Reductive dechlorination of tetrachloroethylene by a chlorobenzoate-enriched biofilm reactor.

doi:10.1021/es00053a031

Paper

Reductive dechlorination of tetrachloroethylene by a chlorobenzoate-enriched biofilm reactor.

Published Apr 1, 1994 · B. Fathepure, J. Tiedje

Environmental science & technology

Q1 SJR score

41

Citations

3

Influential Citations

Full textSemantic Scholar

Abstract

This study evaluates the potential and technical feasibility of treating chloroaliphatics, common groundwater contaminants, using a specialized microbial consortium under fixed-film conditions. The reactor was developed using 3-chlorobenzoate (3-CB) as a substrate under anaerobic conditions and the enrichment that harbored an unusual dechlorinator, Desulfomonile tiedjei DCB-1. The dechlorination rate of both PCE and 3-CB increased with increasing flow rates up to 50 mL -1 . The maximum observed dechlorination rates of PCE and 3-CB fed at 6.0 and 1000 μM were 2.0 and 414 μmol L -1 , respectively

Study Snapshot

A chlorobenzoate-enriched biofilm reactor effectively dechlorinates tetrachloroethylene (TCE) and 3-chlorobenzoate (3-CB) in groundwater, with potential for use in treating other chloroaliphatic contaminants.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

Paper

Reductive dechlorination of tetrachloroethylene by a chlorobenzoate-enriched biofilm reactor.

References

Citations

Reductive dechlorination of perchloroethene (PCE) and bacterial community changes in a continuous-flow, two-stage anaerobic column

The continuous-flow, two-stage anaerobic column effectively dechlorinates perchloroethene without bioaugmentation, indicating potential up-scaling applications in PCE dechlorination.

Subtle changes in the active site architecture untangled overlapping substrate ranges and mechanistic differences of two reductive dehalogenases

Subtle changes in the active site architecture of two reductive dehalogenases reveal divergent mechanisms and substrate ranges, allowing for clear differentiation between their functions.

Detoxification of 1,1,2-trichloroethane to ethene in a bioreactor co-culture of Dehalogenimonas and Dehalococcoides mccartyi strains.

A syntrophic co-culture of Dehalogenimonas and Dehalococcus mccartyi strains successfully detoxifies 1,1,2-trichloroethane to ethene, demonstrating the potential environmental relevance of microbial cooperation for groundwater pollution.

Detoxification of 1,1,2-Trichloroethane to Ethene by Desulfitobacterium and Identification of Its Functional Reductase Gene

Desulfitobacterium strain PR can dechlorinate 1,1,2-trichloroethane to ethene within 48 days, offering an environmentally friendly strategy for treating groundwater pollution without producing carcinogenic vinyl chloride.

Evaluation of substrate removal kinetics for UASB reactors treating chlorinated ethanes

The Grau second-order kinetic model effectively predicts the performance of upflow anaerobic sludge blanket reactors in treating wastewaters containing chlorinated ethanes under various organic and hydraulic loading conditions.

Origin and Propagation of an Incorrect Chemical Degradation Pathway in the Literature: cis-1,2-Dichloroethylene as a Daughter Product of 1,1,1-Trichloroethane

Cis-1,2-dichloroethylene is not a proven transformation product of 1,1,1-trichloroethane, as previously reported in the literature.

Microbial transformation of chlorinated benzoates

Chlorinated benzoates can biodegrade to CO_2 and chloride in both aerobic and anaerobic conditions, with diverse bacterial strains using them as electron and carbon sources.

Bio‐reductive dechlorination of 1,1,1‐trichloroethane and chloroform using a hydrogen‐based membrane biofilm reactor

A hydrogen-based membrane biofilm reactor effectively removes 1,1,1-trichloroethane and chloroform from wastewater through reductive dechlorination, with kinetics slowed by reduced H2 bioavailability or competition from sulfate reduction.

Biodegradation of Tetrachloroethene by Chitin Fermentation Products in a Continuous Flow Column System

Chitin fermentation products, particularly acetate, effectively promote tetrachloroethene PCE reduction, with propionate acting as an inhibitor when present alone.