Development of an adsorbent for Cs removal synthesized by radiation-induced graft polymerization

放射線グラフト重合法によるセシウム除去用捕集材の開発

柴田 卓弥  ; 瀬古 典明; 天田 春代; 笠井 昇; 佐伯 誠一; 保科 宏行; 植木 悠二

Shibata, Takuya; Seko, Noriaki; Amada, Haruyo; Kasai, Noboru; Saiki, Seiichi; Hoshina, Hiroyuki; Ueki, Yuji

It is important task for recovering of Cs from the contaminated area caused by the accident at the Fukushima Daiichi Nuclear Power Station. Therefore, we developed a new grafted Cs adsorbent, which contained a crosslinked structure onto the grafted chains to stabilize the adsorption ligand for applying to a drinking water. As the optimal synthesis condition, 1 mol% of 9G (G: dimethacrylate) which is a type of polyethylene glycol dimethacrylate (PEGDM) was used for Cs adsorbent as a crosslinker. The resultant grafted Cs adsorbent could work to maintain the performance of Cs removal from pH 5.8 to 8.6 without any damage. Finally, the developed Cs adsorbent could use as a filter of a water purifier.