Volume 17, Issue 3 (September 1994)

    Geo-Environmental Assessment of a Micaceous Soil for Its Potential Use as an Engineered Clay Barrier

    CODEN: GTJOAD

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    Abstract

    The ability of the fine fraction of a natural micaceous soil in the Stanleyville area near Perth, Ontario, to retard an acidic waste leachate is examined. Batch and leaching column tests were used to investigate the retention capcity of the natural soil. To investigate the effect of ion competition on adsorption/desorption capacity of the soil, single and multi-components of Pb2+ and Zn2+ were used in batch experiments. The experimental results from column leaching tests were analyzed in terms of adsorption/desorption isotherms, breakthrough curves, and migration profiles of each specific ion in the influent. It was shown that the soil has high adsorption capacity for K+, Pb2+, and Zn2+ as indicated from the concentration profiles of the soil pore fluid with depth during leaching. At the same time, desorption of Na+, Mg2+, and Ca2+ occurred due to ion exchange.

    The experimental data were analyzed using a phenomenological approach based on nondimensional analysis, analytical solution via Fourier series, and the root time method. The calculated diffusion parameters are presented and compared with the literature.


    Author Information:

    Mohamed, AMO
    Associate director, Geotechnical Research Centre, adjunct professor, Civil Engineering and Applied Mechanics Department, McGill University, Montreal,

    Yong, RN
    William Scott professor, Civil Engineering and Applied Mechanics Department, director, Geotechnical Research Centre, McGill University, Montreal,

    Tan, BK
    Lecturer, University Kegangsaan Malaysia, Selangor, Malaysia

    Farkas, A
    Consulting geologist, Toronto, Ontario

    Curtis, LW
    President, Laurence Curtis & Associates Inc., Toronto, Ontario


    Stock #: GTJ10104J

    ISSN: 0149-6115

    DOI: 10.1520/GTJ10104J

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    Author
    Title Geo-Environmental Assessment of a Micaceous Soil for Its Potential Use as an Engineered Clay Barrier
    Symposium , 0000-00-00
    Committee D18