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Presence of heavy metals in water bodies due to industrialization has led to serious health problems. In the present study, an adsorbent prepared from the raw bark of the Pongamia pinnata tree was used for the removal of Lead from aqueous and waste water containing heavy metals. The effectiveness of this adsorbent was studied in batch studies for various size fractions of adsorbent at different pH, concentration of metal ion, amount of adsorbent, contact time, agitation and temperature. The pseudo-first-order, pseudo-second-order and Elovich models were applied to test the kinetic experimental data. Pseudo second order model best fitted the adsorption of Lead ions. The Langmuir and Freundlich adsorption isotherm models were applied for the results. The Langmuir isotherms were best fitted by the equilibrium data. The maximum adsorption was found to be 34.36mg/g in waste water at a temperature of 30 0 C.

Kinetics and Mechanism for Adsorption of Lead in Aqueous and Industrial Effluent from Pongamia pinnata Tree Bark