Abstract
Regent methods of natural sorbents modification on the basis of opal/ cristobalite rocks have been developed. Optimal reagents for the natural sorbents modification are solutions of sodium hydroxide and sodium chloride. Kinetics of Cu2+ copper extraction from water systems with the modified sorbents has been studied in different conditions: depending on the velocity of stirring, sorbent particle size, and the extracted metal concentration. The conducted research enables to recommend the modified sorbents on the basis of opal/cristobalite rocks for extraction of heavy metals from water systems.
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