Cadmium Transport in Volcanic Ash Soil During Citric Acid Solution Flow

    Volume 3, Issue 6 (June 2006)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 17 May 2006

    Page Count: 8


    Mizoguchi, M
    Associate Professor of Soil Physics and Soil Hydrology, The University of Tokyo, Tokyo,

    Abe, Y
    Graduate Student of Soil Physics and Soil Hydrology, The University of Tokyo, Tokyo,

    Yamaguchi, N
    Senior Researcher of Soil Environmental Chemistry, National Institute for Agro-environmental Sciences, Ibaraki,

    Miyazaki, T
    Professor of Soil Physics and Soil Hydrology, The University of Tokyo, Tokyo,

    (Received 1 April 2005; accepted 29 August 2005)

    Abstract

    Cadmium contamination of soil is one of the most serious environmental problems in Japan. As basic research toward the development of a decontamination method to remove cadmium from soil, cadmium transport has been measured in a volcanic ash soil during citric acid solution flow. After a soil column that was polluted artifically by cadmium nitrate was saturated with distilled water, citrate solution was passed through the soil column. Leachate from the soil column was collected for the measurement of cadmium concentration. At the end of the flow experiment, the soil column was sliced into 2-cm-thick pieces and the residual cadmium in soil was analyzed. As a result, it was found that the higher the concentration of citrate, the faster the cadmium discharged from the soil. This result can be explained in terms of the downward movement of the soluble complex of citrate with cadmium in the soil.


    Paper ID: JAI13336

    DOI: 10.1520/JAI13336

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    Author
    Title Cadmium Transport in Volcanic Ash Soil During Citric Acid Solution Flow
    Symposium Contaminated Sediments: Evaluation and Remediation Techniques, 2006-05-25
    Committee D18