Electrokinetically Enhanced Settlement and Remediation of Contaminated Sediment

    Volume 3, Issue 6 (June 2006)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 17 May 2006

    Page Count: 13


    Chung, HI
    Research Fellow, Korea Institute of Construction Technology,

    Sills, GC
    Professor, Oxford University, Oxford,

    Kamon, M
    Professor, Graduate School of Global Environmental Studies, Kyoto University,

    (Received 19 April 2005; accepted 13 September 2005)

    Abstract

    Electrokinetic technique has been used in sedimentation at mining applications as a volume reduction for slurry tailing wastes. This technique has been used in remediation for environmental application as a potential in-situ remediation method for contaminated soils and wastes. Thus electrokinetic technique can be used in sedimentation and remediation of sediments. A regulated constant voltage was applied on the testing sample, directed upward, top cathode (−) and bottom anode (+) during electrokinetic sedimentation process. On the other hand, constant voltage was applied on the testing sample, directed downward, top anode (+) and bottom cathode (−) during electrokinetic remediation process. This means that the polarity reversal was employed. The time dependent settlement and concentration due to electrophoresis and electro-osmosis was measured on an hourly basis. The sedimentation rate of specimen and removal rate of contaminant in contaminated sediment were increased with increasing of applied voltages.


    Paper ID: JAI13307

    DOI: 10.1520/JAI13307

    ASTM International is a member of CrossRef.

    Author
    Title Electrokinetically Enhanced Settlement and Remediation of Contaminated Sediment
    Symposium Contaminated Sediments: Evaluation and Remediation Techniques, 2006-05-25
    Committee D18