Removal of Cadmium from Water Using Clinoptilolite

Abstract

The present study examined the use of clinoptilolite for the removal of cadmium from aqueous solutions. The effects of pH and contact time on the adsorption process were examined. The optimum pH for adsorption was found to be 5.0. A decrease in the clinoptilolite concentration with a constant cadmium concentration or an increase in the cadmium concentration with a constant clinoptilolite concentration, increased cadmium loading per unit weight of the adsorbent. As a result, the maximum removal efficiency levels obtained were as follows; 95.32 % for the clinoptilolite at pH 5.0 and contact time 15 min.