Comparison studies of adsorption properties for copper ions in fuel ethanol and aqueous solution using silica-gel functionalized with 3-amino-1,2-propanediol

Silica-gel functionalized with 3-amino-1,2-propanediol (SG-AP) was used as adsorbent for the removal of copper ions from both aqueous and ethanol solutions. The adsorption isotherms and adsorption kinetics were comparatively investigated by using batch method. The static saturated adsorption amount for Cu2+ in ethanol is less than that in aqueous, indicating a much lower adsorption rate. The experimental data were fitted to pseudo-first-order...