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.
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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 3, pp. 53–56, May–June, 2021.
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Likhacheva, N.A., Zakharova, E.A. Detoxifying Capacity of Oxidized Humic Substances in Oil-Contaminated Soils. Chem Technol Fuels Oils 57, 487–491 (2021). https://doi.org/10.1007/s10553-021-01271-6
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DOI: https://doi.org/10.1007/s10553-021-01271-6