Rapid separation of actinides using an anion-exchange polymer chain grafted onto a porous sheet

新規な陰イオン交換性シートによるアクチノイド元素の迅速分離

浅井 志保; 間柄 正明  ; 桜井 聡 ; 篠原 伸夫 ; 斎藤 恭一*; 須郷 高信*

Asai, Shiho; Magara, Masaaki; Sakurai, Satoshi; Shinohara, Nobuo; Saito, Kyoichi*; Sugo, Takanobu*

A diethylamino (DEA) group as an anion exchanger was introduced into a polymer chain grafted onto the pore surface of a porous sheet. The resultant porous sheet was cut into disks to fit a cylindrical cartridge (DEA cartridge) and the adsorption-elution behaviors for actinides were investigated. U and Pu in 10 HCl-0.1 HNO were adsorbed on the DEA cartridge, and quantitative recoveries were achieved with 7 HNO and 1 HCl, respectively. The elution curves of Pu with 10 HCl-0.1 HNO and 1 HCl overlapped irrespective of its flow rate. The flow rates of the loading and stripping solutions permeating through the pores of the DEA disk were 6-10 times higher than those through the interstices of an anion-exchange-resin-bead-packed column.