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Extraction and separation of Zr, Nb and Hf by Aliquat 336 and its mixtures with TOPO from acidic thiocyanate media

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Abstract

Presence of thiocyanate ions results in appreciable extraction of Zr(IV) by Aliquat 336 from low aqueous HCl acidities, i.e., 0.1 to 4.5M. The variation of concentrations of HCl, thiocyanate and Aliquat 336 greatly influences the extent of extraction. Mixtures of Aliquat 336 and TOPO result in synergistic extraction of Zr and Hf from acidic thiocyanate media, the extracted species being the disolvate with TOPO. By controlled adjustment of HCl, SCN− and Aliquat 336 concentrations, separation of Zr, Nb and Hf is possible. A maximum separation factor (DNb/DZr) of 3675 has been achieved under certain conditions.

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Authors and Affiliations

  1. Department of Chemistry, Utkal University, Vani Vihar, 751 004, Bhubaneswar, (India)

    P. K. Mishra, V. Chakra Vortty & K. C. Dash

  2. Nuclear Chemistry Division, Saha Institute of Nuclear Physics, Bidhan Nagar, 700 064, Calcutta, (India)

    N. R. Das & S. N. Bhattacharyya

Authors
  1. P. K. Mishra
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  2. V. Chakra Vortty
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  3. K. C. Dash
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  4. N. R. Das
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  5. S. N. Bhattacharyya
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Mishra, P.K., Chakra Vortty, V., Dash, K.C. et al. Extraction and separation of Zr, Nb and Hf by Aliquat 336 and its mixtures with TOPO from acidic thiocyanate media. Journal of Radioanalytical and Nuclear Chemistry, Articles 162, 289–298 (1992). https://doi.org/10.1007/BF02035390

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  • DOI: https://doi.org/10.1007/BF02035390

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