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Direct dissolution of UO2 and in situ extraction by TBP–HNO3 and TiAP–HNO3 organic solutions at atmospheric pressure

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Abstract

Supercritical CO2 assisted dissolution of metals and metal-oxides and in situ extraction by TBP (or co-solvent) has been reported in literature. However, in this work, the dissolution and in situ extraction by nitric acid solvates of TBP and alternate solvent TiAP has been reported for g-level UO2 (essentially PHWR fuel pellet fragments) feeds at atmospheric pressure without requiring supercritical fluids. Encouraging results were obtained.

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Acknowledgments

Authors sincerely acknowledge the technical assistance provided by Mr. S. Sundaramurthy and Mr. S. Singarvel of RR&DD during conducting the experiments.

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Authors and Affiliations

  1. Reprocessing R&D Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102, India

    Bijendra Kumar, Shekhar Kumar, M. Sampath, D. Sivakumar, U. Kamachi Mudali & R. Natarajan

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  1. Bijendra Kumar
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  2. Shekhar Kumar
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  3. M. Sampath
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  4. D. Sivakumar
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  5. U. Kamachi Mudali
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  6. R. Natarajan
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Correspondence to Shekhar Kumar.

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Kumar, B., Kumar, S., Sampath, M. et al. Direct dissolution of UO2 and in situ extraction by TBP–HNO3 and TiAP–HNO3 organic solutions at atmospheric pressure. J Radioanal Nucl Chem 288, 443–445 (2011). https://doi.org/10.1007/s10967-010-0941-6

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  • DOI: https://doi.org/10.1007/s10967-010-0941-6

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