Evaluation of permselectivity of a liquid anion-exchange membrane by diffusion dialysis

Toshihiko Imato, Hei Ichiro Yabu, Shigeharu Morooka, Yasuo Kato

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The permselectivity of liquid anion-exchange membrane containing high molecular weight amines to some organic and inorganic anions was evaluated by diffusion dialysis. The relative ion exchange constant of the membrane solution was determined by a solvent extraction procedure. The apparent diffusivity of several ion pairs through a supported liquid membrane was determined by the time lag method. The permselectivity to the anions was approximately consistent with the Hofmeister anion series and it was correlated with the diffusivity of ion pairs in the membrane and the relative ion exchange constant at the membrane-solution interface. The relative ion exchange constant was found to be the dominant factor in permselectivity. The concentration profile of ion pairs in a stack of liquid membranes was linear with the distance at steady state.

元の言語英語
ページ(範囲)21-33
ページ数13
ジャーナルJournal of Membrane Science
10
発行部数1
DOI
出版物ステータス出版済み - 1 1 1982

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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