Modeling of Selenium Transport at the Kesterson Reservoir, California, U.S.A.
Resource
Journal of Contaminant Hydrology, v.15 p.345-366
Journal
Journal of Contaminant Hydrology
Journal Volume
15
Journal Issue
4
Pages
345-366
Date Issued
1994
Date
1994
Author(s)
Narasimhan, T. N.
Abstract
Field observations indicated that the vertical movement of a selenium plume from the pond into the selenium-free groundwater at the Kesterson reservoir lags significantly behind the hydrodynamic front. The movement of selenium was simulated using DYNAMIX, aredoxcontrolled, multiple species chemical transport model. The actual nature of the retardation mechanism, whether it is inorganically controlled or biologically controlled, is not yet clearly understood. In the present work, the observed retardation is treated equivalently by treating the organic layer of pond-bottom sediments as a medium of oxygen consumption. In addition, the dissolution of magnetite in the contaminated aquifer was treated as a kinetic process. The agreement between the observed and computed results suggests that the inorganic process could at least be a contributing factor in the retardation of the selenium front. Further research is needed to investigate the microbial effect on the movement of selenium. © 1994.
Other Subjects
Groundwater; Porous Media-Flow Through; Selenium; Transport; Aquifers; Computer simulation; Computer software; Dissolution; Drainage; Groundwater; Magnetite; Mass transfer; Reservoirs (water); Sediments; Wastewater treatment; Drainage system; Kesterson reservoir; Microbial effect; Retardation; Selenium transport; Software package DYNAMIX; Selenium; ground water; selenium; article; model; priority journal; united states; waste water management; water contamination; water pollution; chemical transport model; groundwater quality; reservoir water quality; retardation mechanism; sediment; selenium; USA, California, Kesterson Reservoir
Type
journal article
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