Separation of yttrium in a hollow fiber membrane

Masahiro Goto, Fukiko Kubota, Terufumi Miyata, Fumiyuki Nakashio

    Research output: Contribution to journalArticlepeer-review

    25 Citations (Scopus)


    Separation of yttrium (Y) from the heavy rare earth metals holmium (Ho) and erbium (Er) with 2-ethylhexylphosphonic acid mono-2-ethyhexyl ester as extractant was carried with a hollow fiber membrane extractor. The extraction mechanism was elucidated and the experimental results could be explained by a diffusion model with an interfacial reaction. Further, new synergistic reagents, oil-soluble surfactants of polyaminocarboxylic acid alkylderivatives, have been developed for the selective separation of rare earth metals. The selectivity of Y to heavy rare earth metals was enhanced by addition of a small amount of EDTA-oleylderivative.

    Original languageEnglish
    Pages (from-to)215-221
    Number of pages7
    JournalJournal of Membrane Science
    Issue number3
    Publication statusPublished - Nov 4 1992

    All Science Journal Classification (ASJC) codes

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


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