Precipitation Stripping of Samarium Hydroxide from Tri-n Butyl Phosphate.

DOI

Bibliographic Information

Other Title
  • ＴＢＰ（Ｔｒｉ‐ｎ　Ｂｕｔｙｌ　Ｐｈｏｓｐｈａｔｅ）を用いた晶析逆抽出法によるサマリウム水酸化物生成

Description

The precipitation stripping from organic solution of tri-n-butyl phosphate (TBP) loaded with samarium into NaOH aqueous solution at room temperature was investigated in order to enlarge the use of solvent extraction.<BR>The precipitation rate with NaOH solution was considerably fast and the precipitation fraction more than 99% was attained within 60 sec. These precipitates identified as Sm (OH)3 from an x-ray diffraction analysis. When a lower NaOH solution was used, the precipitates could not be found although samarium was completely stripped. This result was attributable to the depletion of the OH- ions which reacted with nitric acid simultaneously extracted with samarium by TBP. An aqueous NaOH solution whose concentration is higher than that of nitric acid extracted by TBP in the extraction stage is thus necessary for the precipitation stripping.

Journal

  • RESOURCES PROCESSING

    RESOURCES PROCESSING 46 (3), 147-152, 1999

    The Resources Processing Society of Japan

Details 詳細情報について

  • CRID
    1390001204266733184
  • NII Article ID
    130003638040
  • DOI
    10.4144/rpsj1986.46.147
  • ISSN
    18839150
    09124764
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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