A Pore Scale Study of Substrate Mixing and Biological Degradation in Porous Media
Knutson, Chad Eric
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https://hdl.handle.net/2142/83254
Description
Title
A Pore Scale Study of Substrate Mixing and Biological Degradation in Porous Media
Author(s)
Knutson, Chad Eric
Issue Date
2004
Doctoral Committee Chair(s)
Werth, Charles J.
Valocchi, Albert J.
Department of Study
Civil and Environmental Engineering
Discipline
Civil and Environmental Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Hydrology
Language
eng
Abstract
Finally, degradation rates obtained from a simple continuum model with uniform flow field are compared to results from the full pore scale model. Substrate degradation rates are consistently underpredicted when transverse dispersion coefficients obtained from nonreactive transport simulations are used for reactive transport. The continuum model with values of transverse dispersion fitted to the reactive case is able to match downstream degradation rates from the pore scale model, but not rates near the inlet. Adjusting the reaction rate constant in the continuum model does not achieve satisfactory agreement with pore scale results.
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