Removal of some heavy metals by mordenite

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Abstract
Metal removal capability by an aluminosilicate, mordenite, was investigated. Type of metal, pH, and surface loading are the most important factors controlling metal removal by mordinate. The extent of removal follows the order of Pb > Cd > Zn. Ion exchange is the most important mechanism for metal removal by mordenite at pH < 7. In the presence of ligands, metal removal capability is affected by the extent of metal complexation. Hence, there is no effect on metal removal in the presence of equal molar concentration of weak ligand such as glycine. Strong complex former such as EDTA significantly impedes metal removal by mordenite.