[18p-E313-1~8] 1.4 Energy conversion, storage, resources and environment

▲ [18p-E313-5] Gamma radiation modified CMC-based hydrogels: Behaviour of heavy metal ion removal from aqueous solution

〇(D)Tran Thu Hong¹, Okabe Hirotaka¹, Hidaka Yoshiki¹, Hara Kazuhiro¹ (1.Kyushu University)

Keywords:Gamma irradiation modification, Hydrogel, Metal adsorption

The presence of different functional groups on modified CMC-based hydrogel showed the clear effect on the metal removal (%), as shown in Fig. 1. For original CMC hydrogel, metal ions in aqueous solution were uptake low, < 50%. However, when introducing of SSS, CMCts and BMEP to CMC backbone, most of metal removed significantly by modified CMC hydrogel (> 50%), especially for Ni and Ag ions. The metal ion selectivity efficiency of each gel might depend on strong ionic groups present on hydrogel network and lead to higher binding affinity with metal ions. Other results will be presented at the meeting.