3.7. Adsorption capacity
The adsorption capacity of DPC-SBA-15 for cadmium and copper
ions was studied by passing 500 mL portions of aqueous solutions
containing 100 mg of cadmium and copper ions at optimal
pH through the column. This was followed by determination of
the effluent and retained metal ions using FAAS. The capacity of
DPC-SBA-15, obtained for five replicate analyses, was found to
be 198
±
0.01 and 105
±
0.03 mg g−1 of cadmium and copper ions,
respectively.