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dc.creatorJednak, Tanja
dc.creatorAvdalović, Jelena
dc.creatorMiletić, Srđan
dc.creatorSlavkovic-Beskoski, Latinka
dc.creatorStanković, Dalibor
dc.creatorMilić, Jelena
dc.creatorIlić, Mila
dc.creatorBeškoski, Vladimir
dc.creatorGojgić-Cvijović, Gordana
dc.creatorVrvić, Miroslav
dc.date.accessioned2019-01-30T17:56:26Z
dc.date.available2019-01-30T17:56:26Z
dc.date.issued2017
dc.identifier.issn0964-8305
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/2247
dc.description.abstractThe 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.en
dc.publisherElsevier Sci Ltd, Oxford
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/43004/RS//
dc.rightsrestrictedAccess
dc.sourceInternational Biodeterioration & Biodegradation
dc.subjectHumificationen
dc.subjectHumic substancesen
dc.subjectHumic acidsen
dc.subjectBioremediationen
dc.subjectMazuten
dc.titleTransformation and synthesis of humic substances during bioremediation of petroleum hydrocarbonsen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractЈеднак, Тања; Бескоски, Владимир; Aвдаловић, Јелена; Врвиц, Мирослав М.; Станковиц, Далибор; Славковиц-Бескоски, Латинка; Милић, Јелена; Милетић, Срђан; Илић, Мила; Гојгић Цвијовић, Гордана;
dc.citation.volume122
dc.citation.spage47
dc.citation.epage52
dc.citation.other122: 47-52
dc.citation.rankM21
dc.identifier.doi10.1016/j.ibiod.2017.04.009
dc.identifier.rcubConv_3744
dc.identifier.scopus2-s2.0-85018770526
dc.identifier.wos000403858400006
dc.type.versionpublishedVersion


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