The activation process results in the creation of a network of fine pores in the carbon particles. The vast areas (300–4000 m2 g1) of the walls within these pores account for the most of the total surface area of the carbon (O’Cooney, 1998). In spite of its prolific use, activated carbon remains an expensive material and the higher the quality of activated carbon, the higher its cost. Also, in practice activated carbon is employed more frequently for adsorption of organic compounds rather than heavy metal ions