Fundamentals of methanogenic pathways that are key to the biomethanation of complex biomass.

Fundamentals of methanogenic pathways that are key to the biomethanation of complex biomass.
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DOI:
10.1016/j.copbio.2011.04.011
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发表时间:
2011-06
影响因子:
7.7
通讯作者:
Ferry, James G.
Ferry, James G.
中科院分区:
工程技术1区
文献类型:
--
作者:
Ferry, James G.

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生物质转化为CH4(生物甲烷化)涉及由至少三个代谢组组成的厌氧微生物食物链,其中前两个代谢组将复杂的生物质主要分解为乙酸盐、甲酸盐和H2。这些转换的热力学是不利的,需要与CH4产生组(产甲烷菌)的共生,代谢的分解产物到有利的浓度。产甲烷菌通过两种主要途径产生CH4,乙酸酯的甲基的转化和与甲酸酯或H2的氧化偶联的CO2的还原。这篇综述涵盖了最近的进展,在基本的理解都产甲烷途径,以刺激研究,提高整体生物甲烷化过程的速率和可靠性。
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 H2. 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 H2. 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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