Transformation and synthesis of humic substances during bioremediation of petroleum hydrocarbons

Jednak, Tanja; Avdalović, Jelena; Miletić, Srđan; Slavković-Beškoski, Latinka J.; Stanković, Dalibor M.; Milić, Jelena; Ilić, Mila; Beškoski, Vladimir; Gojgić-Cvijović, Gordana; Vrvić, Miroslav M.

doi:10.1016/j.ibiod.2017.04.009

Cited by 23 publications

(14 citation statements)

References 28 publications

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“…3,7 During bioremediation of sites polluted with petroleum and its derivatives, substances similar to humic compounds are created. 8,9 Wu and colleagues 10 found similar sequential biological processes in composting. This is very important because humic substances (HSs) have a tremendously positive influence on soil quality.…”

Section: Introductionmentioning

confidence: 87%

“…After repeated centrifugation, the supernatant was discarded. The HAs were purified according to International Humic Substance Society and Jednak et al 9 The analysis was performed in triplicate. The error in the method was about 4.50 %.…”

Section: Extraction Of Humic Acidsmentioning

confidence: 99%

“…Absorbances of solution (30.0 mg of HAs in 100 mL of 0.05 M NaHCO 3 ) were recorded using a UV-Vis spectrophotometer (Shimadzu, UV-1280). 9,27,28 Fourier-transform infrared spectroscopy of the isolated humic acids FTIR spectra of HAs were recorded on an FTIR spectrometer (Nicolet 6700 from Thermo Nicolet Corp., Madison, WI, USA), in the wavelength range of 4000-400 cm -1 . The samples were prepared before analysis (making pellets consisting of isolated HAs and KBr).…”

Section: Elemental Analysis Of the Isolated Humic Acidsmentioning

confidence: 99%

“…This is very important because humic substances (HSs) have a tremendously positive influence on soil quality. 9,11,12 HSs, heterogeneous organic macromolecules, are composed of a soil fraction soluble at all pHs -the fulvic acids (FAs), plus humic acids (HAs) that are soluble in neutral to alkaline pHs, and an insoluble fraction -humin. 9,11,12 The essential components of HSs are HAs, and their study is important for understanding many processes in the environment.…”

Section: Introductionmentioning

confidence: 99%

“…9,11,12 HSs, heterogeneous organic macromolecules, are composed of a soil fraction soluble at all pHs -the fulvic acids (FAs), plus humic acids (HAs) that are soluble in neutral to alkaline pHs, and an insoluble fraction -humin. 9,11,12 The essential components of HSs are HAs, and their study is important for understanding many processes in the environment. 13 HAs are composed of quinone, phenolic, enolic and carboxylic acid functional groups, and as a result, they have numerous uses.…”

Section: Introductionmentioning

confidence: 99%

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Evolution of humic acids during ex situ bioremediation on a pilot level: The added value of the microbial activity

Žerađanin

Avdalović

Lješević

et al. 2020

JSCS

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Environmental pollution is a global problem, while bioremediation technology removes pollutants from the environment using microorganisms. This study was aimed at investigating how a bioremediation process affected soil humification. In soil polluted with petroleum and its derivatives that was submitted to bioremediation, besides the total petroleum hydrocarbons and the number of microorganisms, quantitative and qualitative changes of isolated humic acids were determined during the process. The bioremediation of 150 m 3 of polluted soil lasted 150 days. The level of total petroleum hydrocarbons decreased by 86.6 %, while the level of humic acids increased by 26.5 %. The elemental analysis showed the reduction of C and the H/C ratio and the increase of O and the O/C ratio of isolated humic acids during the process. The ratio of absorbencies at 465 and 665 nm also increased. Based on this and the Fourier-transform infrared spectra, it was shown that the humic acids isolated at the end of bioremediation were enriched with oxygen functional groups and aromatic structures. This study provides one of the first insights into the relationship between bioremediation and humification, as well as evidence of how hydrocarbon-degrading microorganisms have a significant influence on changes to humic acid structure during bioremediation.

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Section: Introductionmentioning

confidence: 87%

Section: Extraction Of Humic Acidsmentioning

confidence: 99%

Section: Elemental Analysis Of the Isolated Humic Acidsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Evolution of humic acids during ex situ bioremediation on a pilot level: The added value of the microbial activity

Žerađanin

Avdalović

Lješević

et al. 2020

JSCS

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The Small-Scale Microbial Processes for Remediation of Sediments Contaminated with Hydrocarbons

Lima

Queiroz

Dantas

et al. 2018

Microbial Action on Hydrocarbons

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Evaluation of potential human health risks from exposure to volatile organic compounds in contaminated urban groundwater in the Sava river aquifer, Belgrade, Serbia

Bulatović

Ilić

Knudsen

et al. 2021

Environ Geochem Health

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The oil pollutant in the Sava River aquifer in the residential area of Belgrade, Serbia was investigated in order to analyze the extent, origin and spatial distribution of the pollution, with the aim to estimate potential human health risks from exposure to the compounds detected. Analytical methods indicated that the dominant compounds in this oil pollutant were gasoline range organic compounds. Benzene, toluene, ethylbenzene and xylenes (BTEX) were identified as compounds of concern and quantified by headspace gas chromatography. The concentrations of benzene measured at all sampling points were higher than the remediation value while the maximum concentrations of BTEX quantified were among the highest concentrations of these compounds reported in the petroleum-contaminated aquifers in the world. The assessment of the human health risks from exposure to BTEX-covered industrial scenario for adult receptors and residential scenario for adult receptors and children. The exposure routes analyzed were dermal contact with and ingestion of contaminated water, considering both cancer and non-cancer effects. The analysis of the lifetime incremental cancer risk indicated the potential for adverse health effects for human exposure at the investigated location, and because of that it was interpreted as an unacceptable risk level or risks of high priority which required immediate consideration for remedial measures at this location. A complete set of mitigation measures was proposed including: groundwater decontamination treatment, installation of filters for tap water, development of the system for monitoring of BTEX in the groundwater and development of the emergency response capacities at this location.

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Transformation and synthesis of humic substances during bioremediation of petroleum hydrocarbons

Cited by 23 publications

References 28 publications

Evolution of humic acids during ex situ bioremediation on a pilot level: The added value of the microbial activity

Evolution of humic acids during ex situ bioremediation on a pilot level: The added value of the microbial activity

The Small-Scale Microbial Processes for Remediation of Sediments Contaminated with Hydrocarbons

Evaluation of potential human health risks from exposure to volatile organic compounds in contaminated urban groundwater in the Sava river aquifer, Belgrade, Serbia

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