Sorption of Non-Ferrous Metals on Amorphous Titanium Phosphate

Abstract

The results of research of the sorption behavior of non-ferrous metal ions (Zn 2+ , Co 2+ , Cd 2+ и Pb 2+ ions ) on amorphous titanium phosphate, with TiO(OH)(H 2 PO 4 ) 2 ·H 2 O chemical composition are presented. According to the adsorption isotherms the maximum sorption capacity was found to be (mg/g): Co 2+ –66.1; Zn 2+ –73.5; Cd 2+ –179.1; Pb 2+ –403.6. Mesoporous structure of the sorbent provides the high sorption kinetics and uptake of studied ions occurs up to 15 min. The presents of strongly acid functional groups in the sorbent matrix governs its successful operation under acid conditions. Simulated and real sewage multicomponent solution were tested and shown that titanium phosphate is a promising material for toxic metal removal. The chemical composition of purified water meets the requirements of the MPC for natural water.