Use of chemically modified sawdust in the removal of Pb(II) ions from aqueous media

The sorption of Pb(II) on polymerized sawdust has been found to be dependent on contact time, concentration, temperature, article size and pH. Maximum removal of 98.6 percent with 2.0 g/L of sorbent was observed at 10.0 mg/L sorbate concentration, 6.0 pH and 60°C. The process follows first order kinetics with diffusion , controlled nature and the equilibrium data fit well with the Langmuir and Freundlich isotherms.