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2009 Fiscal Year Final Research Report

Elucidation of Reverse-micelle Formation by Small Angle Scattering Method and Development for Controlling Third Phase Formations in Biphasic Extraction System

Research Project

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Project/Area Number 19560847
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Nuclear engineering
Research InstitutionJapan Atomic Energy Agency

Principal Investigator

YAITA Tsuyoshi  Japan Atomic Energy Agency, 量子ビーム応用研究部門, 研究主幹 (40370481)

Co-Investigator(Kenkyū-buntansha) SUZUKI Shinichi  独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 研究副主幹 (60354841)
OKAMOTO Yoshihiro  独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 研究主幹 (70370369)
SHIWAKU Hideaki  独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 研究副主幹 (10222043)
Project Period (FY) 2007 – 2009
Keywords逆ミセル / 再処理 / 溶媒抽出 / 第三相制御 / 中性子小核散乱
Research Abstract

The formation mechanism for the reverse micelle which is as an origin of the third phase in the extraction was elucidated by small angle neutron scattering. From analysis based on Baxter model, species of reverse micelle in the extraction system is one oligomer and increase in number of oligomer would result in a visible third phase formation. The micelle formation is strongly correlated with alkyl chain length of an extractant and thus, this length is considered to be an important factor to suppress the third phase formation. Furthermore, the curves of the third phase formation in the U(IV) extraction systems suggested that the critical micelle concentration of an extraction system decreased drastically.

  • Research Products

    (5 results)

All 2009 2008 2007

All Journal Article (2 results) Presentation (3 results)

  • [Journal Article] Extractant Aggregation as a Mechanism of Metal Ion Selectivity2009

    • Author(s)
      M.P. Jensen, T. Yaita, R. Chiarizia
    • Journal Title

      Proceedings of ISEC

      Pages: 1029-1034

  • [Journal Article] Reverse-micelle Formation in the Partitioning of Metal Cations by Biphasic Systems Containing a Tetraalkyldiglycol-amide2007

    • Author(s)
      M.P. Jensen, T. Yaita, R. Chiarizia
    • Journal Title

      Langmuir 23(9)

      Pages: 4765-4771

  • [Presentation] SANS and EXAFS Investigation of Alkyl Chain Length and Branching Effects of N, N-dialkylamides on Aggregation Property2009

    • Author(s)
      S. Suzuki, T. Yaita, Y. Okamoto, H. Shiwaku, R. Motokawa, S. Koizumi
    • Organizer
      International conferences, Actinides2009
    • Place of Presentation
      San Francisco
    • Year and Date
      20090000
  • [Presentation] Extractant Aggregation as a Mechanism of Metal Ion Selectivity2008

    • Author(s)
      M.P. Jensen, T. Yaita, R. Chiarizia
    • Organizer
      International Solvent Extraction Conference
    • Place of Presentation
      Tuson, USA
    • Year and Date
      20080000
  • [Presentation] Reverse-micelle formation in the partitioning of trivalent metal cations by biphasic systems containing a tetraalkyldiglycolamide2007

    • Author(s)
      T. Yaita
    • Organizer
      International Seminar of TIT COE-INES
    • Place of Presentation
      Tokyo
    • Year and Date
      20070000

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Published: 2011-06-18   Modified: 2016-04-21  

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