Extraction of copper from ammoniacal solution using impregnated amberlite XAD-7 resin loaded with LIX-54

Extraction of Cu2+ ion from ammoniacal solution by solvent impregnated resin was investigated. Amberlite XAD-7 was used as a polymeric support for impregnation with LIX-54. The extraction of copper was carried out at different extraction time, pH of medium, extractant concentration, resin weight, volume of metal ion solution, concentration of ammoniacal solution and concentration of metal ion. The percent uptake at equilibrium was found to be 95.5%. From sorption kinetic modeling studies, the pseudo-second order model is more applicable for the sorption process with high correlation coefficient (R > 0.99). Langmuir and Freundlich isotherms were tested for sorption process. The stripping studies were carried out using different concentrations of H2SO4. The stripping ratio was found to be 97.8%. All experimental data indicate that, impregnated amberilte XAD-7 with LIX-54 can be used as an efficient sorbent for removal of copper from ammoniacal solution.