BIOSORPTION OF HEAVY METALS USING THE AGRO WASTE BIOMASS

摘要

Heavy metals pollution of wastewater has become an important issue with respect to the environmental and human health. Biosorption, using the agro waste materials is observed as the low-cost and eco-friendly method for removal of heavy metals from wastewater. This paper promotes the biosorption process as a potential alternative to the conventional methods for t removal of heavy metals from wastewater. The biosorption capacity of different agro waste materials has been also discussed with focus to the operating parameters, which affected the biosorption process. Mechanisms involved in biosorption of heavy metals from wastewater include the ion exchange, chemisorption, microprecipitation, complexation and chelatation.