TY  - JOUR
AU  - Jednak, Tanja
AU  - Avdalović, Jelena
AU  - Miletić, Srđan
AU  - Slavković-Beškoski, Latinka J.
AU  - Stanković, Dalibor M.
AU  - Milić, Jelena
AU  - Ilić, Mila
AU  - Beškoski, Vladimir P.
AU  - Gojgić-Cvijović, Gordana
AU  - Vrvić, Miroslav M.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1611
AB  - The aim of this paper was to investigate whether changes in the quantity and structure of humic acids (HA) occur during bioremediation of waste mazute (heavy residual fuel oil). The effects of humification on the structure of HA were evaluated by Fourier Transform Infrared Spectroscopy (FT-IR), potentiometric titrations, the ratio of absorbances at 465 and 665 nm (E4/E6 ratio) and the ratio. Also, the quality of humification was monitored by determining parameters which are important for measuring the evolution of humic substances (HS), such as CHA/CFA (the humic acidifulvic acidratio), the rate of extraction (TE) and the index of polymerization (IP). An increase of the content of HA from 0.23% to 0.70% was observed during the bioremediation process. The FT-IR spectra and 04 ratio of HA extracted at the beginning and the end of the process indicate structural changes during the bioremediation process. The groups containing aromatic and carboxylic carbon increased, resulting in HA structures of higher aromaticity. An increase of the B4/E6 ratio during bioremediation treatment implied the enrichment of HA with functional oxygen groups. Potentiometric titrations of HA solution showed increases in the buffering and the redox capacities of HA during the bioremediation process. The results of parameters of humification showed an increase of the compositional carbon in HA at the end, compared to at the start, of bioremediation, while the carbon that belonged to fulvic acids (FA) reduced by 44%. Transformation into HA is the likely cause of this observed reduction. The TE and the IP demonstrated that humification occured during the bioremediation process. According to the available data, this is the first report on synthesis of HS during bioremediation of petroleum hydrocarbons. (C) 2017 Published by Elsevier Ltd.
T2  - International Biodeterioration and Biodegradation
T1  - Transformation and synthesis of humic substances during bioremediation of petroleum hydrocarbons
VL  - 122
SP  - 47
EP  - 52
DO  - 10.1016/j.ibiod.2017.04.009
ER  - 

@article{
author = "Jednak, Tanja and Avdalović, Jelena and Miletić, Srđan and Slavković-Beškoski, Latinka J. and Stanković, Dalibor M. and Milić, Jelena and Ilić, Mila and Beškoski, Vladimir P. and Gojgić-Cvijović, Gordana and Vrvić, Miroslav M.",
year = "2017",
abstract = "The aim of this paper was to investigate whether changes in the quantity and structure of humic acids (HA) occur during bioremediation of waste mazute (heavy residual fuel oil). The effects of humification on the structure of HA were evaluated by Fourier Transform Infrared Spectroscopy (FT-IR), potentiometric titrations, the ratio of absorbances at 465 and 665 nm (E4/E6 ratio) and the ratio. Also, the quality of humification was monitored by determining parameters which are important for measuring the evolution of humic substances (HS), such as CHA/CFA (the humic acidifulvic acidratio), the rate of extraction (TE) and the index of polymerization (IP). An increase of the content of HA from 0.23% to 0.70% was observed during the bioremediation process. The FT-IR spectra and 04 ratio of HA extracted at the beginning and the end of the process indicate structural changes during the bioremediation process. The groups containing aromatic and carboxylic carbon increased, resulting in HA structures of higher aromaticity. An increase of the B4/E6 ratio during bioremediation treatment implied the enrichment of HA with functional oxygen groups. Potentiometric titrations of HA solution showed increases in the buffering and the redox capacities of HA during the bioremediation process. The results of parameters of humification showed an increase of the compositional carbon in HA at the end, compared to at the start, of bioremediation, while the carbon that belonged to fulvic acids (FA) reduced by 44%. Transformation into HA is the likely cause of this observed reduction. The TE and the IP demonstrated that humification occured during the bioremediation process. According to the available data, this is the first report on synthesis of HS during bioremediation of petroleum hydrocarbons. (C) 2017 Published by Elsevier Ltd.",
journal = "International Biodeterioration and Biodegradation",
title = "Transformation and synthesis of humic substances during bioremediation of petroleum hydrocarbons",
volume = "122",
pages = "47-52",
doi = "10.1016/j.ibiod.2017.04.009"
}

Jednak, T., Avdalović, J., Miletić, S., Slavković-Beškoski, L. J., Stanković, D. M., Milić, J., Ilić, M., Beškoski, V. P., Gojgić-Cvijović, G.,& Vrvić, M. M.. (2017). Transformation and synthesis of humic substances during bioremediation of petroleum hydrocarbons. in International Biodeterioration and Biodegradation, 122, 47-52.
https://doi.org/10.1016/j.ibiod.2017.04.009

Jednak T, Avdalović J, Miletić S, Slavković-Beškoski LJ, Stanković DM, Milić J, Ilić M, Beškoski VP, Gojgić-Cvijović G, Vrvić MM. Transformation and synthesis of humic substances during bioremediation of petroleum hydrocarbons. in International Biodeterioration and Biodegradation. 2017;122:47-52.
doi:10.1016/j.ibiod.2017.04.009 .

Jednak, Tanja, Avdalović, Jelena, Miletić, Srđan, Slavković-Beškoski, Latinka J., Stanković, Dalibor M., Milić, Jelena, Ilić, Mila, Beškoski, Vladimir P., Gojgić-Cvijović, Gordana, Vrvić, Miroslav M., "Transformation and synthesis of humic substances during bioremediation of petroleum hydrocarbons" in International Biodeterioration and Biodegradation, 122 (2017):47-52,
https://doi.org/10.1016/j.ibiod.2017.04.009 . .

TY  - JOUR
AU  - Beškoski, Vladimir P.
AU  - Takemine, Shusuke
AU  - Nakano, Takeshi
AU  - Slavković-Beškoski, Latinka J.
AU  - Gojgić-Cvijović, Gordana
AU  - Ilić, Mila
AU  - Miletic, Srdjan
AU  - Vrvić, Miroslav M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5512
AB  - Perfluoroalkyl sulfonates (PFSAs) and perfluoroalkyl carboxylates (PFCAs) were analyzed in sediment samples from the wastewater canal draining the industrial complex of Pancevo, Serbia (oil refinery, petrochemical plant, and fertilizer factory). The canal is directly connected to Europes second largest river, the Danube, which drains its water into the Black Sea. Perfluorooctane sulfonate (PFOS) up to 5.7 ng d(-1) weight (dw) and total Perfluorinated compounds (PFCs) up to 6.3 ng g(-1) dw were detected. Compared to other reports, high levels of PFOS were found, even though PFCs are not used in the industrial production associated with this canal. The PFOS concentration in water was recalculated using the adsorption coefficient, K-oc from literature. Using the average output of wastewater from the canal, a mass load of 1.38 kg PFOS per year discharged in the Danube River has been calculated, which undoubtedly points to the contribution to global persistent organic pollution of surface waters originating from this industrial place. (C) 2013 Elsevier Ltd. All rights reserved.
T2  - Chemosphere
T1  - Perfluorinated compounds in sediment samples from the wastewater canal of Pancevo (Serbia) industrial area
VL  - 91
IS  - 10
SP  - 1408
EP  - 1415
DO  - 10.1016/j.chemosphere.2012.12.079
ER  - 

@article{
author = "Beškoski, Vladimir P. and Takemine, Shusuke and Nakano, Takeshi and Slavković-Beškoski, Latinka J. and Gojgić-Cvijović, Gordana and Ilić, Mila and Miletic, Srdjan and Vrvić, Miroslav M.",
year = "2013",
abstract = "Perfluoroalkyl sulfonates (PFSAs) and perfluoroalkyl carboxylates (PFCAs) were analyzed in sediment samples from the wastewater canal draining the industrial complex of Pancevo, Serbia (oil refinery, petrochemical plant, and fertilizer factory). The canal is directly connected to Europes second largest river, the Danube, which drains its water into the Black Sea. Perfluorooctane sulfonate (PFOS) up to 5.7 ng d(-1) weight (dw) and total Perfluorinated compounds (PFCs) up to 6.3 ng g(-1) dw were detected. Compared to other reports, high levels of PFOS were found, even though PFCs are not used in the industrial production associated with this canal. The PFOS concentration in water was recalculated using the adsorption coefficient, K-oc from literature. Using the average output of wastewater from the canal, a mass load of 1.38 kg PFOS per year discharged in the Danube River has been calculated, which undoubtedly points to the contribution to global persistent organic pollution of surface waters originating from this industrial place. (C) 2013 Elsevier Ltd. All rights reserved.",
journal = "Chemosphere",
title = "Perfluorinated compounds in sediment samples from the wastewater canal of Pancevo (Serbia) industrial area",
volume = "91",
number = "10",
pages = "1408-1415",
doi = "10.1016/j.chemosphere.2012.12.079"
}

Beškoski, V. P., Takemine, S., Nakano, T., Slavković-Beškoski, L. J., Gojgić-Cvijović, G., Ilić, M., Miletic, S.,& Vrvić, M. M.. (2013). Perfluorinated compounds in sediment samples from the wastewater canal of Pancevo (Serbia) industrial area. in Chemosphere, 91(10), 1408-1415.
https://doi.org/10.1016/j.chemosphere.2012.12.079

Beškoski VP, Takemine S, Nakano T, Slavković-Beškoski LJ, Gojgić-Cvijović G, Ilić M, Miletic S, Vrvić MM. Perfluorinated compounds in sediment samples from the wastewater canal of Pancevo (Serbia) industrial area. in Chemosphere. 2013;91(10):1408-1415.
doi:10.1016/j.chemosphere.2012.12.079 .

Beškoski, Vladimir P., Takemine, Shusuke, Nakano, Takeshi, Slavković-Beškoski, Latinka J., Gojgić-Cvijović, Gordana, Ilić, Mila, Miletic, Srdjan, Vrvić, Miroslav M., "Perfluorinated compounds in sediment samples from the wastewater canal of Pancevo (Serbia) industrial area" in Chemosphere, 91, no. 10 (2013):1408-1415,
https://doi.org/10.1016/j.chemosphere.2012.12.079 . .