Desorption of Soil Contaminants Due to Rainwater Infiltration
Publication: Journal of Hydraulic Engineering
Volume 122, Issue 9
Abstract
Rainwater infiltration through soils at landfills and other waste sites containing adsorbed chemical contaminants results in the continuous release of leachates into the ground-water environment. Due to continuous desorption of contaminants, the soils are progressively cleansed, and the contaminant concentration of the leachate diminishes with time. This paper presents a simple approach to estimate leachate concentration, residual contaminant levels of soils, and quantities of contaminants released into the ground-water environment after specified years of infiltration. Two desorption processes are analyzed: one using a constant distribution coefficient, and the other following Langmuir's equilibrium adsorption isotherm. This approach can be used to assess preand postremediation impacts of leachates originating at a waste site on ground-water environment in the vicinity.
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References
1.
Carsel, R. F., Smith, C. N., Mulkey, L. A., Dean, J. D., and Jowise, P. (1984). “Users manual for the pesticide root zone model (PRZM).”EPA-600/3-84-109, U.S. Environmental Protection Agency, Athens, Ga.
2.
Maidment, D. R. (1993). Handbook of hydrology . McGraw-Hill Book Co., Inc., New York, N.Y.
3.
Oak Ridge National Laboratory (ORNL). (1990). The installation restoration program toxicology guide . Health and Safety Research Division, Oak Ridge, Tenn.
4.
Prakash, A.(1982). “Ground-water contamination due to vanishing and finite-size continuous sources.”J. Hydr. Div., ASCE, 108(4), 572–590.
5.
Prakash, A.(1984). “Ground-water contamination due to transient sources of pollution.”J. Hydr. Engrg., ASCE, 110(11), 1642–1649.
6.
Rai, D., and Zachara, J. M. (1984). Chemical attenuation rates, coefficients, and constants in leachate migration, vol. 1, a critical review . Battelle, Pacific Northwest Laboratories, Richland, Wash.
7.
Salhotra, A. M., Mineart, P., Hansen, S. S., and Allison, T. (1990). “Multimedia exposure assessment model (MULTIMED) for evaluating the land disposal of wastes, model theory.” U.S. Environmental Protection Agency, Athens, Ga.
8.
Schroeder, P. R., Dozier, T. S., Zappi, P. A., McEnroe, B. M., Sjostrom, J. W., and Peyton, R. L. (1994). “The hydrologic evaluation of landfill performance (HELP) model.”EPA/600/R-94/168b, U.S. Environmental Protection Agency, Cincinnati, Ohio.
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Copyright © 1996 American Society of Civil Engineers.
History
Published online: Sep 1, 1996
Published in print: Sep 1996
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