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Kinetics of Mixed Microbial Assemblages Enhance Removal of Highly Dilute Organic Substrates

By David L. Lewis, Robert E. Hodson and Huey-Min Hwang

Abstract

Our experiments with selected organic substrates reveal that the rate-limiting process governing microbial degradation rates changes with substrate concentration, S, in such a manner that substrate removal is enhanced at lower values of S. This enhancement is the result of the dominance of very efficient systems for substrate removal at low substrate concentrations. The variability of dominant kinetic parameters over a range of S causes the kinetics of complex assemblages to be profoundly dissimilar to those of systems possessing a single set of kinetic parameters; these findings necessitate taking a new approach to predicting substrate removal rates over wide ranges of S

Topics: General Microbial Ecology
Year: 1988
OAI identifier: oai:pubmedcentral.nih.gov:202801
Provided by: PubMed Central
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