Neptunium Oxalate Precipitation from the Simulated Radioactive Liquid Waste

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The partitioning of Np and Nd by precipitation with oxalic acid and ascorbic acid was investigated in the simulated radioactive liquid waste, which was composed of 10 elements of alkali, alkaline earth and transition metals in nitric acid solution. The effect of concentrations of ascorbic acid and nitric acid on the precipitation yield and the purity of Nd and Np in the simulated radwaste was examined at 0.5M oxalic acid. As a result, Np was coprecipitated with Nd as a carrier and its precipitation yield was increased with ascorbic acid and nitric acid concentrations. It was also found that the initial concentrations of 0.25M ascorbic acid, 2M nitric acid and 0.5M oxalic acid were desirable as an optimum condition for oxalate precipitation of Np and Nd from the simulated radwaste if Pd could be removed in the simulated radwaste prior to oxalate precipitation. Precipitation yield of Pd increased with increasing ascorbic acid. This is due to the reduction of Pd<SUP>+2</SUP> into Pd metal by ascorbic acid.

収録刊行物

  • Journal of nuclear science and technology  

    Journal of nuclear science and technology 34(3), 283-287, 1997-03-25 

    Atomic Energy Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002076690
  • NII書誌ID(NCID)
    AA00703720
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00223131
  • NDL 記事登録ID
    4176281
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A460
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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