Reductive dechlorination of halogenated phenols by a sulfate-reducing consortium

Anaerobic degradation of halogenated phenols by sulfate-reducing consortia.

Sulfidogenic consortia enriched from an estuarine sediment were maintained on either 2-, 3-, or 4-chlorophenol as the only source of carbon and energy for over 5 years. The enrichment culture on 4-chlorophenol was the most active and this consortium was selected for further characterization. Utilization of chlorophenol resulted in sulfate depletion corresponding to the values expected for compl...

Role of methanogenic and sulfate-reducing bacteria in the reductive dechlorination of tetrachloroethylene in mixed culture.

Several reports have demonstrated biotransformation of tetrachloroethylene at low concentrations under strict anaerobic conditions by sequential reductive dechlorination (Fathepure and Boyd, 1988a; Freedman and Gosset, 1989). During this biodegradation, trichloroethylene (TCE), 1,1dichloroethylene, vinylidene chloride (DCE), and vinyl chloride (VC) are the intermediate products ; ethene or etha...

Reductive dechlorination of tetrachloroethene by a high rate anaerobic microbial consortium.

Tetrachloroethene (PCE) and other chloroethenes are major contaminants in groundwater, and PCE is particularly resistant to attack by aerobes. We have developed an anaerobic enrichment culture that carries out reductive dechlorination of chloroethenes to ethene at high rates, thereby detoxifying them. Although the electron donor added to the culture is methanol, our evidence indicates that H2 i...

Effects of 1,1,1-Trichloroethane and Triclocarban on Reductive Dechlorination of Trichloroethene in a TCE-Reducing Culture

Chlorinated compounds were generally present in the environment due to widespread use in the industry. A short-term study was performed to evaluate the effects of 1,1,1- trichloroethane (TCA) and triclocarban (TCC) on trichloroethene (TCE) removal in a reactor fed with lactate as the sole electron donor. Both TCA and TCC inhibited TCE reduction, but the TCC had a more pronounced effect compared...

Kinetics of Reductive Dechlorination of Trichloroethane (TeA) by Anaerobic Biofilms