Persian mesquite grain has been effectively used as a new raw
material for the preparation of activated carbon with high-surface area
and adsorption capacity. The thermodynamic parameters indicated a
spontaneous and exothermic adsorption. The kinetic model analyses
revealed that the experimental data were well fitted to the pseudosecond-order
model. Desorption of Pb2+ could be totally carried out
using nitric acid and Hydrochloric acid. Fe2+ was found to show the
high interfering impact on the process of lead adsorption by activated
carbon. Due to the high adsorption capacity and regeneration capability
the present activated carbon could be successfully used as an excellent
adsorbent in water purification.