Abstract
The sorption ability of an aluminosilicate sorbent prepared from clay-salt slimes (Belaruskalii production waste, Belarus) was studied. The 137Cs sorption is the most efficient at pH 2.5-10.5. At the sorbent dosage of 4 g dm3 and sorption time of 1 h, the degree of the 137Cs sorption from aqueous solution is 98.8%. The sorbent performance in the 137Cs removal is mainly determined by the kind (Na+, K+, Ca2+) and concentrations of macrocomponents in surface and groundwater. The aluminosilicate sorbent selectively takes up 137Cs from an aqueous solution in the presence of Na+ and Ca2+ cations, but in the presence of K+ cations the selective sorption of 137Cs is observed at K+ concentrations lower than 1 mM.
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