STP933

    Migration of Leachate Solution Through Clay Liner and Substrate

    Published: Jan 1986


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    Abstract

    The migration of various contaminants in a sensitive soil, used as liner and in-situ substrate in an actual landfill site, is investigated in controlled laboratory column leaching tests. Using the actual leachate collected from the site, the laboratory tests show good attenuation of the heavy metals studied and lesser attenuation of the salts. Comparison between predicted and concentration profiles, using C1 as an example, shows that there is significant need to account for the time and spatial variation of the specific dispersion coefficients — caused by continued leaching or intrusion of the contaminants — if proper accord between predicted and measured profiles is to be achieved.

    Keywords:

    migration, contaminants, leaching, leachate, sensitive clay, heavy metals, dispersion coefficient, buffering capacity


    Author Information:

    Yong, RN
    William Scott professor of civil engineering and applied mechanics, graduate research assistant, and division chief, W., McGill University, Montreal, Quebec,

    Warith, MA
    William Scott professor of civil engineering and applied mechanics, graduate research assistant, and division chief, W., McGill University, Montreal, Quebec,

    Boonsinsuk, P
    William Scott professor of civil engineering and applied mechanics, graduate research assistant, and division chief, W., McGill University, Montreal, Quebec,


    Paper ID: STP23080S

    Committee/Subcommittee: D34.01

    DOI: 10.1520/STP23080S


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