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Minimum Analytical Waste Generation based Analytical Procedures for Studies on the In-situ Electrochemical Partitioning of the PUREX Process |
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PP: 235- 242 |
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doi:10.18576/jrna/050311
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Author(s) |
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S. Ganesh,
N.K.Pandey,
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Abstract |
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| In-situ electrochemical partitioning is a suitable option for the separation of uranium and plutonium from each other for high plutonium content fuels such as FBR fuels. Hence, experimental studies were carried out in a 20-stage electrolytic mixer-settler with uranium solution to evaluate the performance of electrodes and mixer settlers. In the present paper, minimum analytical waste generation based analytical procedures were developed for the determination of the of U(IV), U(VI), nitric acid, hydrazine. A spectrophotometer equipped with a fiber optic probe is used for monitoring of oxidation states and concentration of uranium in both organic and aqueous medium. Acidity and hydrazine concentrations were estimated simultaneously by pH metric method. During the in-situ electrochemical reduction of uranium in the stages of mixer-settler process samples are validated with proper time interval using the procedures as mentioned above. Several experimental runs were carried out with different flow sheet conditions. The obtained results are in good agreement with predicted values. A potentiometric method is used for the determination of higher concentrations of U(VI) and U(IV) in the aqueous and organicphases. |
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