Preparation of metal adsorbent from poly(methyl acrylate)-grafted-cassava starch via irradiation

Suwanmala, P.*; Hemvichian, K.*; 保科 宏行; Srinuttrakul, W.*; 瀬古 典明

Radiation Physics and Chemistry, 81(8), p.982 - 985, 2012/08

https://doi.org/10.1016/j.radphyschem.2011.10.011

Metal adsorbent containing hydroxamic acid groups was successfully synthesized by radiation-induced graft copolymerization of methylacrylate onto cassava starch. The optimum conditions for grafting were studied in terms of % degree of grafting (Dg). Conversion of the ester groups present in poly(methyl acrylate)-grafted-cassava starch copolymer into hydroxamic acid was carried out by treatment with hydroxylamine in the presence of alkaline solution. The adsorbent of 191%Dg had total adsorption capacities of 2.6, 1.5, 1.4, 1.2 and 1.6 mmol/g-adsorbent for Cd, Al, UO, V, and Pb, respectively, in the batch mode adsorption.