Comparative Study on the Treatment of Leachate from a Mine Waste Dump with Two Agricultural Biowastes

Mining waste dumps are present all over the world. One of main problems of these solid deposits is migration heavy metals in them due to the aqueous solutions flowing through them. The comparison removal of heavy from an solution a real mining leachate under different conditions by two different agricultural wastes has been investigated. effect pH, contact time and dosage was studied using coffee grounds (CG) walnut shells (WS), without pretreatment. results obtained study showed potential use CG WS for metals, although coffee best adsorbents than the walnut shell.