Applied Chemistry, Vol.2, No.1, 28-31, May, 1998
Adsorption of Co2+ in the presence of Na1+ and Ca2+ by Polyethylene Membrane with Iminodiacetic Acid Group
The chelating hollow fiber membranes were prepared by radiation-induced grafting of glycidyl methacrylate (GMA) onto a polyethylene hollow fiber membrane and its subsequent iminodiacetation. The adsorption characteristics of Co2+ for the chelating hollow fiber membranes were examined when the solution of Co2+ in the presence of Na1+ and Ca2+ permeated across the chelating membrane, respectively. The degree of grafting for GMA increased with increasing monomer concentration, reaction temperature, and pre-irradiation dose. The adsorption curves of Co2+ by IDA-chelating fiber membrane in the presence of Na1+ and Ca2+ showed that the chelating hollow was found to have a very high selectivity far Co2+ even though there was a high concentration of Na1+ and Ca2+ in the inlet solution