Modelling TCE degradation by a mixed culture of methane-oxidizing bacteria

Kim Broholm, Thomas Højlund Christensen, Bjørn K. Jensen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A model describing the growth of bacteria and the degradation of methane and trichloroethylene (TCE) based on the concept of competitive inhibition is proposed. The model has been applied to laboratory batch experiments representing different initial TCE concentrations (50–4300 μg/l) and initial methane concentrations (0.53–3.2 mg/l). The proposed model simulated successfully the data obtained for initial methane concentration (less than 1.8 mg/l), causing constant experimental growth conditions during the experiments. This indicates that the interactions between methane and TCE degradation can be explained as competitive inhibition. The model simulations of the results from the experiments with the highest initial methane concentration of 3.2 mg/l failed, supposedly because the growth conditions changed during the experiments. The proposed model is a useful engineering tool for design of treatment processes and in situ bioremediation schemes for degradation of TCE by methane-oxidizing bacteria.
Original languageEnglish
JournalWater Research
Volume26
Issue number9
Pages (from-to)1177-1185
ISSN0043-1354
Publication statusPublished - 1992

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