Production of ethane, ethylene, and acetylene from halogenated hydrocarbons by methanogenic bacteria
Several methanogenic bacteria were shown to produce ethane, ethylene, and acetylene when exposed to the halogenated hydrocarbons bromoethane, dibromo- or dichloroethane, and 1,2-dibromoethylene, respectively. They also produced ethylene when exposed to the coenzyme M analog and specific methanogenic inhibitor bromoethanesulfonic acid. The production of these gases from halogenated hydrocarbons has a variety of implications concerning microbial ecology, agriculture, and toxic waste treatment. All halogenated aliphatic compounds tested were inhibitory to methanogens. Methanococcus thermolithotrophicus, Methanococcus deltae, and Methanobacterium thermoautotrophicum ..delta..H and Marburg were completely inhibited by 7 ..mu..M 1,2-dibromoethane and, to various degrees, by 51 to 1084 ..mu..M 1,2-dichloroethane, 1,2-dibromoethylene, 1,2-dichloroethylene, and trichloroethylene. In general, the brominated compounds were more inhibitory. The two Methanococcus species were fully inhibited by 1 ..mu..M bromoethanesulfonic acid, whereas both Methanobacterium strains were only partly inhibited by 2124 ..mu..M. Coenzyme M protected cells from bromoethanesulfonic acid but not from any of the other inhibitors.
- Research Organization:
- Univ. of Iowa, Iowa City
- OSTI ID:
- 5987846
- Journal Information:
- Appl. Environ. Microbiol.; (United States), Journal Name: Appl. Environ. Microbiol.; (United States) Vol. 53:7; ISSN AEMID
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
090122* -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
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63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACETYLENE
ALKANES
ALKENES
ALKYNES
BACTERIA
BIODEGRADATION
BIOSYNTHESIS
CHEMICAL REACTIONS
DECOMPOSITION
ETHANE
ETHYLENE
GROWTH
HYDROCARBONS
METHANOGENIC BACTERIA
MICROORGANISMS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
SYNTHESIS