Extraction of palladium by liquid surfactant membranes using new surfactants

Takahiko Kakoi, Masahiro Goto, Kazuo Kondo, Fumiyuki Nakashio

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    24 Citations (Scopus)


    Using novel synthetic surfactants, the extraction of palladium(II) by liquid surfactant membranes (LSM) containing didodecylmonothiophosphoric acid as a carrier was conducted in a stirred cell. The role of the surfactants on the extraction behavior of palladium by the LSMs was systematically studied. It was found that the stability of the emulsion and the permeation rate of palladium are strongly influenced by the surfactants used. The effects of the surfactant, extractant, internal hydrogen ion and thiourea (stripping reagent) concentrations on the palladium extraction are discussed. The presence of thiourea in the internal aqueous phase is a key factor in palladium extraction with an LSM. Extraction of more than 95% could be attained in a few minutes under optimum surfactant and carrier concentrations.

    Original languageEnglish
    Pages (from-to)249-258
    Number of pages10
    JournalJournal of Membrane Science
    Issue number3
    Publication statusPublished - Oct 14 1993

    All Science Journal Classification (ASJC) codes

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


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