Numerical modeling of contaminant transport resulting from dissolution of a coal-tar pool in an experimental aquifer |
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| Authors: | Kenneth Y Lee Johannes Khinast Jung-Hoon Kim |
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| Institution: | (1) Department of Civil Engineering, West Virginia University Institute of Technology, Montgomery, WV 25136, USA;(2) Department of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA;(3) Department of Civil and Environmental Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA |
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| Abstract: | A previously developed two-dimensional numerical model is further developed for simulating the transport of dissolved contaminants originating from dissolution of a coal tar pool in a stratified, saturated porous medium. The model is used to simulate contaminant transport resulting from a rectangular-shaped coal-tar-pool dissolution experiment conducted in a large-scale experimental aquifer. The experimental porous medium consists of two sand strata, a high-hydraulic-conductivity upper stratum and a low-hydraulic-conductivity bottom stratum. The experiment was conducted to a time of 354 days and the groundwater velocity was changed several times within this duration. Model simulations show good agreement against observed contaminant concentrations, and simulations show that dissolved solute below the pool migrated deeper into the bottom stratum as compared to the upper stratum. Furthermore, simulations also suggest that contaminant concentrations in the lower stratum never reached quasi steady-state during the experimental time frame. |
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| Keywords: | Coal tar Solute transport Groundwater protection Contamination Numerical modeling |
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