/rcub_cer_7547
ER  - 

@conference{
author = "Kojić, Ivan and Dojčinović, Biljana and Stojanović, Ksenija",
year = "2022",
abstract = "In this study the solid residue obtained by the co-pyrolysis of low quality, mineral-rich lignite taken from the Kostolac Basin, Serbia (45.36% of ash; 33.42% of total organic carbon; net calorific value of 9.5 MJ/kg) and high density polyethylene, HDPE (mass ratio, 1:1) at 500 oC was tested as a sorbent for Cu2+ ions, considering that as a coaly-based material, simultaneously enriched in clays, it may have good adsorption properties. Sorption experiments of were performed using 0.5 g of solid co-pyrolysis lignite/HDPE product, as sorbent which was treated with 5 cm3 of model solutions containing ~ 200 times higher concentration of Cu2+ ions (242.60 mg/dm3), in relationship to its maximal allowed content in surface water of bad quality. Model solutions were prepared using corresponding nitrates dissolved in distilled water. Two model solutions were prepared. The first model solution contained individual Cu2+ ions, whereas the second one contained mixture of Cu2+, Pb2+, Co2+ and Cd2+ ions. Concentration of each ion in latter was also ~ 200 times higher than its maximal allowed content in surface water of bad quality. Treatment with distilled water was used as a blank. Concentrations of heavy metal ions in initial model solutions and supernatants obtained after sorption experiments were measured using inductively coupled plasma – optical emission spectrometry. The obtained results indicated very efficient sorption of Cu2+ ions from its individual model solution, attaining 99.96%. The efficiency of Cu2+ ions sorption was also high (99.95%) from model solution, which contained mixture of metal ions. It is important to mention that sorption of other metal ions from model solution mixture was also effective (99.99%, 80.70% and 71.04% for Pb2, Cd2+ and Co2+, respectively). The preliminary results showed promising sorption properties of solid residue obtained by the co-pyrolysis of lignite and HDPE against Cu2+, but also possibly for other heavy metals, particularly, Pb2+ ions.",
publisher = "Vienna, Austria : Geologische Bundesanstalt",
journal = "PANGEO Austria 2022 “Beyond Earth Science Frontiers”, Leoben, Austria, September 10-14, 2022",
title = "Preliminary study of copper(II) ions removal from wastewater using solid residue obtained by co-pyrolysis of lignite and high density polyethylene mixture",
pages = "90-90",
url = "https://hdl.handle.net/21.15107/rcub_cer_7547"
}

Kojić, I., Dojčinović, B.,& Stojanović, K.. (2022). Preliminary study of copper(II) ions removal from wastewater using solid residue obtained by co-pyrolysis of lignite and high density polyethylene mixture. in PANGEO Austria 2022 “Beyond Earth Science Frontiers”, Leoben, Austria, September 10-14, 2022
Vienna, Austria : Geologische Bundesanstalt., 90-90.
https://hdl.handle.net/21.15107/rcub_cer_7547

Kojić I, Dojčinović B, Stojanović K. Preliminary study of copper(II) ions removal from wastewater using solid residue obtained by co-pyrolysis of lignite and high density polyethylene mixture. in PANGEO Austria 2022 “Beyond Earth Science Frontiers”, Leoben, Austria, September 10-14, 2022. 2022;:90-90.
https://hdl.handle.net/21.15107/rcub_cer_7547 .

Kojić, Ivan, Dojčinović, Biljana, Stojanović, Ksenija, "Preliminary study of copper(II) ions removal from wastewater using solid residue obtained by co-pyrolysis of lignite and high density polyethylene mixture" in PANGEO Austria 2022 “Beyond Earth Science Frontiers”, Leoben, Austria, September 10-14, 2022 (2022):90-90,
https://hdl.handle.net/21.15107/rcub_cer_7547 .

TY  - CONF
AU  - Antić, Katarina Đ.
AU  - Kojić, Ivan
AU  - Šolević Knudsen, Tatjana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6127
AB  - The aim of this study was analysis of the occurrence, abundance, distribution and origin of polycyclic aromatic hydrocarbons (PAHs) in sediments of the Kovin Dunavac.
PB  - Ljubljana, Slovenia : University of Ljubljana Press
C3  - The 22nd European Meeting on Environmental Chemistry, EMEC22 - Book of Abstracts, 5 – 8 December, 2022, Ljubljana, Slovenia
T1  - Occurrence, Distribution Pattern and Origin of Polycyclic Aromatic Hydrocarbons in the River Marina Sediments of the Kovin Dunavac (Kovin, Serbia)
UR  - https://hdl.handle.net/21.15107/rcub_cer_6127
ER  - 

@conference{
author = "Antić, Katarina Đ. and Kojić, Ivan and Šolević Knudsen, Tatjana",
year = "2022",
abstract = "The aim of this study was analysis of the occurrence, abundance, distribution and origin of polycyclic aromatic hydrocarbons (PAHs) in sediments of the Kovin Dunavac.",
publisher = "Ljubljana, Slovenia : University of Ljubljana Press",
journal = "The 22nd European Meeting on Environmental Chemistry, EMEC22 - Book of Abstracts, 5 – 8 December, 2022, Ljubljana, Slovenia",
title = "Occurrence, Distribution Pattern and Origin of Polycyclic Aromatic Hydrocarbons in the River Marina Sediments of the Kovin Dunavac (Kovin, Serbia)",
url = "https://hdl.handle.net/21.15107/rcub_cer_6127"
}

Antić, K. Đ., Kojić, I.,& Šolević Knudsen, T.. (2022). Occurrence, Distribution Pattern and Origin of Polycyclic Aromatic Hydrocarbons in the River Marina Sediments of the Kovin Dunavac (Kovin, Serbia). in The 22nd European Meeting on Environmental Chemistry, EMEC22 - Book of Abstracts, 5 – 8 December, 2022, Ljubljana, Slovenia
Ljubljana, Slovenia : University of Ljubljana Press..
https://hdl.handle.net/21.15107/rcub_cer_6127

Antić KĐ, Kojić I, Šolević Knudsen T. Occurrence, Distribution Pattern and Origin of Polycyclic Aromatic Hydrocarbons in the River Marina Sediments of the Kovin Dunavac (Kovin, Serbia). in The 22nd European Meeting on Environmental Chemistry, EMEC22 - Book of Abstracts, 5 – 8 December, 2022, Ljubljana, Slovenia. 2022;.
https://hdl.handle.net/21.15107/rcub_cer_6127 .

Antić, Katarina Đ., Kojić, Ivan, Šolević Knudsen, Tatjana, "Occurrence, Distribution Pattern and Origin of Polycyclic Aromatic Hydrocarbons in the River Marina Sediments of the Kovin Dunavac (Kovin, Serbia)" in The 22nd European Meeting on Environmental Chemistry, EMEC22 - Book of Abstracts, 5 – 8 December, 2022, Ljubljana, Slovenia (2022),
https://hdl.handle.net/21.15107/rcub_cer_6127 .

TY  - JOUR
AU  - Kojić, Ivan
AU  - Bechtel, Achim
AU  - Aleksić, Nikoleta M.
AU  - Životić, Dragana
AU  - Trifunović, S.
AU  - Gajica, Gordana
AU  - Stojanović, Ksenija
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4530
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 ele-mental 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-pyrol-ysis 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 lig-nite/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 M. and Životić, Dragana and Trifunović, S. and Gajica, Gordana and Stojanović, Ksenija",
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 ele-mental 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-pyrol-ysis 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 lig-nite/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. M., Životić, D., Trifunović, S., Gajica, G.,& Stojanović, K.. (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 NM, 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. in Polymers. 2021;13(5):759.
doi:10.3390/polym13050759 .

Kojić, Ivan, Bechtel, Achim, Aleksić, Nikoleta M., Životić, Dragana, Trifunović, S., Gajica, Gordana, Stojanović, Ksenija, "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 . .

TY  - JOUR
AU  - Medić, Ana
AU  - Lješević, Marija
AU  - Inui, Hideyuku
AU  - Beškoski, Vladimir
AU  - Kojić, Ivan
AU  - Stojanović, Ksenija
AU  - Karadžić, Ivanka
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3576
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 and Karadžić, Ivanka",
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.,& Karadžić, I.. (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 K, Karadžić I. 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, Karadžić, Ivanka, "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 . .