DEVELOPMENT OF SOLUTIONS FOR THE REMEDIATION OF SOILS CONTAMINATED WITH HEAVY METALS IN THE WASTEWATER TREATMENT AREA
Authors
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E.N. Abdulova
M. Auezov South Kazakhstan Research University, Shymkent, Kazakhstan
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U.G. Kanatbek
M.Kh. Dulaty Taraz University, Taraz, Kazakhstan
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E.K. Reimbayev
M.Kh. Dulaty Taraz University, Taraz, Kazakhstan
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A.A. Kurtebayeva
M.Kh. Dulaty Taraz University, Taraz, Kazakhstan
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A.M. Serikbayeva
M. Auezov South Kazakhstan Research University, Shymkent, Kazakhstan
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S.A. Orynbayev
M.Kh. Dulaty Taraz University, Taraz, Kazakhstan
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T.G. Helder
Polytechnic Institute of Bragança, Bragança, Portugal
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M.S. Kalmakhanova
M.Kh. Dulaty Taraz University, Taraz, Kazakhstan
DOI:
https://doi.org/10.55956/TDCX3105Keywords:
biochar, pyrolysis, soil, atomic emission spectroscopy, FTIR, heavy metals, elemental analysis, scanning electron microscopyAbstract
Soil contamination with heavy metals is one of the most urgent environmental problems faced by modern society. Therefore, the aim of this study is to remediate soils contaminated with heavy metals (Ni and Pb) using biochar and to evaluate the effect of biochar on soil properties. Agricultural wastes (sugar beet pulp and chicken manure) were used as raw materials for biochar production. Biochar was obtained through a pyrolysis process at 450°C for 1 hour. The physicochemical properties of the obtained biochar (FTIR, SEM) were analyzed. A soil contamination modeling process was conducted: a Pb(NO₃)₂ solution with a concentration of 200 mg/L was prepared and introduced into 500 g of soil, after which biochar from sugar beet pulp was added at rates of 1%, 5%, and 10%. After a 30-day incubation period, elemental analysis showed changes in the concentration of heavy metals. The effect of biochar on soil was additionally evaluated by planting maize.
