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

Abstract

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 .

In Separation and Purification

“…Similar PE -g -poly(GMA) hollowfi ber membranes activated by iminodiacetation and sulfonation were proposed for the removal of Co 2+ and Cs + [11,194] , and Pd 2+ ions [196] and germanium oxide [197] from effl uents produced by processing spent catalysts and the production of PET, respectively.…”

“…Hollow -fi ber membranes prepared by radiation grafting of GMA onto PE hollow fi bers followed by amination reaction have shown great potential for the removal of Pb 2+ and Pd 2+ ions [194,195] . Similar PE -g -poly(GMA) hollowfi ber membranes activated by iminodiacetation and sulfonation were proposed for the removal of Co 2+ and Cs + [11,194] , and Pd 2+ ions [196] and germanium oxide [197] from effl uents produced by processing spent catalysts and the production of PET, respectively.…”

Introduction of Various Amine Groups onto Poly(glycidyl methacrylate)-g-MWNTs and their Application as Biosensor Supports

“…As GMA is polymerized, the epoxy groups in poly(GMA) can be modified to alcohol, 1 amine, 2 phosphonic acid, 3 sulfonic acid, 4 etc. 5 In our previous works, 6,7 we grafted the GMA onto various polymeric supports in order to introduce an amine group. This amine group can be used as a chilating site for the removal of heavy metal ions such as Pb 2+ and Pd 2+ and for the adsorption of proteins such as urokinase for use as † To whom correspondence should be addressed.…”

Removal of Metal Ions From Aqueous Solutions Using Crosslinked Polyethylene -GTMFJ-Polystyrene Sulfonic Acid Adsorbent Prepared by Radiation Grafting

“…Cation exchange membranes are promising alternative form of chelating resins that can be effectively used for removal of heavy metal ions from water and waste water streams [7]. This is because they are not compressible and can eliminate internal diffusion limitations caused by resins using a flow-by mode [7].…”

“…This is because they are not compressible and can eliminate internal diffusion limitations caused by resins using a flow-by mode [7]. Preparation of these membranes requires grafting of functional ionizable groups such as SO 3 -or COO -on a trunk polymer, which has to be subsequently shaped into a thin foil.…”