Research of the toxicants sorption-diffusion migration from the accumulated industrial arsenic wastes along the soil profile

Prospects Mining and Metallurgy Industry Development

Kachor, O.L.^1 ; Bogdanov, A.V.^1

Irkutsk National Research Technical University, Russia^1

关键词: Ecological consequences;    Environmental damage;    Organic-mineral complexes;    Remediation methods;    Sorption capacities;    Sorption properties;    Sparingly soluble salt;    Technical universities;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/229/1/012027/pdf
DOI  :  10.1088/1755-1315/229/1/012027

来源: IOP

【 摘 要 】

With the account of the accumulated environmental damage caused by the mining processing industrial wastes in the country, there is an urgent need in developing a concept for eliminating the related social and ecological consequences. The article presents the research of the sorption properties of the soil in Svirsk that has been long subject to the arsenic wastes pollution. As a result, the ground sorption capacity has been defined for different occurrence depth grounds. It has been found that the ground of 2 to 9 m thick is an important geological lock preventing arsenic and heavy metal penetration in the underlying aquifers. A remediation method for the soils polluted with arsenic and heavy metals has been suggested, which uses an organic-mineral complex developed by Irkutsk National Research and Technical University (INRTU). While interacting with the toxicants, the complex increases the toxicants mobility, facilitating their transfer from the hard soil into the liquid phase and further migration along the soil profile in the form of organic complexes, fine-dispersed suspension and sparingly soluble salts, being absorbed by the clay lock.