Anaerobic degradation of trichloroethylene in soil

Kleopfer, Robert D.; Easley, Diane M; Haas, Bernard B.; Deihl, Trudy G.; Jackson, David E.; Wurrey, C. J.

doi:10.1021/es00133a012

Cited by 107 publications

(41 citation statements)

References 8 publications

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“…Methane was present in the cores from tree PJ12, suggesting that methanogenic conditions driven by microbial infestation were present in the inner part of tree PJ12. Methanogenic conditions are associated with efficient dehalogenation of TCE to cDCE (Parsons et al 1984;Parsons et al 1985;Kloepfer et al 1985;Wilson et al 1986). Thus, the tree core TCE and cDCE distribution between the inner and outer cores of tree PJ12 are consistent with microbial dehalogenation of TCE within the apparent methanogenic inner trunk.…”

Section: Potential Degradation Mechanismmentioning

confidence: 99%

Ground Water Chlorinated Ethenes in Tree Trunks: Case Studies, Influence of Recharge, and Potential Degradation Mechanism

Vroblesky

Clinton

Vose

et al. 2004

Groundwater Monitoring Rem

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Trichloroethene (TCE) was detected in cores of trees growing above TCE‐contaminated ground at three sites: the Carswell Golf Course in Texas, Air Force Plant PJKS in Colorado, and Naval Weapons Station Charleston in South Carolina. This was true even when the depth to water was 7.9 m or when the contaminated aquifer was confined beneath ∼3 m of clay. Additional ground water contaminants detected in the tree cores were cis–1,2‐dichloroethene at two sites and tetrachloroethene at one site. Thus, tree coring can be a rapid and effective means of locating shallow subsurface chlorinated ethenes and possibly identifying zones of active TCE dechlorination. Tree cores collected over time were useful in identifying the onset of ground water contamination. Several factors affecting chlorinated ethene concentrations in tree cores were identified in this investigation. The factors include ground water chlorinated ethene concentrations and depth to ground water contamination. In addition, differing TCE concentrations around the trunk of some trees appear to be related to the roots deriving water from differing areas. Opportunistic uptake of infiltrating rainfall can dilute prerain TCE concentrations in the trunk. TCE concentrations in core headspace may differ among some tree species. In some trees, infestation of bacteria in decaying heartwood may provide a TCE dechlorination mechanism within the trunk.

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Section: Potential Degradation Mechanismmentioning

confidence: 99%

Ground Water Chlorinated Ethenes in Tree Trunks: Case Studies, Influence of Recharge, and Potential Degradation Mechanism

Vroblesky

Clinton

Vose

et al. 2004

Groundwater Monitoring Rem

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“…Regardless of whether states have a formal program or not, however, the challenge still remains of how to deal with this chlorinated solvent contamination.While reductive dechlorination of PCE and TCE has been studied extensively (see, for example, Alvarez-Cohen & McCarty, 1991;Baek & Jaffe, 1989;Barbee, 1994;Bradley & Chapelle, 1997;Carr & Hughes, 1998;Davis & Carpenter, 1990;Dolan & McCarty, 1995;Freedman & Gossett, 1989;Jenal-Wanner & McCarty, 1997;Kleopfer et al, 1985;McCarty, 1997;Sewell & Gibson, 1991;Suarez & Rifai, 1999;Vogel & McCarty, 1985;Weaver et al, 1996;Wiedemeier et al, 1996Wiedemeier et al, , 1999, the behavior of chlorinated solvent plumes over time and their remediation are not as well understood as fuel hydrocarbons. Studies similar to those completed by Rice et al (1995a, b) and Mace et al (1997) for benzene, toluene, ethyl benzene, and xylene (BTEX) are needed to better characterize the overall magnitude of the dry-cleaner problem and to develop an understanding of the potential for natural attenuation of the chlorinated solvents.The studies by Rice et al (1995a, b) and Mace et al (1997) prompted significant changes in state UST programs such as risk-based remediation and increased reliance on natural attenuation for managing low-risk sites.…”

Section: Dry Cleaners Are the Largest User Of Perchloroethene (Pce) Smentioning

confidence: 99%

Natural attenuation of chlorinated solvent plumes at Texas dry cleaners

Suarez

Rifai

Rittaler

et al. 2004

Remediation Journal

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“…Methanotrophic degradation appears to be particularly promising (Little et al 1988). Rates are slower under anaerobic conditions and result in the production of other hazardous compounds, including dichloroethylenes and vinyl chloride (Kleopfer et al 1985). Several bacterial strains that have been isolated appear capable of transforming TCE in the presence of phenol, toluene, or cresol (Nelson et al 1987).…”

Section: Tidchloroethyfenementioning

confidence: 99%

Status and trends in bioremediation treatment technology

Fox

1991

Remediation Journal

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Because of its relatively low cost and potential effectiveness, bioremediation will undoubtedly play a greater role in future management of our hazardous waste problems. Bioremediation technology involves the utilization of microorganisms to transform hazardous organic constituents into innocuous materials. The following discussion reviews the current state of knowledge on a group of hazardous organic compounds, identified by leading scientists and engineers, that currently offer the greatest potential for biological treatment. Included are critical examinations of both laboratory and field studies of nonchlorinated compounds (polycyclic aromatic hydrocarbons and phenols) as well as chlorinated compounds (chlorobenzoic acids and chlorophenols, pentachlorophenols and creosote, chlorinated biphenyls, and trichloroethylene). Biological treatment of both single-compound and multiple-compound waste treatments are considered. In the last decade, careful study has yielded a great deal of information on transformation mechanisms, intexmediate metabolites produced, partial or complete pathways utilized, and the various effects of environmental parameters in laboratory and field environments for many of these compounds. This information will be applied towards increasing RBMBDUTION/SUMMBR 1991 293

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Anaerobic degradation of trichloroethylene in soil

Cited by 107 publications

References 8 publications

Ground Water Chlorinated Ethenes in Tree Trunks: Case Studies, Influence of Recharge, and Potential Degradation Mechanism

Ground Water Chlorinated Ethenes in Tree Trunks: Case Studies, Influence of Recharge, and Potential Degradation Mechanism

Natural attenuation of chlorinated solvent plumes at Texas dry cleaners

Status and trends in bioremediation treatment technology

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