Removal of metallic trace elements (Pb, Cd, Cu, and Ni) from aqueous solution by adsorption onto cerium oxide modified activated carbon.

The equilibrium and kinetic studies of removal of Pb, Cd, Ni, and Cu metal ions were carried out using activated carbon prepared from palm kernel shell and doped with CeO (Ce/AC). The obtained material carbon was characterized by XRD which showed some crystalline traces of CeO, SEM displaying the porous texture with spherical pores and the determination of pH of point of zero charge (pH) which was found to be equal to 6. The contact time and adsorbate were thoroughly investigated.