Adsorption of Arsenite and Dichromate Ions by Soils of Udmurtia
M. A. SHUMILOVA, V. G. PETROV
Udmurt Federal Research Center, Izhevsk, Russia
Keywords: арсенит-ион, бихромат-ион, адсорбция, изотерма Лэнгмюра, изотерма Фрейндлиха, константы адсорбции, arsenite ion, dichromate ion, adsorption, Langmuir and Freundlich isotherms, adsorption constants
Abstract
By the example of four types of soils of Udmurtia, sorption process by them of arsenic and chromium ions in extremely toxic forms is considered. Langmuir and Freundlich isotherms are constructed based on acquired experimental data and constants pointing to weak adsorption power of soils of the Non-Black Earth Zone in relation to these anions are determined. High solubility of arsenic and chromium species against weak sorption capacity of soils determines environmental risks of active migration of As(III) and Cr(VI) anions along soil profile. Their mobility should be taken into account during environmental monitoring.
DOI: 10.15372/CSD20180115
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