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Concentration of europium(III) with supported liquid membrane containing a xylene solution of di-2-ethyihexyl phosphoric acid

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Abstract

The mechanism of europium transport through a supported liquid membrane is presented. The membrane consisted of a Teflon filter membrane with xylene solution of di-2-ethylhexyl phosphoric acid (HDEHP) as a mobile carrier held within the pores by capillary forces. Interposing the liquid membrane between two aqueous solutions of different pH, europium was transported and concentrated from the high pH solution to the low pH solution across the liquid membrane. The experiments were carried out to investigate the effects of the concentration of europium in the aqueous phase and HDEHP concentration in the membrane solution on the permeation rates of europium. The experimental results have been compared with a transport model for concentrating europium across the liquid membrane. The permeation rates of europium can be explained approximately by the diffusion process of the complex formed between europium ion and HDEHP at the membrane interface through the membrane in addition to the diffusion process of europium in the aqueous film adjacent to the membrane interface.

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Authors and Affiliations

  1. Department of Chemical Engineering, University of Osaka Prefecture, Mozu-Umemachi, Sakai, Osaka, Japan

    Tadaaki Nishiki (Lecturer)

  2. Ames Laboratory, USDOE, USA

    Renato G. Bautista (Group Leader, Professor)

  3. Department of Chemical Engineering, Iowa State University, 50011, Ames, IA

    Renato G. Bautista (Group Leader, Professor)

Authors
  1. Tadaaki Nishiki
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  2. Renato G. Bautista
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Formerly Postdoctoral Fellow, Ames Laboratory, USDOE

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Nishiki, T., Bautista, R.G. Concentration of europium(III) with supported liquid membrane containing a xylene solution of di-2-ethyihexyl phosphoric acid. Metall Trans B 14, 25–31 (1983). https://doi.org/10.1007/BF02670865

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  • DOI: https://doi.org/10.1007/BF02670865

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