Recovery of plutonium from carbonate wash solutions |
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Authors: | P Govindan S Sukumar K S Vijayan G Santhosh Kumar S Ganesh Pradeep Kumar Sharma K Dhamodharan R V Subba Rao M Venkataraman and R Natarajan |
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Institution: | (1) Reprocessing Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102, Tamil Nadu, India |
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Abstract: | A novel method has been developed for recovery of plutonium and uranium from carbonate wash solutions generated during solvent
wash process involved in the reprocessing of high burn up FBTR fuel. The proposed method involves a selective coprecipitation
of Pu and U by adding ammonium hydroxide to the pre acidified carbonate wash solution. Substantial removal of DBP by successive
steps of coprecipitation, completely eliminates the possibility of undesired solid formation which is mainly due to the presence
of high content of DBP. By adopting this method, an excellent decontamination factor for DBP has been achieved without any
crud/solid formation. Phosphate content in the final oxide product meets the product specifications. Flowsheet condition necessary
for the recovery process for plutonium from the aqueous carbonate solution is formulated and adopted in the CORAL facility. |
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