Extraction of Lithium Ion from Alkaline Aqueous Media by a Liquid Surfactant Membrane.

DOI Web Site 参考文献32件
  • Kinugasa Takumi
    Department of Industrial Chemistry, Niihama National College of Technology
  • Ono Yuri
    Department of Industrial Chemistry, Niihama National College of Technology
  • Kawamura Yuko
    Department of Industrial Chemistry, Niihama National College of Technology
  • Watanabe Kunio
    Department of Industrial Chemistry, Niihama National College of Technology
  • Takeuchi Hiroshi
    Department of Chemical Engineering, Nagoya University

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Extraction of lithium ion from aqueous alkaline media by a liquid surfactant membrane was performed using a mixture of LIX54 and TOPO as the extractant. Stripping of lithium from the kerosene solution to the acid solution was suppressed with increasing content of polyamine (ECA) surfactant. The extraction rate of lithium by the liquid membrane could be interpreted taking account of an interfacial resistance due to ECA. It was confirmed that swelling of the (W/O) emulsion drops by water permeation through the liquid membrane is evaluated in terms of a change in osmotic pressure gradient between the external and internal aqueous phases during the lithium extraction. In the present operation, the extraction ratio of Li+ from the external feed and the uptake into the internal phase reached as high as 95%.

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