A mean behavior model of aerobic biodegradation in heterogeneous formation |
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| Authors: | M W Kemblowski C-M Chang I Kamil |
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| Institution: | (1) Utah Water Research Lab, Utah State University, 84322-8200 Logan, UT, USA |
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| Abstract: | It has been observed that the field biodegradation rates for soluble hydrocarbon plumes are significantly smaller than the
aerobic rates observed in the laboratory. It is believed that this difference is related to the fact that in the field oxygen
and hydrocarbon must be mixed before the biodegradation reaction can occur, and that the effective degradation rate is controlled
by the actual, not mean, concentrations of oxygen and hydrocarbon. In this work, we present a conceptual model of oxygen-mixing
limited biodegradation, which indicates that the effective degradation rate should depend on the cross correlation between
the oxygen and hydrocarbon concentration fluctuations. This is followed by a development of a rigorous, field-scale model. |
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