BIOSORPTION: A REVIEW ON MECHANISM, ISOTHERMS AND KINETICS

Dr. Naveen Chandra Joshi*

ABSTRACT

The wastewaters of many industries contain heavy metals. A variety of methods have been developed for removal of metal ions from wastewaters such as precipitation, evaporation, electroplating, ion exchange, membrane filtration, carbon adsorption, etc. A variety of waste biological materials have been used as biosorbents for the removal of heavy metal ions from waste waters. The main advantage of biosorption is that it is a cheap and efficient process. This review discuss the mechanism of metal uptake, biosorption technology, the features of biosorption, isotherms and kinetic models to characterize the suitability of biosorption of heavy metals on biosorbents.

Keywords: Heavy metal pollution, Biosorption process, Isotherms, Kinetics of biosorption.