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Selective adsorption of 99Tc and recovery of lanthanides at different acidity by PS-TMMA resin with double functional groups

Zu Jianhua,Pan Xiaohan,Han Gang,Xue Yi,Diao Jingjie,Liu Siyu

A novel resin (PS-TMMA) with double functional groups exhibited high adsorption selectivity toward 99 TcO 4 − from the coexisting fission products (Sr, Eu, Dy, Cs) in 0.1–1 mol/L HCl. On the contrary, in neutral medium K d of PS-TMMA resin towards lanthanide elements was much higher than Tc. The results of column chromatography showed that light lanthanide was firstly penetrated on the column. Using 0.01 mol/L 2-hydroxyisobutyric acid as eluent, the adsorbed lanthanides could be effectively eluted at pH 3.03, and the light and heavy lanthanides were partially separated in effluents.