Synthesis of New Type Cross-linked Chitosan Porous Resin and the Absorption of Cd(II) and Ni(II)

Abstract

Chitosan is a versatile material, its derivatives has a wide range of applications. Chitosan resin absorption metal ions, becomes a research hotpot in recent years. A new chelating resin using chitosan as a base material was synthesized. Functional moiety of tetraethylenepentamine (TEPA) chemically bonded to the amino group of cross-linked chitosan (CCTS) through the arm of chloromethyloxirane, ethylene glycol diglycidyl ether (EGDE) as the cross linker. The risen was holed by PEG-2000 to get porous-CCTS-TEPA. The amine resin showed a higher affinity towards the uptake of Cd(II) and Ni(II) from neutral solution, where an uptake value of 123.54 mg/g and 262.50 mg/g, porous-CCTS-TEPA uptake value of 220.86 mg/g and 315.0 mg/g respectively at pH 7 and room temperature.