PHYSICAL CHEMISTRY OF WATER TREATMENT PROCESSES: PRODUCTION OF SORBENTS MODIFIED BY POLYPHOSPHATES AND THEIR USE IN REMOVING HEAVY METALLIC IONS FROM WATERS

摘要

Sorbents for removal of ions of heavy metals from aqueous solutions have been developed on the basis of clinoptilolite, alunite, calcium silicate, and hydrotalcite modified with polyphosphates. They have been found to exhibit high sorption capacity and selectivity with respect to Ni~(2+) and to be most effective in removing Ni~(2+) from electroplating sewage.