Acetylene Tunes Microbial Growth During Aerobic Cometabolism of Trichloroethene.

ABSTRACT: Microbial aerobic cometabolism is a possible treatment approach for large, dilute trichloroethene (TCE) plumes at groundwater contaminated sites. Rapid microbial growth and bioclogging pose a persistent problem in bioremediation schemes. Bioclogging reduces soil porosity and permeability, which negatively affects substrate distribution and contaminant treatment efficacy while also increasing the operation and maintenance costs of bioremediation. In this study, we evaluated the ability of acetylene, an oxygenase enzyme-specific inhibitor, to decrease biomass production while maintaining aerobic TCE cometabolism capacity upon removal of acetylene. We first exposed propane-metabolizing cultures (pure and mixed) to 5% acetylene (v v^-1) for 1, 2, 4, and 8 d and we then verified TCE a

SUBMITTER: Skinner JP 

PROVIDER: S-EPMC11008246 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature