As mentioned previously, physical properties and the surface
morphology of activated carbons influence the adsorption capacity.
Chestnut shell activated carbon has more porosed structure and
higher surface area than grapeseed activated carbon (Table 4) and
so, it has more adsorption capacity in comparison with grapeseed
activated carbon (Tables 6 and 7). Fig. 6(a) also shows that the chestnut
shell activated carbon had a porosed and high surface area. This
observation is supported by the BET surface area (1319m2/g) and from Fig. 6(b), after the copper removal fromsolutionwas achieved
the surface of activated carbonwascompletely coveredwith copper
ions
iodine number (785 mg/g) of the activated carbon. As can be seen