Tuesday, June 17

10:30 AM-12:30 PM
Turcoise Room

Modeling and Analysis of In-Situ Bioremediation Systems

In-situ bioremediation is a promising technology to restore groundwater and soil contaminated with organic pollutants because of its cost effectiveness and its potential capability of completely destroying the harmful compounds. Current methods include direct numerical simulations on three-dimensional problems; analysis and asymptotic methods on one dimensional systems, which are used to confirm detailed numerical results and consolidate our understanding. More effort is needed to bridge the gap between numerical and analytical results.

The speakers will present numerical simulation and mathematical analysis of traveling fronts arising in pollutant removel processes where a sorbing pollutant is degraded by indigenous bacteria stimulated by the injection of a limiting nonsorbing nutrient; numerical solute transport code for evaluating natural bioremediation, petroleum hydrocarbon spills, and chlorinated solvent plumes in groundwater; and simulations of coupled electron acceptor-based biodegradation and multiple hydrocarbon compound transport.

Organizer: Jack X. Xin
University of Arizona

10:30 Characterization of Traveling Waves and Analytical Estimation of Pollutant Removal in One-Dimensional Subsurface Bioremediation Modeling
Albert J. Valocchi and Shunji Oya, University of Illinois, Urbana-Champaign
11:00 Modeling Intrinsic Bioremediation in Groundwater
Mark A. Widdowson, Virginia Polytechnic Institute and State University
11:30 Traveling Waves in a Numerical Model of Subsurface Bioremediation
Bryan Travis, Los Alamos National Laboratory
12:00 Existence and Stability of Traveling Waves in a Biodegradation Model for Organic Contaminants
R. Murray, University of Arizona, and Jack X. Xin, Organizer

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TJF, 4/30/97
MMD, 5/5/97