High-speed recovery of antimony using chelating porous hollow-fiber membrane

Shin Ya Nishiyama, Kaori Saito*, Kyoichi Saito*, Kazuyuki Sugita, Katsuyuki Sato, Mitsuo Akiba, Tomonori Saito, Satoshi Tsuneda, Akira Hirata, Masao Tamada, Takanobu Sugo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)


A porous hollow-fiber membrane containing an iminodiethanol (IDE) group as the chelate-forming group was applied to the recovery of antimony in the permeation mode. An antimony solution was forced to permeate through the pores of the chelating porous hollow-fiber membrane, driven by a transmembrane pressure. The membrane with a thickness of 0.7mm and a porosity of 70% had an iminodiethanol group of 1.6mol/kg of the membrane and a water flux of 0.95m/h at 0.1MPa and 298K. The breakthrough curves of antimony overlapped irrespective of the permeation rate of the antimony solution ranging from 2 to 20ml/min, i.e. the residence time across the membrane thickness ranging from 3.4 to 0.34s, because of negligible diffusional mass-transfer resistance of the ionic species of antimony to the iminodiethanol group. At antimony concentrations below 10mg/l (pH 4.0), a linear adsorption isotherm was obtained. The adsorbed antimony was quantitatively eluted by permeation of 2M hydrochloric acid through the pores of the membrane.

Original languageEnglish
Pages (from-to)275-281
Number of pages7
JournalJournal of Membrane Science
Issue number2
Publication statusPublished - 2003 Apr 1


  • Antimony
  • Chelating porous membrane
  • Hollow-fiber
  • Iminodiethanol group

ASJC Scopus subject areas

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


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