SORPTION OF COPPER(II) IONS BY BISMUTHOL I IMMOBILIZED ON NATURAL ZEOLITE

摘要

A sorbent for extraction of heavy metals from solutions is prepared by immobilization of bismuthol I on natural zeolite.The optimum conditions of sorption of copper(II) ions are found.Under static conditions (pH_(opt) 5),the phase contact time for achievement of balance is 140 min.Under dynamic conditions,the influence of the solvent nature,the way of impregnation of zeolite by a solution of bismuthol I,and the concentration of copper ions on sorption is shown.It is established that copper desorption by thermal processing of sorbent at 500 deg C brings about less than 10% loss of copper.