Detoxifying Capacity of Oxidized Humic Substances in Oil-Contaminated Soils

Autor:	E. A. Zakharova, N. A. Likhacheva
Rok vydání:	2021
Předmět:	Phytoremediation Contaminated soils Fuel Technology Chemistry General Chemical Engineering Environmental chemistry Soil water Energy Engineering and Power Technology Bioassay Chemical modification General Chemistry Brown coal complex mixtures
Zdroj:	Chemistry and Technology of Fuels and Oils. 57:487-491
ISSN:	1573-8310 0009-3092
DOI:	10.1007/s10553-021-01271-6
Popis:	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.
Databáze:	OpenAIRE
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