Abiotic and biotic transformations of 1,1,1-trichloroethane under methanogenic conditions
A common industrial solvent, 1,1,1-trichloroethane (TCA), is one of the most frequently found contaminants in ground water. The fate of TCA in ground water is complicated by the different possible abiotic and biotic transformations that it may undergo. Abiotic transformation of TCA can result in a mixture of 1,1-dichloro-ethylene (1,1-DCE) and acetic acid, as shown by others. This study confirms that TCA can be biotransformed by reductive dehalogenation to 1,1-dichloroethane (1,1-DCA) and chloroethane (CA) under methanogenic conditions. Also, reductive dehalogenation of 1,1-DCE to vinyl chloride (VC) is confirmed. This study demonstrates that these transformations can occur stoichiometrically. In addition, (/sup 14/C)TCA, (/sup 14/C)-1,1-DCA, (/sup 14/C)-1,1-DCE, (/sup 14/C)CA, and (/sup 14/C)VC were at least partially mineralized to /sup 14/CO/sub 2/ under similar methanogenic conditions.23 references, 3 figures, 4 tables.
- Research Organization:
- Michigan State Univ., East Lansing (USA)
- OSTI ID:
- 5089190
- Journal Information:
- Environ. Sci. Technol.; (United States), Vol. 21:12
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CHLORINATED ALIPHATIC HYDROCARBONS
BIODEGRADATION
DEHALOGENATION
GROUND WATER
CONTAMINATION
ANAEROBIC CONDITIONS
CARBON 14 COMPOUNDS
EXPERIMENTAL DATA
MINERALIZATION
STOICHIOMETRY
TRACER TECHNIQUES
CHEMICAL REACTIONS
DATA
DECOMPOSITION
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
WATER
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)
560300 - Chemicals Metabolism & Toxicology
520101 - Environment
Aquatic- Basic Studies- Radiometric Techniques- (-1989)