Chitosan is the one of the most abundant natural biopolymers after cellulose. The chitosan was converted into chitosan nanoparticles and to improve the adsorption efficiency, the polymers kaolin clay and methyl cellulose has been mixed separately to form the binary composites NC+MC and NC+KC. The prepared composites were characterized. Batch adsorption process was carried out and the effects of various parameters influencing the Pb(II) adsorption such as initial concentration of the metal solution, pH, contact time and adsorbent concentration have been studied. The data obtained from adsorption process was used to fit in Langmuir and Freundlich isotherms. Adsorption kinetics was applied to evaluate the order followed by the process. The second order kinetic model was found to correlate well with the experimental data. Both the prepared composites follow the second order kinetic model.
