Rare earth metals sorption recovery from uranium in situ leaching process solutions
Rare earth metals sorption recovery from uranium in situ leaching process solutions
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DOI：
10.1007/s12598-014-0237-z
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发表时间：
2015-03
期刊：
影响因子：
8.8
通讯作者：
N. Shokobayev;C. Bouffier;T. S. Dauletbakov
中科院分区：
文献类型：
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作者：
N. Shokobayev;C. Bouffier;T. S. Dauletbakov
研究了001×7、005×8、D 72型离子交换树脂在动态条件下从铀贫液中萃取稀土金属的吸附特性。结果表明，D 72树脂对REM的吸附容量为2.46 mg·cm-3，吸附容量为220 BV（床体积），REM元素的回收率为95%。研究了1.7mol·L-1HNO 3和8.0mol·L-1 NH 4 NO3溶液在0.2mol·L-1HNO 3通过下，REM从所研究的离子交换树脂上的动态脱附。经鉴定，使用基于硝酸铵的解吸溶液允许从树脂实现可接受的REM回收程度。组织循环解吸溶液系统的可能性增加了硝酸铵溶液使用的前景。
Sorption characteristics of ion exchange resins 001×7, 005×8, D72 regarding rare earth metals (REM) during extraction from barren solution of uranium sorption in dynamic conditions were investigated. It was identified that D72 resin capacity on analyzed REM was 2.46 mg·cm−3after passing 220 BV (bed volume) of initial solution with 95 % recovery of element of REM with the lowest affinity. Researches on REM desorption in dynamic conditions from investigated ion exchange resins by solution of 1.7 mol·L−1HNO3and 8.0 mol·L−1NH4NO3with 0.2 mol·L−1HNO3passing were carried out. It was identified that using desorption solution based on ammonium nitrate allows to achieve acceptable recovery degree of REM from the resin. The possibility of organization of a circulating desorption solution system increases the perspectives of nitrate ammonium solution usage.