The Removal Efficiency of Cadmium (Cd2+) and Lead (Pb2+) from Aqueous Solution by Graphene Oxide (GO) and Magnetic Graphene Oxide (α-Fe2O3/GO)

Facile Preparation of Magnetic CuFe2O4 on Sepiolite/GO Nanocomposites for Efficient Removal of Pb(II) and Cd(II) from Aqueous Solution

“…For the Pb­(II) case, a slight increase in the adsorption capacity was observed in the single-metal system compared to the binary system whereas Cd­(II) adsorption was noticeably higher in the single-ion system. A possible explanation for this is that CFSG favors Pb­(II) adsorption over Cd­(II) in the binary system . Therefore, once Pb­(II) is excluded, i.e., in the single Cd­(II) system, the CFSG adsorption sites are solely available for Cd­(II).…”

“…Therefore, the CFSG nanocomposite with more functional groups is expected to have higher adsorption capacity. 36 3.3. Binary and Single Metal Systems.…”

“…It is worth mentioning that the functional groups of the adsorbents (Figure ) could be related to their adsorption capacities. Therefore, the CFSG nanocomposite with more functional groups is expected to have higher adsorption capacity …”

“…A possible explanation for this is that CFSG favors Pb(II) adsorption over Cd(II) in the binary system. 36 Therefore, once Pb(II) is excluded, i.e., in the single Cd(II) system, the CFSG adsorption sites are solely available for Cd(II). It is worth mentioning that in real wastewater, the coexisting other ions (e.g., Ca 2+ , Na + , Mg 2+ ) in water would alter the adsorption process as they compete with the adsorbate over the adsorption sites.…”