Adsorption of Pb2+ and Pd2+ on polyethylene membrane with amino group modified by radiation-induced graft copolymerization

✍ Scribed by Seong-Ho Choi; Young Chang Nho; Geug-Tae Kim

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 230 KB
• Volume: 71
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19990124)71:4<643::aid-app16>3.0.co;2-8

✦ Synopsis

Six chelating hollow fiber membranes were prepared by radiation-induced grafting of glycidyl methacrylate onto a polyethylene hollow fiber membrane and its subsequent amination. The adsorption characteristics of Pb 2ϩ and Pd 2ϩ for the chelating hollow fiber membranes were presented when the solution of Pb 2ϩ and Pd 2ϩ permeates across the chelating membrane, respectively. The degree of grafting for glycidyl methacrylate increases with increasing monomer concentration, reaction temperature, and preirradiation dose. The adsorption of Pd 2ϩ by chelating hollow fiber membranes modified with five kinds of amines was in the following order: diethylene triamine Ͼ hexamethyl diamine Ͼ ethylene diamine Ͼ dimethyl amine Ͼ trimethyl amine. The chelating hollow fiber membrane modified with iminodiacetic acid adsorbed Pb 2ϩ ions much more than Pd 2ϩ .