FIELD: chemistry.
SUBSTANCE: process is carried out in the presence of acid organic sorbent with subsequent extracting a sorbent by filtering through a filter or by centrifugation and subsequent decantation of the precipitate. The sorption reaction proceeds under static conditions with the acidity of the medium pH=3÷0.1. As a sorbent, the sorbent N-2-(2-pyridyl) ethyl chitosan is used. The process is carried out at a phase ratio of T:H=1:500, and as the medium, during extraction of rhenium, an acetate buffer solution is used from a mixture of NaOH and CH3COOH.
EFFECT: increasing the degree of extraction of perrhenate ions from water with a high degree of recovery and high kinetic characteristics.
3 dwg, 1 tbl, 3 ex
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