Biosorption of Lead (II) and Zinc(II) Ions by Pretreated Bio-mass of Phanerochaete Chrysosporium

Biosorption of heavy metals can be an effective process for the removal of heavy metal ions from aqueous solutions. In this study, the adsorption properties of nonliving (boiling in NaOH) biomass of phanerochaete chrysosporium. For Pb (II) and Zn (II) were investigated by using batch adsorption techniques. The effects of initial metal ion concentration, initial pH, biosorbent concentration, stirring speed, effect of temperature and contact time on biosorption efficiency were studied. Experimental results indicated that the uptake capacity and adsorption yield of one metal ion were reduced by the presence of the other metal ion. In the experiments the optimum pH value was found out 6.0. The experimental adsorption data were fitted to the Langmuir and Frundlich adsorption models. The highest metals uptake was calculated for Zn (II) and Pb (II) were 57 and 87 respectively. desorption of heavy metal ions was performed by 50 mM HNO3 solution. The results indicated that the biomass of p.chrysosporium is a suitable biosorbent for removing heavy metals ion from aqueous solution.