PHYSICOCHEMICAL ADSORPTION TREATMENTS FOR MINIMIZATION OF HEAVY-METALCONTENTS IN WATER AND WASTEWATERS

An attempt has been made to compile various techniques and materials u sed for the adsorption treatment of water and wastewater for minimizat ion/removal of heavy metal contents. One hundred four references have been cited from the literature to cover the work done during 1991 till the end of 96. Various adsorbents have been employed for effective re moval of toxic metals. Treatment methods, viz. by chemical precipitati on/co-precipitation, membrane filtration, ion-exchange have been used along with adsorption. New adsorbent materials have also been recommen ded for the effective treatment of natural and wastewaters.