Removal of heavy metal ions from aqueous solutions using chemically (Na2S) treated granular activated carbon as an adsorbent
Removal of Cd(II), Pb(II), Hg(II), Mn(II), Ni(II) and Zn(II) by chemically (Na2S) treated granular activated carbon (GAC)has been found to be concentration, pH, contact time, adsorbent dose and temperature dependent. Adsorption isotherm studiesindicated that adsorptive behaviour of metal ions on chemically treated GAC satisfies Langmuir assumptions.