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Bacterial cycling of methyl halides
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Schafer, Hendrik, Miller, Laurence G., Oremland, Ronald S. and Murrell, J. C. (J. Colin) (2007) Bacterial cycling of methyl halides. Advances in Applied Microbiology, Volume 61 . pp. 307-346. doi:10.1016/S0065-2164(06)61009-5
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Official URL: http://dx.doi.org/10.1016/S0065-2164(06)61009-5
Abstract
This chapter focuses on the monohalogenated methanes methyl chloride (MeCl) and methyl bromide (MeBr), their natural and anthropogenic sources, and their degradation by microorganisms, specifically by aerobic bacteria that can use MeBr and MeCl as sole source of carbon and energy. The biogeochemical cycle of methyl halides and the microbiology, biochemistry, genetics, and biotechnological potential of methyl halide-degrading microorganisms are discussed in the chapter. Methyl halides are the dominant halocarbons in the atmosphere. They play an important role in regulating stratospheric ozone concentrations and global warming as well, two factors governing planetary habitability. The monohalomethanes—methyl chloride (MeCl), methyl bromide (MeBr), and methyl iodide (MeI)—are trace gases in the atmosphere with average tropospheric-mixing ratios of 600, 10, and 2 parts per trillion (ppt), respectively. However, methyl halides are radiatively active and hence contribute to global warming by absorbing radiation in the infrared region. This is evident in their elevated global warming potential (GWP), a value calculated to quantify each compound's warming effect (on a mass basis) relative to the same mass of CO2. Compounds with high GWP including those like methyl halides with low concentrations may have considerable impact on atmospheric warming when compared with other “greenhouse” gases with low GWP.
Item Type: | Journal Item | ||||
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Subjects: | T Technology > TP Chemical technology Q Science > QR Microbiology |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) > Biological Sciences ( -2010) | ||||
Series Name: | ADVANCES IN APPLIED MICROBIOLOGY | ||||
Journal or Publication Title: | Advances in Applied Microbiology | ||||
Publisher: | Academic Press | ||||
ISSN: | 0065-2164 | ||||
Official Date: | 2007 | ||||
Dates: |
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Volume: | Volume 61 | ||||
Number of Pages: | 40 | ||||
Page Range: | pp. 307-346 | ||||
DOI: | 10.1016/S0065-2164(06)61009-5 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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