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ESTIMATION OF EFFICIENCY OF USING BRUCITE FOR DECONTAMINATION OF ARSENIC CONTAINING WATER

In the paper it is outlined that mining enterprises activity is accompanied with high emissions of arsenic into the hydrosphere. Sorption purification method with application of brucite as natural mineral is proposed. As the arsenic is toxic and demand for it is limited, one of the requirements for removing of the contaminant is its collection into low-toxic and low-soluble sediments to be available for dumping. The analysis of research results is presented. The interaction mechanism of toxic substance with the sorbent is studied. It is shown that sorption includes complex of physical and chemical processes such as electrostatic interaction, ion exchange, chemical interaction of arsenic ions with mineral surface with creation hardly soluble compounds. Tests of sediment stability have been carried out by statistic method. High efficiency of using brucite for decontamination of arsenic containing water is proved.