Separation of rare earth metals in a hollow-fiber membrane extractor modified by plasma-graft polymerization

Masahiro Goto, Terufumi Miyata, Kazuya Uezu, Tisato Kajiyama, Fumiyuki Nakashio, Toshihide Haraguchi, Kenji Yamada, Shunsuke Ide, Chiaki Hatanaka

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A hollow-fiber membrane extractor was prepared by plasma-graft polymerization. The plasma-graft polymerization technique made it possible to modify the surface of a porous hollow-fiber membrane of poly(tetrafluoroethylene) with a polyacrylamide layer. The thickness of the layer can be controlled by the concentration of a monomer and the plasma treatment time. The surface morphology of the grafted layer was analyzed with scanning electron microscopy (SEM) and electron spectroscopy for chemical analysis (ESCA). The results of the surface analysis revealed that the grafted layer covered completely the surface of a membrane. It was confirmed that the grafted layer of polyacrylamide can adsorb rare earth metals. Separation of rare earth metals was conducted in a hollow-fiber membrane extractor modified by plasma-graft polymerization. When the surface-modified membrane was used, the separation factor of erbium to yttrium increased by the interaction between the grafted membrane and the metal ions. It was found that the hollow-fiber membrane modified by plasma-graft polymerization was very useful as a separator for rare earth metals.

Original languageEnglish
Pages (from-to)299-307
Number of pages9
JournalJournal of Membrane Science
Volume96
Issue number3
DOIs
Publication statusPublished - Dec 12 1994

Fingerprint

Rare Earth Metals
Grafts
Polymerization
Rare earths
hollow
rare earth elements
polymerization
membranes
Membranes
Transplants
Plasmas
fibers
Fibers
Metals
metals
Polyacrylates
Erbium
Yttrium
Photoelectron Spectroscopy
Electron spectroscopy

All Science Journal Classification (ASJC) codes

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

Cite this

Separation of rare earth metals in a hollow-fiber membrane extractor modified by plasma-graft polymerization. / Goto, Masahiro; Miyata, Terufumi; Uezu, Kazuya; Kajiyama, Tisato; Nakashio, Fumiyuki; Haraguchi, Toshihide; Yamada, Kenji; Ide, Shunsuke; Hatanaka, Chiaki.

In: Journal of Membrane Science, Vol. 96, No. 3, 12.12.1994, p. 299-307.

Research output: Contribution to journalArticle

Goto, M, Miyata, T, Uezu, K, Kajiyama, T, Nakashio, F, Haraguchi, T, Yamada, K, Ide, S & Hatanaka, C 1994, 'Separation of rare earth metals in a hollow-fiber membrane extractor modified by plasma-graft polymerization', Journal of Membrane Science, vol. 96, no. 3, pp. 299-307. https://doi.org/10.1016/0376-7388(94)00142-1
Goto, Masahiro ; Miyata, Terufumi ; Uezu, Kazuya ; Kajiyama, Tisato ; Nakashio, Fumiyuki ; Haraguchi, Toshihide ; Yamada, Kenji ; Ide, Shunsuke ; Hatanaka, Chiaki. / Separation of rare earth metals in a hollow-fiber membrane extractor modified by plasma-graft polymerization. In: Journal of Membrane Science. 1994 ; Vol. 96, No. 3. pp. 299-307.
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