Transport Phenomena of Volatile Solute in Soil during Bioventing Technology

    Volume 3, Issue 7 (July 2006)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Page Count: 6


    Suko, T
    National Institute of Advanced Industrial Science and Technology,

    Fujikawa, T
    National Institute of Rural Engineering,

    Miyazaki, T
    Graduate School of Agricultural and Life Sciences, The University of Tokyo,

    (Received 30 March 2005; accepted 19 October 2005)

    Abstract

    Bioventing is one of the remediation techniques for volatile organic compound (VOC) contamination with VOC in the vadose zone. The object of this study is to investigate the pollutant transport and removal during aeration treatment focusing on convection, biodegradation, and volatilization. As for the result of 20-cm column experiment, dodecane removal ratio of the samples with aeration was about 20 % higher than those with no aeration. But after 30 days, the increasing rate of dodecane removal ratio decreased drastically in all cases. Total germ density increased after 10 days, but stopped increasing after 30 days. In the samples with higher water content, total germ numbers and dodecane removal ratio increased largely at the inlet of the air. From the estimations of the contribution of volatilization and biodeg-radiation, the authors found that volatilization played a more important role on dodecane removal during the first 10 days of the column experiment, and biodegradation became predominant afterward.


    Paper ID: JAI13351

    DOI: 10.1520/JAI13351

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    Author
    Title Transport Phenomena of Volatile Solute in Soil during Bioventing Technology
    Symposium Contaminated Sediments: Evaluation and Remediation Techniques, 2006-05-25
    Committee D18