The use of methanotrophic bacteria for the treatment of groundwater contaminated with trichloroethene at the US Department of Energy Kansas City Plant
- Oak Ridge National Lab., TN (USA)
This study was conducted to demonstrate the technical feasibility of a trickle-filter methanotrophic bioreactor for the remediation of trichloroethene (TCE) contamination in groundwater. A bench-scale continuous-flow bioreactor was constructed and operated for several months to treat synthetic contaminated groundwater and to identify the rate of TCE degradation and the parameters that control bioreactor performance. With influent concentrations of TCE and trans-1,2-dichloroethene (DCE) of 1 mg/L each and a residence time of 50 min, approximately 50% of the TCE and 90% of the DCE were degraded in a single pass through the bioreactor. Further degradation of TCE was obtained with liquid recycle. The performance of the bench-scale bioreactor indicates that bioremediation of TCE-contaminated groundwater is technically feasible. A 3-month pilot plant project to further develop the process is estimated to cost approximately $180,000. A full-scale plant ranging in size from 50 to 700 gal/min is estimated to cost from $180,000 to $1 million to construct and from $4 to $1 per 1000 gal to operate.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- DOE/DP
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5292070
- Report Number(s):
- ORNL/TM-11084; ON: DE90004349
- Resource Relation:
- Other Information: Environmental Sciences Division Publication No. 3256
- Country of Publication:
- United States
- Language:
- English
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