REMEDIATION OF SOILS CONTAMINATED WITH Cd2+ IONS BY ZOO COMPOST AFTER CULTIVATION OF HERMETIA ILLUCENS FLY LARVAE

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 34-45 p.
One of the most toxic substances entering the soil due to anthropogenic impact is cadmium (Cd). When growing agricultural plants on soils contaminated with cadmium, it is possible for cadmium to enter the human body through food chains, which can cause numerous disturbances in the work of various body systems. In order to reduce the adverse effects of heavy metals on environmental objects, soil remediation is necessary. One of the types of remediation is a decrease in the mobility of pollutants and a decrease in their activity. In this paper, the possibil-ity of reducing the mobility of Cd2+ ions by adding zoo compost to contaminated soils after cultivating larvae of the “Black Soldier” fly (Hermetia illucens) was investigated. It was found that the content of Cd2+ ions in the mobile form in soils with the addition of zookompost significantly decreases compared to the control (up to 73.3% with a zookompost content of 2.5%). The sorption capacity of the zoo compost with respect to Cd2+ ions was determined, which is 0.12 mmol/g. The resulting sorption isotherm was processed within the framework of the monomolecular sorption models of Langmuir, Freundlich, Dubinin-Radushkevich. The values of sorption energy and Gibbs energy are calculated, the values of which indicate the course of spontaneous physical adsorption with chemisorption ele-ments.
Keywords:
soils, remediation, cadmium ions, zoo compost, chelate complexes
Sverguzova S.V.
Doctor of Engineering Sciences (Advanced Doctor), Professor, Belgorod State Technological University named after V.G. Shukhov
Shaykhiev I.G.
Doctor of Engineering Sciences (Advanced Doctor), Head of the Department, Kazan National Research Technological University
Pendyurin E.A.
Candidate of Agricultural Sciences (Ph.D.), Associate Professor, Belgorod State Technological University named after V.G. Shukhov
Sapronova Zh.A.
Doctor of Engineering Sciences (Advanced Doctor), Professor, Belgorod State Technological University named after V.G. Shukhov
Bomba I.V.
Master Student, Belgorod State Technological University named after V.G. Shukhov
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