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Prior to and during WW2 there were sporadic attempts at producing and using methane gas in digesters but no organized research. After the war the Chinese and Indian peoples developed the gas to help their energy deficient countries cope with its needs. ... However, using gas this way does cut into the gas production.
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www.jrwhipple.com/sr/nf_methane.html
www.jrwhipple.com/sr/nf_methane.html
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The following are links to several sources of information on the production of methane: ... The production of methane gas from organic waste, primarily manure, is easily accomplished with equipment designed for efficiency.
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www.jrwhipple.com/sr/fuel_making.html
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In one full-scale two-phase system + the Anodek process (Belgium) + 70-97% COD removal and biogas production of 3-13 Kg/m2 day with a methane content of 65 to 80% was obtained when operated at COD loads of 20-60 kg/m3/day for acidogenic fermentation (1st phase) and 6-30 kg/n^/day for methanogenic fermentation (2nd phase).
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www.fao.org/docrep/W7241E/w7241e0f.htm
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Methane production potential ... The immediate and obvious benefit from methane production is the energy value of the gas itself. Hence, the question most frequently asked concerning the process is: "How much gas will I get?" The answer to this question depends on several factors that determine the efficiency of the operation.
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extension.missouri.edu/publications/DisplayPub.aspx?P=G...
extension.missouri.edu/publications/DisplayPub.aspx?P=G1881
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Methane production is NOT a fermentation. There is no substrate level phosphorylation and ATP is generated via the PMF. However, the mechanism is still uncertain. Furthermore, since there are no cytochromes, flavins or quinones the electron transport chain must be quite different.
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www.science.siu.edu/microbiology/micr425/425Notes/10-Me...
www.science.siu.edu/microbiology/micr425/425Notes/10-Methane.html
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Leng (1993) provides data on world ruminant population densities, estimated methane production rates, and factors influencing methane production in "Quantitative Ruminant Nutrition - A Green Science." The author estimates that ruminants on low quality feeds produce more than 75 percent of the total livestock...
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www.ciesin.org/TG/AG/liverear.html
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According to an experiment detailed in "Factors Affecting Methane Production Under Rice," exogenous organic matter appears to be the largest contributor to methane production from flooded rice soils (Delwiche and Cicerone 1993). Figure 2 illustrates the influence of added organic matter on methane emissions from...
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www.ciesin.org/TG/AG/ricecult.html
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This is in agreement with laboratory studies of anoxic marine sediments sealed in jars, which indicate that methane production does not occur until dissolved sulfate is totally exhausted.
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www.sciencemag.org/cgi/content/abstract/185/4157/1167
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The researchers then were able to show that the rate of methane production grew drastically when the plants were exposed to the sun. Although the scientists have some first indications, it is still unclear what processes are responsible for the formation of methane in plants.
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www.physorg.com/news9792.html
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