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Predicting Transport of Organics through Soil Columns using Distributed Mass-Transfer Rates

by Teresa B. Culver, (A.M.ASCE),
Stephen P. Hallisey,



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

A numerical model to describe contaminant transport through soil columns, including distributed mass-transfer, is developed. Both a gamma distribution and a lognormal distribution are used to describe the mass transfer rates. For organic contaminant transport, the distributed models are compared to the two-site equilibrium/kinetic model. The distributed models provide superior estimates, except for with sharply peaked break-through fronts.

Subject Headings: Soil pollution | Contaminant transport | Numerical models | Mass transfer | Groundwater pollution | Transport rates | Transport phenomena

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