期刊
CURRENT OPINION IN BIOTECHNOLOGY
卷 22, 期 3, 页码 351-357出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.copbio.2011.04.011
关键词
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资金
- NIH
- DOE
- NSF
- NASA
The conversion of biomass to CH4 (biomethanation) involves an anaerobic microbial food chain composed of at least three metabolic groups of which the first two decompose the complex biomass primarily to acetate, formate, and H-2. The thermodynamics of these conversions are unfavorable requiring a symbiosis with the CH4-producing group (methanogens) that metabolize the decomposition products to favorable concentrations. The methanogens produce CH4 by two major pathways, conversion of the methyl group of acetate and reduction of CO2 coupled to the oxidation of formate or H-2. This review covers recent advances in the fundamental understanding of both methanogenic pathways with the view of stimulating research towards improving the rate and reliability of the overall biomethanation process.
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