Biotransformations of selected alkylbenzenes and halogenated aliphatic hydrocarbons in methanogenic aquifer material:  a microcosm study

Wilson, B.H.; Smith, Garmon B.; Rees, J. E.

doi:10.1021/es00152a005

Cited by 231 publications

(125 citation statements)

References 19 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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“…A few of these compounds, generally with a low level of chlorination, are subject to aerobic degradation [ [2][3][4][5][6][7] or transformation [8-10; see also 11], and some of these degradative capacities can be applied to waste or water treatment [5,12,13]. But for the most part, the highly chlorinated solvents are subject only to anaerobic transformation [14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Anaerobic dechlorination of tetrachloromethane and 1,2-dichloroethane to degradable products by pure cultures of Desulfobacterium sp. and Methanobacterium sp.

Egli

1987

FEMS Microbiology Letters

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“…More than three decades of research has produced numerous laboratory and field studies have shown that microorganisms indigenous to the subsurface environment can degrade a variety of hydrocarbons, including components of gasoline, kerosene, diesel, and jet fuel (e.g., Jamison et al, 1975;Atlas, 1981Atlas, , 1984Atlas, , and 1988Young, 1984;Bartha, 1986;Wilson et al, 1986 andBarker et al, 1987;Baedecker et al, 1988;Lee, 1988;Chiang et al, 1989;Cozzarelli et al, 1990;Leahy and Colewell, 1990;Alvarez and Vogel, 1991;Evans et al, 1991a and1991b;Thierrin et al, 1992;Malone et al, 1993;Davis et al, 1994a and1994b;Lovley et al, 1995). In fact, almost all petroleum hydrocarbons are biodegradable.…”

Section: A431 Characteristics Of Biodegradation At Fuel-release Sitesmentioning

confidence: 99%

Implementing Monitored Natural Attenuation and Expediting Closure at Fuel-Release Sites

Brauner¹,

Downey²,

Hicks³

et al. 2004

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Biotransformations of selected alkylbenzenes and halogenated aliphatic hydrocarbons in methanogenic aquifer material: a microcosm study

Cited by 231 publications

References 19 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

Anaerobic dechlorination of tetrachloromethane and 1,2-dichloroethane to degradable products by pure cultures of Desulfobacterium sp. and Methanobacterium sp.

Implementing Monitored Natural Attenuation and Expediting Closure at Fuel-Release Sites

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