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AssigneeChina Institute of Atomic Energy
InventorsQian LIU, Liyang ZHU, Xuan HAO, Youshi LAN, Jin ZHOU, Suliang YANG, Guoxin TIAN, Qin CHEN, Guoguo ZHANG
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A method for treating retained plutonium in a waste organic phase of a plutonium uranium reduction extraction (PUREX) process is provided. The waste organic phase of the PUREX process contains an organic solvent and plutonium, and the method includes contacting the waste organic phase of the PUREX process with an aqueous back extraction solution containing 2,6-pyridinedicarboxylic acid for back extraction to obtain a plutonium back extraction product; and the plutonium in the back extraction solution may be loaded onto the column for adsorption, transformation and desorption by an anion exchange column, ultimately recovering plutonium in the back extraction solution.
A method for treating retained plutonium in a waste organic phase of a plutonium uranium reduction extraction (PUREX) process, the waste organic phase of the PUREX process containing an organic solvent and plutonium, wherein the method comprises contacting the waste organic phase of the PUREX process with an aqueous back extraction solution containing 2,6-pyridinedicarboxylic acid for back extraction to obtain a back extraction product.
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