Separation of yttrium in a hollow fiber membrane

Masahiro Goto, Fukiko Kubota, Terufumi Miyata, Fumiyuki Nakashio

Research output: Contribution to journalArticlepeer-review

24 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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