含Fe等杂质溶液中TODGA树脂对Am吸附性能研究  

Study on Adsorption Properties of Am in Solution Containing Impurities by TODGA Resin

作　　者：王学彬 毛国淑[1] 符之海 周今 张先 于圣洁 郑若晨 Wang Xuebin;Mao Guoshu;Fu Zhihai;Zhou Jin;Zhang Xian;Yu Shengjie;Zheng Ruochen(China Institute of Atomic Energy,P.O.Box 275(126),Beijing 102413,China)

机构地区：[1]中国原子能科学研究院放射化学研究所,北京102413

出　　处：《广东化工》2022年第6期45-48,共4页Guangdong Chemical Industry

摘　　要：采用浸渍法合成了TODGA-JZC树脂并进行表征,研究了接触时间、硝酸浓度、金属离子杂质含量等对TODGA-JZC、TODGA-JZF树脂吸附Am(Ⅲ)的影响以及Eu静态容量。结果表明:两种TODGA树脂均具有较好的耐酸性;两种树脂对^(241)Am吸附分配比随接触时间的增加而升高,60 min趋于平衡;Fe等金属离子杂质(0~20 g/L)对241Am的吸附分配比影响较小;随着硝酸浓度的升高,241Am的吸附分配比增加,4 mol/L硝酸时TODGA-JZC和TODGA-JZF树脂对^(241)Am的吸附分配比分别为6.8×10^(4)和1.2×10^(5)mL/g;在4 mol/L HNO_(3)、1 mg/mL Eu体系中,TODGA-JZC、TODGA-JZF树脂对Eu的静态容量分别为18 mg/mL、9 mg/mL。TODGA-JZC resin was synthesized by impregnation method and characterized.The influences of contact time,nitric acid concentration and impurity metal ion concentration on the adsorption of Am(Ⅲ)and the static capacity of Eu with TODGA-JZC and TODGA-JZF resins were studied.The results show that both of two kinds of TODGA resins have good acid resistance.The distribution coefficient of ^(241)Am with two kinds of resins increases with the increase of contact time,and the adsorption of ^(241)Am reaches equilibrium within 60 min.Metal ion impurities(0~20 g/L)have little influence on the distribution coefficient of ^(241)Am,including Fe^(3+).The distribution coefficient of ^(241)Am with TODGA-JZC and TODGA-JZF resins that increases with the increase of concentration of initial nitric acid is 6.8×10^(4) and 1.2×10^(5) mL/g at 4 mol/L nitric acid,respectively.The static capacity of Eu with TODGA-JZC and TODGA-JZF resins is 18 mg/mL and 9 mg/mL,respectively,under the condition of 4 mol/L HNO_(3) and 1 mg/mL Eu.

关 键 词：TODGA 树脂 AM EU 吸附 

分 类 号：TQ[化学工程]