Practical Removal of Radioactivity from Sediment Mud in a Swimming Pool in Fukushima, Japan by Immobilized Photosynthetic Bacteria

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About 90% of the radioactive Cs in the sediment mud of a school's swimming pool in Fukushima, Japan was removed by treatment for 3 d using the alginate immobilized photosynthetic bacterium <I>Rhodobcater sphaeroides</I> SSI. Even though batch treatment was carried out 3 times repeatedly, the activity of immobilized cells in removing Cs was maintained at levels of about 84% (second batch) and 78% (third batch). Cs was strongly attached to the sediment mud because, even with HNO<SUB>3</SUB> treatment at pH of 2.00–1.60 for 24 h, it was not eluted into the water. Furthermore, more than 75% of the Cs could be removed without solubilization with HNO<SUB>3</SUB>. This suggests that the Cs attached to the sediment mud was transformed into immobilized cells <I>via</I> the Cs<SUP>+</SUP> ion by the negative charge of the immobilized cell surface and/or the potassium transport system of the photosynthetic bacterium.

収録刊行物

  • Bioscience, biotechnology, and biochemistry

    Bioscience, biotechnology, and biochemistry 76(4), 859-862, 2012-04-23

    Japan Society for Bioscience, Biotechnology, and Agrochemistry

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各種コード

  • NII論文ID(NAID)
    10030752297
  • NII書誌ID(NCID)
    AA10824164
  • 本文言語コード
    ENG
  • 資料種別
    SHO
  • ISSN
    09168451
  • NDL 記事登録ID
    023593318
  • NDL 請求記号
    Z53-G223
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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