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Comparison of analytical and numerical biodegradation models with application to aquifer remediation
Alder-Schaller, Sarah Elizabeth
Bedient, Philip B.
Master of Science
Contaminant transport in ground water is predicted through the use of analytical and numerical models. The horizontal plane source analytical code (HPS) was compared to the USGS solute transport numerical code (MOC) for different problem configurations. BIOPLUME II is a sophisticated numerical model which estimates aerobic biodegradation of benzene, toluene, and xylene in ground water. Predictions of biodegradation obtained using the BIOPLUME II model were matched with predictions from an analytical first order decay solution by varying the first order decay rate. Numerical models are useful tools for evaluating different well patterns in the design of an aquifer remediation scheme. The effect of oxygen injection in aquifer remediation schemes was numerically simulated using BIOPLUME II. The effect of varying oxygen levels was evaluated for different well patterns and the results were used to simulate aquifer restoration at an aviation fuel spill site.