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Solvent extraction and recovery of Y(III) and Yb(III) from fluorspar mineral

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Abstract

Yttrium and ytterbium were extracted from sulfuric acid medium using triphenylarsine (TPAs) dissolved in kerosene. The influence of different factors, such as shaking time, extractants, metal ions, sulfate ion concentrations, as well as temperature, was studied in detail. From the slope analysis method and IR measurements, the structure of the extracted species was suggested as MSO4(HSO4)·TPAs, where M refers to Y(III) or Yb(III). The equilibrium constants (K ex) and thermodynamic parameters, such as the change in enthalpy (ΔH), free energy (ΔG), and entropy (ΔS), were calculated. The method of extraction and stripping was applied to obtain the aforementioned metals from a sample of fluorspar mineral giving a recovery yield of 88.2% and 83.5% for yttrium and ytterbium, respectively.

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Authors and Affiliations

  1. Hot Laboratories Centre, Atomic Energy Authority, 13759, Cairo, Egypt

    Y. A. El-Nadi, N. E. El-Hefny & H. F. Aly

  2. Faculty of Science, Jazan University, Jazan, 2097, Saudi Arabia

    Y. A. El-Nadi

Authors
  1. Y. A. El-Nadi
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  2. N. E. El-Hefny
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  3. H. F. Aly
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Correspondence to Y. A. El-Nadi.

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El-Nadi, Y.A., El-Hefny, N.E. & Aly, H.F. Solvent extraction and recovery of Y(III) and Yb(III) from fluorspar mineral. Int J Miner Metall Mater 20, 713–719 (2013). https://doi.org/10.1007/s12613-013-0788-2

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  • DOI: https://doi.org/10.1007/s12613-013-0788-2

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