Non-dispersive extraction separation of metals using hydrophilic microporous and cation exchange membranes

Ruey Shin Juang*, Huey Chyng Huang

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

16 Scopus citations

Abstract

Non-dispersive extraction of Zn(II) and Cu(II) from single and binary solutions across a flat-sheet membrane to an organic solution containing di(2-ethylhexyl)phosphoric acid (D2EHPA) was studied. Hydrophilic microporous and cation exchange membranes were used. Experiments were performed as a function of the pH (2-6), metal concentration (0.31-3.13mol/m3), and D2EHPA concentration (50-500mol/m3). It was shown that the presence of one metal retarded the transport of the other. Compared to the hydrophilic microporous membrane, the cation exchange membrane gave a low extraction rate of both metals in either single or binary systems, but gave a higher selectivity of Zn(II) over Cu(II) in binary systems at high D2EHPA concentrations. Copyright (C) 1999 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)179-186
Number of pages8
JournalJournal of Membrane Science
Volume156
Issue number2
DOIs
StatePublished - 30 04 1999
Externally publishedYes

Keywords

  • Cation exchange membrane
  • Copper
  • Di(2-ethylhexyl)phosphoric acid
  • Hydrophilic microporous membrane
  • Non-dispersive extraction separation
  • Zinc

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