However, the living cell is subject to toxic effects of the heavy metals, resulting in cell death. Moreover, living cell often requires the addition of nutrients and hence increase the BOD (Biochemical Oxygen Demand) and COD(Chemical Oxygen Demand) in the effluent. For these reasons,the use of non-living biomaterials or dead cells as metal binding compounds has been gaining advantage because toxic ions do not affect them. In addition, dead require less care and maintenance, and is cheaper