Effects of Aliquat 336 Concentration and Solvent Composition on Amount of Aliquat 336 Impregnated and Liquid Permeability of Aliquat 336-Impregnated Porous Hollow-Fiber Membrane

• Asai Shiho

  Department of Applied Chemistry and Biotechnology, Chiba University Division of Environment and Radiation Sciences, Japan Atomic Energy Agency

• Watanabe Kazuo

  Division of Environment and Radiation Sciences, Japan Atomic Energy Agency

• Sugo Takanobu

  Environment Purification Research Institute Co.

• Saito Kyoichi

  Department of Applied Chemistry and Biotechnology, Chiba University

Bibliographic Information

Other Title

• Aliquat 336 担持多孔性中空糸膜の担持量と液透過性に及ぼす Aliquat 336 濃度と溶媒組成の効果
• Aliquat 336タントクタコウセイ チュウクウシ マク ノ タンジリョウ ト エキ トウカセイ ニ オヨボス Aliquat 336 ノウド ト ヨウバイ ソセイ ノ コウカ

Abstract

A basic extractant Aliquat 336 dissolved in a mixture of water and ethanol was impregnated to carboxypentyl-amino　(CPA)-group-containing polymer chains grafted onto a porous hollow-fiber membrane. The CPA group was introduced　into the graft chain by a reaction of the epoxy group of poly-glycidyl methacrylate (GMA) chain grafted onto　the porous hollow-fiber membrane with 6-aminohexanoic acid. The electrostatic interaction between the carboxyl　moiety of the CPA group and the quarternary ammonium group of Aliquat 336 gave rise to a high-density impregnation　of Aliquat 336. A higher water volume fraction in the mixture of water and ethanol used as a solvent of Aliquat　336 induced a higher extension of the graft chain, resulting in an increase in the amount of Aliquat 336 impregnated.　In addition, a higher Aliquat 336 concentration produced a higher amount of Aliquat 336 impregnated. A water volume　fraction of 0.33 and an Aliquat 336 concentration of 10% were selected on the basis of a trade-off between the　amount of Aliquat 336 impregnated and the liquid permeability. The pure water flux of porous hollow-fiber membrane　with 1.2 mol Aliquat 336 per kg GMA-grafted porous hollow-fiber membrane was 2.5 m/h at 0.1 MPa and 298　K. During the permeation of 100 mg-Pt/L platinum chloride solution (pH 4.0) through the pores of the Aliquat 336-　impregnated porous hollow-fiber membrane, platinum complex ions (PtCl6 2–) were captured by Aliquat 336 impregnated　to the graft chain, while the permeation pressure required for a constant flow rate increased. The breakthrough　binding capacity of the Aliquat 336-impregnated porous hollow-fiber membrane for platinum was 0.37 mol　per kg of the GMA-grafted porous hollow-fiber membrane.

Journal

• MEMBRANE

  MEMBRANE 32 (3), 168-174, 2007

  THE MEMBRANE SOCIETY OF JAPAN

Keywords

• Alquat336
• impregnation
• graft chain
• porous hollow-fiber membrane
• platinum

Details

• CRID: 1390282681398388992
• NII Article ID: 130005077801
• NII Book ID: AN0023215X
• DOI: 10.5360/membrane.32.168
• ISSN: 18846440
• ISSN: 03851036
• ISSN: http://id.crossref.org/issn/03851036
• NDL BIB ID: 8836176
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8836176
• Web Site: https://www.jstage.jst.go.jp/article/membrane/32/3/32_168/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed