Removal of Heavy Metal from Wastewater: A Review of current Treatment Processes

Currently Heavy metal contamination has become one of the most serious environmental threat. The treatment of heavy metals is of special anxiety due to their recalcitrance and persistence in the environment. In recent years, multiple methods for heavy metal exclusion from wastewater have been comprehensively developed. This paper reviews the existing procedures that have been used to treat heavy metal wastewater and evaluates these techniques. These technologies include membrane filtration, ion- exchange, electroless nickel plating, rinse water treatment and Sayong ball chemical method. About 62 published studies (1972-2015) are reviewed in this paper. It is marked from the literature survey articles that ion-exchange and membrane filtration are the most frequently studied for the treatment of heavy metal wastewater. Copyright © 2016 Penerbit Akademia Baru - All rights reserved.