Регенерация насыщенного ионита после сорбционного извлечения шестивалентного хрома из сбросных вод хромового производства

Abstract

The process of hexavalent chromium recovery by various eluents from saturated anion exchange resin Purolite A500/4994 was investigated. The desorption process was most efficiently carried out using ammonium chloride solutions (100 g·L-1) with the addition of ammonia (1-5%) or sodium chloride solutions (100 g·L-1) with the addition of sodium hydroxide (10-50 g·L-1). The degree of chromium recovery is 98-99%.