ADSORPTION OF ARSENATE ION BY Fe, Pb AND Ag-EXCHANGED FORMS OF CLINOPTILOLITE

Document Type: Regular Paper

Author

Department of Chemistry, University of Isfahan, I. R. of Iran

Abstract

Experiments were set up to estimate the effectiveness of clinoptilolite for the removal of
arsenate from aqueous solutions. The removal of arsenate by the exchanged forms was analyzed in the
light of the Langmuir model of adsorption. A kinetic study of adsorption was carried out at different
intervals of time, and the Kad values were calculated by using Lagergren’s equation. Adsorption of
arsenate proceeds through the formation of arsenate precipitates.

Keywords