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Separation of uranium from thorium on cryptomelane-type hydrous manganese dioxide

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Abstract

The distribution of UO 2+2 and Th4+ in nitric acid media on crypomelane-type hydrous manganese dioxide (CRYMO) has been investigated by batch equilibrations and column break-through techniques. The parameters studied involve the media composition and concentrations of HNO3, NaNO3, UO 2+2 and Th4+. It is found that Th4+ is more strongly adsorbed on CRYMO than UO 2+2 with sufficient differences for chromatographic separation from each other. Uranium was quantitatively eluted from a CRYMO column with 0.1M HNO3. Th4+ has been recovered by using ≥ 1M HNO3 as eluent.

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Authors and Affiliations

  1. Radioisotope Production and Labelled Compounds Department, Atomic Energy Establishment, P.O. Code 13759, Cairo, (Egypt)

    M. A. El Absy

  2. Nuclear Chemistry Department, Nuclear Research Centre, Atomic Energy Establishment, P.O. Code 13759, Cairo, (Egypt)

    I. M. El Naggar & M. M. Abdel Hamid

  3. Hot Laboratory Centre, Atomic Energy Establishment, P.O. Code 13759, Cairo, (Egypt)

    H. F. Aly

Authors
  1. M. A. El Absy
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  2. I. M. El Naggar
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  3. M. M. Abdel Hamid
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  4. H. F. Aly
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El Absy, M.A., El Naggar, I.M., Hamid, M.M.A. et al. Separation of uranium from thorium on cryptomelane-type hydrous manganese dioxide. Journal of Radioanalytical and Nuclear Chemistry, Articles 172, 145–153 (1993). https://doi.org/10.1007/BF02040671

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  • DOI: https://doi.org/10.1007/BF02040671

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