TY  - JOUR
AU  - Hamidović, Saud
AU  - Gojgić-Cvijović, Gordana
AU  - Waisi, Hadi K.
AU  - Životić, Ljubomir
AU  - Janković-Šoja, Svjetlana
AU  - Raičević, Vera
AU  - Lalević, Blažo
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5380
AB  - Surface mining activities, despite their benefits, lead to the deterioration of local and regional environmental quality and play a role in global ecosystem pollution. This research aimed to estimate the culturable microbial population structure at five locations near the opencast coal mine "Kakanj" (Bosnia and Herzegovina) via agar plate and phospholipid fatty acids (PLFA) method and to establish its relationship to the physical and chemical properties of soil. Using the ICP-OES method, the heavy metal pollution of all examined locations (overburden, former grass yard, forest, arable soil, and greenhouse) was observed. Substantial variations among the sites regarding the most expressed indicators of heavy metal pollution were noted; Cr, Pb, Ni, and Cu content ranged from 63.17 to 524.47, 20.57 to 349.47, 139.13 to 2785.67, and 25.97 to 458.73 mg/kg, respectively. In the overburden sample, considerable low microbial activity was detected; the bacterial count was approximately 6- to 18-fold lower in comparison with the other samples. PLFA analysis showed the reduction of microbial diversity, reflected through the prevalence of normal and branched saturated fatty acids, their ratio (ranged from 0.92 to 7.13), and the absence of fungal marker 18:2 omega 6 fatty acid. The principal component analysis showed a strong negative impact of heavy metals Na and B on main microbial and PLFA profiles. In contrast, stock of main chemical parameters, including Ca, K, Fe, and pH, was positively correlated with the microbial community structure.
PB  - Springer, Dordrecht
T2  - Environmental Monitoring and Assessment
T1  - Response of microbial community composition in soils affected by coal mine exploitation
IS  - 6
VL  - 192
DO  - 10.1007/s10661-020-08305-2
ER  - 

@article{
author = "Hamidović, Saud and Gojgić-Cvijović, Gordana and Waisi, Hadi K. and Životić, Ljubomir and Janković-Šoja, Svjetlana and Raičević, Vera and Lalević, Blažo",
year = "2020",
abstract = "Surface mining activities, despite their benefits, lead to the deterioration of local and regional environmental quality and play a role in global ecosystem pollution. This research aimed to estimate the culturable microbial population structure at five locations near the opencast coal mine "Kakanj" (Bosnia and Herzegovina) via agar plate and phospholipid fatty acids (PLFA) method and to establish its relationship to the physical and chemical properties of soil. Using the ICP-OES method, the heavy metal pollution of all examined locations (overburden, former grass yard, forest, arable soil, and greenhouse) was observed. Substantial variations among the sites regarding the most expressed indicators of heavy metal pollution were noted; Cr, Pb, Ni, and Cu content ranged from 63.17 to 524.47, 20.57 to 349.47, 139.13 to 2785.67, and 25.97 to 458.73 mg/kg, respectively. In the overburden sample, considerable low microbial activity was detected; the bacterial count was approximately 6- to 18-fold lower in comparison with the other samples. PLFA analysis showed the reduction of microbial diversity, reflected through the prevalence of normal and branched saturated fatty acids, their ratio (ranged from 0.92 to 7.13), and the absence of fungal marker 18:2 omega 6 fatty acid. The principal component analysis showed a strong negative impact of heavy metals Na and B on main microbial and PLFA profiles. In contrast, stock of main chemical parameters, including Ca, K, Fe, and pH, was positively correlated with the microbial community structure.",
publisher = "Springer, Dordrecht",
journal = "Environmental Monitoring and Assessment",
title = "Response of microbial community composition in soils affected by coal mine exploitation",
number = "6",
volume = "192",
doi = "10.1007/s10661-020-08305-2"
}

Hamidović, S., Gojgić-Cvijović, G., Waisi, H. K., Životić, L., Janković-Šoja, S., Raičević, V.,& Lalević, B.. (2020). Response of microbial community composition in soils affected by coal mine exploitation. in Environmental Monitoring and Assessment
Springer, Dordrecht., 192(6).
https://doi.org/10.1007/s10661-020-08305-2

Hamidović S, Gojgić-Cvijović G, Waisi HK, Životić L, Janković-Šoja S, Raičević V, Lalević B. Response of microbial community composition in soils affected by coal mine exploitation. in Environmental Monitoring and Assessment. 2020;192(6).
doi:10.1007/s10661-020-08305-2 .

Hamidović, Saud, Gojgić-Cvijović, Gordana, Waisi, Hadi K., Životić, Ljubomir, Janković-Šoja, Svjetlana, Raičević, Vera, Lalević, Blažo, "Response of microbial community composition in soils affected by coal mine exploitation" in Environmental Monitoring and Assessment, 192, no. 6 (2020),
https://doi.org/10.1007/s10661-020-08305-2 . .

TY  - JOUR
AU  - Kekez, Branka
AU  - Gojgić-Cvijović, Gordana
AU  - Jakovljević, Dragica
AU  - Pavlović, Vladimir
AU  - Beskoski, Vladimir
AU  - Popović, Aleksandar
AU  - Vrvić, Miroslav M.
AU  - Nikolić, Vladimir
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4034
AB  - Novel macromolecular graft copolymers were synthesized by reaction of the hydroxyl groups of the microbial polysaccharide levan, produced using Bacillus licheniformis, with polystyrene (Lev-g-PS). Synthesis was performed by the free radical reaction using potassium persulfate (PPS) as initiator. The prepared copolymer was characterized by FTIR, SEM, TG/DTA, XRD and C-13 NMR. The influence of the different conditions (reaction temperature, air or nitrogen atmosphere, reaction time, type of amines and ascorbic acid (AA) concentration) on the grafting reaction was investigated. Results showed that maximum percentage of grafting (58.1%) was achieved at a reaction temperature 70 degrees C, in a nitrogen atmosphere and using dimethylethanolamine (DMEA) as the amine activator. On the basis of the obtained results, the likely reaction mechanism was proposed. Synthesized copolymers have better thermal stability in comparison with their initial components. Copolymers such as Lev-g-PS could potentially have many applications, such as compatibilizers and material for membranes.
PB  - Elsevier Sci Ltd, Oxford
T2  - Carbohydrate Polymers
T1  - Synthesis and characterization of a new type of levan-graft-polystyrene copolymer
EP  - 29
SP  - 20
VL  - 154
DO  - 10.1016/j.carbpol.2016.08.001
ER  - 

@article{
author = "Kekez, Branka and Gojgić-Cvijović, Gordana and Jakovljević, Dragica and Pavlović, Vladimir and Beskoski, Vladimir and Popović, Aleksandar and Vrvić, Miroslav M. and Nikolić, Vladimir",
year = "2016",
abstract = "Novel macromolecular graft copolymers were synthesized by reaction of the hydroxyl groups of the microbial polysaccharide levan, produced using Bacillus licheniformis, with polystyrene (Lev-g-PS). Synthesis was performed by the free radical reaction using potassium persulfate (PPS) as initiator. The prepared copolymer was characterized by FTIR, SEM, TG/DTA, XRD and C-13 NMR. The influence of the different conditions (reaction temperature, air or nitrogen atmosphere, reaction time, type of amines and ascorbic acid (AA) concentration) on the grafting reaction was investigated. Results showed that maximum percentage of grafting (58.1%) was achieved at a reaction temperature 70 degrees C, in a nitrogen atmosphere and using dimethylethanolamine (DMEA) as the amine activator. On the basis of the obtained results, the likely reaction mechanism was proposed. Synthesized copolymers have better thermal stability in comparison with their initial components. Copolymers such as Lev-g-PS could potentially have many applications, such as compatibilizers and material for membranes.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Carbohydrate Polymers",
title = "Synthesis and characterization of a new type of levan-graft-polystyrene copolymer",
pages = "29-20",
volume = "154",
doi = "10.1016/j.carbpol.2016.08.001"
}

Kekez, B., Gojgić-Cvijović, G., Jakovljević, D., Pavlović, V., Beskoski, V., Popović, A., Vrvić, M. M.,& Nikolić, V.. (2016). Synthesis and characterization of a new type of levan-graft-polystyrene copolymer. in Carbohydrate Polymers
Elsevier Sci Ltd, Oxford., 154, 20-29.
https://doi.org/10.1016/j.carbpol.2016.08.001

Kekez B, Gojgić-Cvijović G, Jakovljević D, Pavlović V, Beskoski V, Popović A, Vrvić MM, Nikolić V. Synthesis and characterization of a new type of levan-graft-polystyrene copolymer. in Carbohydrate Polymers. 2016;154:20-29.
doi:10.1016/j.carbpol.2016.08.001 .

Kekez, Branka, Gojgić-Cvijović, Gordana, Jakovljević, Dragica, Pavlović, Vladimir, Beskoski, Vladimir, Popović, Aleksandar, Vrvić, Miroslav M., Nikolić, Vladimir, "Synthesis and characterization of a new type of levan-graft-polystyrene copolymer" in Carbohydrate Polymers, 154 (2016):20-29,
https://doi.org/10.1016/j.carbpol.2016.08.001 . .

TY  - JOUR
AU  - Novaković, Milan
AU  - Ramadan, Muftah Mohamed Ali
AU  - Šolević-Knudsen, Tatjana
AU  - Antić, Mališa
AU  - Beskoski, Vladimir
AU  - Gojgić-Cvijović, Gordana
AU  - Vrvić, Miroslav M.
AU  - Jovančićević, Branimir
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2977
AB  - Phenanthrene and methyl-phenanthrenes are major aromatic pollutants originating in particular from fuel oil. Phenanthrene is usually degraded faster than methyl-phenanthrenes under geological and environmental conditions. Here, we report a preferential and accelerated biodegradation of methyl-phenanthrenes versus phenanthrene in soil contaminated by fuel oil. The polluted soil was mixed with sawdust and sand to form a homogenized biopile. The biopile was continuously sprayed with microbial consortia isolated from crude oil-contaminated soil and treated by biosurfactants and nutritive substances for biostimulation. During a 6-month bioremediation experiment, a steady increase in the relative abundance of phenanthrene compared to methyl-phenathrenes was observed by gas chromatography-mass spectrometry. The increase was the highest for trimethyl-phenanthrenes, with a phenanthrene/trimethyl-phenanthrenes ratio increasing from 0.42 to 2.45. By contrast, the control, non-stimulated samples showed a ratio decrease from 0.85 to 0.11. Moreover, the results showed that the level of degradability depends on the number of methyl groups.
PB  - Springer Heidelberg, Heidelberg
T2  - Environmental Chemistry Letters
T1  - Degradation of methyl-phenanthrene isomers during bioremediation of soil contaminated by residual fuel oil
EP  - 294
IS  - 3
SP  - 287
VL  - 10
DO  - 10.1007/s10311-012-0354-6
ER  - 

@article{
author = "Novaković, Milan and Ramadan, Muftah Mohamed Ali and Šolević-Knudsen, Tatjana and Antić, Mališa and Beskoski, Vladimir and Gojgić-Cvijović, Gordana and Vrvić, Miroslav M. and Jovančićević, Branimir",
year = "2012",
abstract = "Phenanthrene and methyl-phenanthrenes are major aromatic pollutants originating in particular from fuel oil. Phenanthrene is usually degraded faster than methyl-phenanthrenes under geological and environmental conditions. Here, we report a preferential and accelerated biodegradation of methyl-phenanthrenes versus phenanthrene in soil contaminated by fuel oil. The polluted soil was mixed with sawdust and sand to form a homogenized biopile. The biopile was continuously sprayed with microbial consortia isolated from crude oil-contaminated soil and treated by biosurfactants and nutritive substances for biostimulation. During a 6-month bioremediation experiment, a steady increase in the relative abundance of phenanthrene compared to methyl-phenathrenes was observed by gas chromatography-mass spectrometry. The increase was the highest for trimethyl-phenanthrenes, with a phenanthrene/trimethyl-phenanthrenes ratio increasing from 0.42 to 2.45. By contrast, the control, non-stimulated samples showed a ratio decrease from 0.85 to 0.11. Moreover, the results showed that the level of degradability depends on the number of methyl groups.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Environmental Chemistry Letters",
title = "Degradation of methyl-phenanthrene isomers during bioremediation of soil contaminated by residual fuel oil",
pages = "294-287",
number = "3",
volume = "10",
doi = "10.1007/s10311-012-0354-6"
}

Novaković, M., Ramadan, M. M. A., Šolević-Knudsen, T., Antić, M., Beskoski, V., Gojgić-Cvijović, G., Vrvić, M. M.,& Jovančićević, B.. (2012). Degradation of methyl-phenanthrene isomers during bioremediation of soil contaminated by residual fuel oil. in Environmental Chemistry Letters
Springer Heidelberg, Heidelberg., 10(3), 287-294.
https://doi.org/10.1007/s10311-012-0354-6

Novaković M, Ramadan MMA, Šolević-Knudsen T, Antić M, Beskoski V, Gojgić-Cvijović G, Vrvić MM, Jovančićević B. Degradation of methyl-phenanthrene isomers during bioremediation of soil contaminated by residual fuel oil. in Environmental Chemistry Letters. 2012;10(3):287-294.
doi:10.1007/s10311-012-0354-6 .

Novaković, Milan, Ramadan, Muftah Mohamed Ali, Šolević-Knudsen, Tatjana, Antić, Mališa, Beskoski, Vladimir, Gojgić-Cvijović, Gordana, Vrvić, Miroslav M., Jovančićević, Branimir, "Degradation of methyl-phenanthrene isomers during bioremediation of soil contaminated by residual fuel oil" in Environmental Chemistry Letters, 10, no. 3 (2012):287-294,
https://doi.org/10.1007/s10311-012-0354-6 . .