Abstract            Volume:4  Issue-6  Year-2016         Original Research Articles

Online ISSN : 2347 - 3215 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcret@gmail.com

Heavy metals, a major category of globally distributed pollutants, discharged by various industries in their effluents, have tendency to accumulate in selected tissues of the human body and their potential to be toxic for all life forms even at relatively minor levels of exposure. Several processing techniques like chemical precipitation, ion exchange, flotation, solvent extraction, adsorption, membrane filtration and dialysis are available to reduce the concentration of heavy metals in wastewater. Adsorption onto various natural and synthetic adsorbents has become well known method for the removal of toxic metal ions. This study gives an account of the role played by adsorption phenomena in reducing heavy metal pollution by using various types of adsorbents. Heavy metals removal efficiencies through various techniques has been studied and found that adsorption is more promising, more efficient, eco-friendly and widely adopted technique in reducing heavy metal pollution. A large number of low cost natural and synthetic adsorbents such as agricultural waste, minerals, clays, activated carbon, sludge and coal ash can be employed in removing heavy metals from wastewater streams.

Download this article as