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A model for methane production in sewers
Journal of Environmental Science and Health, Part A, 2014Most sewers in developing countries are combined sewers which receive stormwater and effluent from septic tanks or cesspools of households and buildings. Although the wastewater strength in these sewers is usually lower than those in developed countries, due to improper construction and maintenance, the hydraulic retention time (HRT) could be ...
Thitirat, Chaosakul +2 more
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Methane Production by Terrestrial Arthropods
2006Item does not contain ...
Hackstein, J.H.P. +2 more
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Numerical Simulation of Methane Production from a Methane Hydrate Formation
Industrial & Engineering Chemistry Research, 2008This paper describes a one-dimensional model for hydrate dissociation in porous media by the depressurization method. A moving boundary, which separates the total simulation zone into two zones, is used. The governing equations consider the convective-conductive heat transfer and mass transfer in the gas and hydrate zones together with the energy ...
LIU Y, STRUMENDO, MATTEO, ARASTOOPOUR H.
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Dissolved Methane Sensor for Methane Leakage Monitoring in Methane Hydrate Production
OCEANS 2006, 2006This paper describes the development of a dissolved methane sensor that will be used for the methane leakage monitoring in the methane hydrate production in Japan in the future. As for the requirements for the sensor, continuous, long-time use in a great water depth, real-time measurement, and outstanding response to the change of dissolved methane ...
T. Fukasawa +4 more
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Methane production by ruminants
Livestock, 2012Methane is produced from carbon dioxide and hydrogen as a by-product of rumen fermentation. Excess hydrogen is produced together with the production of acetate and butyrate but not with the production of propionate and valerate. Diets lower in fibre and higher in starch result in higher proportions of propionate in the rumen volatile fatty acids and ...
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The Development of Methane Production in Childhood and Adolescence
Journal of Pediatric Gastroenterology and Nutrition, 1985SummaryMethane concentration in the expired air was analyzed in 393 infants, children, and adolescents. There was no methane production below the age of 3 years. In the age group 3 4 years, 6.4% of the children produced methane. The percentages were 14.3 18.2% in children aged 7 14. A rise in methane production to 39.4 45.9% was recorded from age 14 to
Y, Peled +3 more
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Measuring Methane Production from Ruminants
Trends in Biotechnology, 2016Radiative forcing of methane (CH4) is significantly higher than carbon dioxide (CO2) and its enteric production by ruminant livestock is one of the major sources of greenhouse gas emissions. CH4 is also an important marker of farming productivity, because it is associated with the conversion of feed to product in livestock. Consequently, measurement of
Julian, Hill +4 more
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New England Journal of Medicine, 1974
Although gas production in the human intestinal tract has long been a topic of considerable interest to the lay public, this subject has received little scientific attention.
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Although gas production in the human intestinal tract has long been a topic of considerable interest to the lay public, this subject has received little scientific attention.
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Engineered methane biocatalysis: strategies to assimilate methane for chemical production
Current Opinion in BiotechnologyMethane (CH4), one of the greenhouse gases, is considered a promising feedstock for the biological production of fuels and chemicals. Although recent studies have demonstrated the capability of methanotrophs to convert CH4 into various bioproducts by metabolic engineering, the productivity has not reached commercial levels.
Nam Kyu Kang +2 more
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Production of Methanation Catalysts
1976Summary The basic requirements for a satisfactory nickel-based methanation catalyst are ease of reducibility, activity and stability. Plant designs usually require that the catalyst be reduced at a temperature no higher than reactor operating temperature.
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