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Carbonized Sorbents of Shungite and Rice Husk for Purification of Petroleum Contaminated Soils

Ongarbayev Yerdos, Baigulbayeva Moldir, Tileuberdi Yerbol, Ualieva Perizat, Abdieva Gulzhamal

Journal of Ecological Engineering

2022

Vol. 23, nr 5

16--25

Contamination of soil and water with petroleum during its extraction, collection, transportation, storage and preparation occurs frequently, and purification of oil spills is one of the pressing environmental problems of oil producing organizations. There are a large number of methods for utilization oil spills. The sorption method in combination with bioremediation is capable of effectively purification of petroleum contaminated soils. The paper shows the possibility of using a carbonized mixture of shungite from the Koksu deposit (Kazakhstan) with rice husk as a sorbent and carrier of microorganism strains. The physicochemical properties and elemental composition, as well as the microstructure of carbonized samples were established. The maximum sorption capacity of carbonized sorbents when purifying the soil samples from oil from the Karazhanbas field was 1.86 g/g after 60 days. The carbonized samples with microorganism strains immobilized on them showed a degree of oil destruction reaching 90%.