CMPO含浸吸着材による高レベル放射性廃液核種分離システム Separation System for HLLW by Using CMPO Impregnated Silica Adsorbent

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  The process concept of separation system of high-level radioactive liquid waste (HLLW) using an octylphenyl-<i>N</i>,<i>N</i>-diisobutylcarbomoyl phosphine oxide impregnated silica adsorbent (CMPO-adsorbent) was designed for separation of Cs and Sr. The process consists of two separation steps. Each step is composed of three CMPO-adsorbent columns, and the adsorbents are used in rotation for separation of HLLW. That is, the system has six columns. Uranium and Zirconium inhibit the adsorption of minor actinoids (MA) and lanthanoids. Therefore, the adsorption and removal of U and Zr from the HLLW occur in the 1st step. Adsorbed U and Zr are eluted using citric acid. The HLLW from the 1st step is sent to the 2nd step to adsorb MA, lanthanoids and other transition metals. MA and lanthanoids are eluted using 0.01 mol/dm<sup>3</sup> HNO<sub>3</sub>, and Mo is recovered by using oxalic acid. The process required a large amount of citric acid and oxalic acid, but these eluents can be reused, therefore the amounts of spent acids are reduced. The column adopted a cartridge form in consideration of the exchange of adsorbent. The bed volume of the adsorbent is 0.67 m<sup>3</sup>/column. The size of separation plant has 60 m length, 80 m breadth and 36 m height.<br>

収録刊行物

  • 日本原子力学会和文論文誌 = Transactions of the Atomic Energy Society of Japan  

    日本原子力学会和文論文誌 = Transactions of the Atomic Energy Society of Japan 6(2), 196-204, 2007-06-25 

    Atomic Energy Society of Japan

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各種コード

  • NII論文ID(NAID)
    10018763675
  • NII書誌ID(NCID)
    AA11643165
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13472879
  • NDL 記事登録ID
    8884315
  • NDL 雑誌分類
    ZN36(科学技術--原子力工学・工業)
  • NDL 請求記号
    Z74-C788
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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