Colloidal Migration Behavior of Radionuclides Sorbed on Mobile Fine Soil Particles through a Sand Layer

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著者

    • TANAKA Tadao
    • Department of Environmental Safety Research, Japan Atomic Energy Research Institute
    • OHNUKI Toshihiko
    • Department of Environmental Safety Research, Japan Atomic Energy Research Institute

抄録

Migration properties of <SUP>60</SUP>Co, <SUP>85</SUP>Sr and <SUP>137</SUP>Cs sorbed on fine soil particles have been examined by a column method. The influent solutions containing both the radionuclides and the fine soil particles smaller than 5μm in diameter were introduced in the coarse sand column of different length between 1 and 10cm. The first order desorption rate constants of the radionuclides from the fine soil particles to the coarse sand were estimated from the relation between the effluent amounts of the radionuclides and the column lengths. The sorption ratios of the radionuclides on the fine soil particles and the coarse sand were obtained by a batch method.<BR>The effluent amounts of the radionuclides decreased with increasing length of the column, then kept a constant values. At the column of 10cm, the effluent amounts of <SUP>60</SUP>Co, <SUP>85</SUP>Sr and <SUP>137</SUP>Cs relative to the influent ones were 0.3, 0.1 and 0.8, respectively. The sorption ratio of each radionuclide for the fine soil particles was several 10 times larger than that for the coarse sand. First order desorption rate constants of the radionuclides from the fine soil particles were in the order of <SUP>85</SUP>Sr><SUP>137</SUP>Cs><SUP>60</SUP>Co. These results show that higher affinity of the radionuclides to the fine soil particles than the coarse sand results the colloidal migration of the radionuclides sorbed on the fine soil particles.

収録刊行物

  • Journal of nuclear science and technology

    Journal of nuclear science and technology 33(1), p.62-68, 1996-01-25

    Atomic Energy Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002074046
  • NII書誌ID(NCID)
    AA00703720
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00223131
  • データ提供元
    CJP書誌  J-STAGE 
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