Journal of Hazardous Materials, Vol.126, No.1-3, 169-175, 2005
Removal of Cd and Zn from inorganic industrial waste leachate by ion exchange
This paper presents a study of the removal of Cd and Zn present in the leachate from an inorganic industrial waste landfill using cationic exchange resins (Amberlite 200, 252-C, IR-120, Duolite C-464), a chelating resin, Amberlite IRC 718, and an adsorbent resin, XAD-2. The chelating resin Amberlite IRC 718 presented the higher removal in batch experiments for both metals (93% for Zn and 50% for Cd). Five hundred ten bed volumes of leachate were treated in column experiments using this material, reducing the concentrations of Cd and Zn from 18 mg/dm(3) to 0.1 and 1.0 mg/dm(3), respectively. Regeneration of the saturated bed was achieved with 11 BV of 2 M HCl. (c) 2005 Elsevier B.V. All rights reserved.