A dynamic model that describes the biodegradation of secondary substrates through oxygenase reactions in biofilms has been developed. The model incorporates intracellular reducing power, in the form of NADH, as a link between the rate of utilization of primary substrates and the biodegradation of secondary substrates. The reaction kinetics were integrated into a diffusive biofilm model with internal and external mass transfer limitations and then combined into a continuous flow reactor model. Preliminary evaluation of the model has demonstrated that mass transfer limitations substantively reduced the removal of the secondary substrate as compared to a suspended growth reactor with an equivalent mass of biomass. A sensitivity analysis revealed that model predictions of the removal of secondary substrate were highly sensitive to the parameters describing the availability of reducing power and to the compound-specific biodegradation kinetic parameters.
Research Article|April 01 1999
Modeling cometabolic biodegradation of organic compounds in biofilms
Wayne J. Parker
Water Sci Technol (1999) 39 (7): 147-152.
Pascale Champagne, Wayne J. Parker, P. Van Geel; Modeling cometabolic biodegradation of organic compounds in biofilms. Water Sci Technol 1 April 1999; 39 (7): 147–152. doi: https://doi.org/10.2166/wst.1999.0349
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