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Mixer-settler runs with tri-iso-amyl phosphate and tri-n-butyl phosphate for the aqueous reprocessing of U–Zr alloy fuels

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Abstract

In the present study, Tri-iso-amyl Phosphate (TiAP) solvent was examined for the aqueous reprocessing of U–Zr alloy fuels. Solvent extraction studies were carried out with TiAP solvent for the extraction of uranium from U–Zr feed solution in cross-current mode. Mixer-settler runs were carried out with U–Zr feed solutions using 1.1 M TiAP/n-DD and the results were compared with TBP solvent. Quantitative extraction of uranium (> 99.9%) and negligible extraction of zirconium was observed in mixer-settler runs with both TiAP and TBP solvents. Quantitative recovery of uranium (~ 99%) was achieved from the organic phase using 0.01 M HNO3 in 16 and 6 stages, respectively in the case TiAP and TBP systems. The flowsheets employed in the present study are useful for the aqueous reprocessing of U–Zr alloy fuels.

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Authors and Affiliations

  1. Fuel Chemistry Division, Materials Chemistry and Metal Fuel Cycle Group (MC&MFCG), Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, 603102, India

    B. Sreenivasulu, A. Suresh, C. V. S. Brahmananda Rao & N. Sivaraman

  2. Homi Bhabha National Institute, Kalpakkam, 603102, India

    A. Suresh, C. V. S. Brahmananda Rao & N. Sivaraman

Authors
  1. B. Sreenivasulu
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  2. A. Suresh
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  3. C. V. S. Brahmananda Rao
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  4. N. Sivaraman
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Correspondence to B. Sreenivasulu.

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Sreenivasulu, B., Suresh, A., Rao, C.V.S.B. et al. Mixer-settler runs with tri-iso-amyl phosphate and tri-n-butyl phosphate for the aqueous reprocessing of U–Zr alloy fuels. J Radioanal Nucl Chem 330, 1207–1220 (2021). https://doi.org/10.1007/s10967-021-08045-8

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  • DOI: https://doi.org/10.1007/s10967-021-08045-8

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