Detoxifying Capacity of Oxidized Humic Substances in Oil-Contaminated Soils

Results of a study into the oxidative modification of lignite (brown coal) humic substances of the Tyulgan deposit are presented. The detoxifying effect of the obtained substances on petroleum hydrocarbons is analyzed using a bioassay method. The study indicates a marked increase in the detoxifying...

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Bibliographic Details
Published inChemistry and technology of fuels and oils Vol. 57; no. 3; pp. 487 - 491
Main Authors Likhacheva, N. A., Zakharova, E. A.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.07.2021
Springer
Springer Nature B.V
Subjects
Analysis
Capacity
Chemistry
Chemistry and Materials Science
Ecology
Geotechnical Engineering & Applied Earth Sciences
Humic acid
Humic substances
Industrial Chemistry/Chemical Engineering
Lignite
Mineral Resources
Phytoremediation
Soil contamination
Soils
Sorbents
detoxifying effect
brown coal
oil contamination of soils
oxidation
humic substances
bioassay method
detoxification level
chemical modification
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Summary:Results of a study into the oxidative modification of lignite (brown coal) humic substances of the Tyulgan deposit are presented. The detoxifying effect of the obtained substances on petroleum hydrocarbons is analyzed using a bioassay method. The study indicates a marked increase in the detoxifying capacity of the humic substances associated with their chemical modification. The greatest detoxifying effect on oil-contaminated soils, amounting to 19 and 42% at doses of 0.01 and 0.1 wt%, respectively, is observed for oxidized humic substances. Conversely, the detoxifying effect of unmodified humic substances is significantly lower: 9 and 2 % at doses of 0.01 and 0.1 wt%, respectively. Thus, the viability of using oxidized humic substances as sorbent-detoxifiers during the phytoremediation of oilcontaminated soil is shown.
ISSN:0009-3092
1573-8310
DOI:10.1007/s10553-021-01271-6