Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 123 for “"Methane Production"”.
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Pathways of Methane Production in the Bovine Rumen
Made available in DSpace on 2014-12-05T23:07:56Z (GMT). No. of bitstreams: 1 6000223.pdf: 4197323 bytes, checksum: fb307d3f8fc97374d7fc2fcbe7fe2ed1 (MD5) Previous issue date: 1959
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Thermophilic Methane Production and Methanogenic Bacteria From Cattle Waste
Made available in DSpace on 2014-12-14T15:29:40Z (GMT). No. of bitstreams: 1 7804185.pdf: 3849748 bytes, checksum: 7fc2cd0bbfe8b625d9bbd68869ed0dac (MD5) Previous issue date: 1977
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Mechanisms of Microbial Methane Production from Sub-Bituminous Australian Coal
Biogenic methane production from coal necessarily involves a community of microorganisms acting in concert. The large, lignin-like molecules in coal cannot be metabolised by methanogens and other microorganisms are required to catalyse the breakdown of coal to acetate, hydrogen and carbon dioxide. …
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Design and investigation of renewable natural gas and methane production systems
… and investigation of renewable natural gas and methane production systems. The thesis comprises a theoretical and an experimental portions. The experimental portion of the thesis includes the design, construction, and experimental testing of a new helical fixed-bed reactor, as well as a …
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Methane Production by a Packed-Bed Anaerobic Digester Fed Dairy Barn Flush Water
… an alternative to covered lagoon digesters for methane production and anaerobic treatment of dilute wastewaters such as dairy barn flush water. The physical media of packed-beds retain biofilms, often allowing increased treatment rates. Previous studies have evaluated several types of media for …
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Investigating the ecological controls on methane production in a riparian cottonwood forest and adjacent river
… communities and their metabolic processes of methane production in the Oldman River sediment and adjacent riparian cottonwood tree stems in southern Alberta. Carbon (C) and nitrogen (N) content in tree stems and river sediment environments were measured, while molecular genetic techniques and …
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Feasibility study of methane production from Rocky Mountain coal seams using "oil-field" techniques, A
Includes bibliographical references (pages 85-91).
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Thermodynamic and kinetic processes associated with CO 2-sequestration and CO 2-enhanced coalbed methane production from unminable coal seams
… in combination with CO2-enhanced coalbed methane production in unminable coal seams. This combination is regarded as a viable and promising option to reduce anthropogenic CO2-emissions. At the moment numerous world-wide research projects investigate the feasibility of this concept under …
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Nutrient content and the effects of feeding four Namibian encroacher bush species on growth, methane production and carcass characteristics of Damara sheep
… sacco neutral detergent fibre digestibility and methane production on the same samples above were evaluated. In the third experiment, milled bush biomass was evaluated as alternative roughage source in total mixed rations fed to five castrated 13 month old Damara sheep, with an average initial …
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Bioremediation of Pcb Contaminated Surface Soil: A Microcosm Study
… amounts of soil and inoculum. Total gas production in the microcosms was monitored during 30 days of incubation, using a glass syringe. Total methane production in the microcosms was quantitated using GC. Toxicity of the soil on the methanogenic inoculum was determined based on the …
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Evaluating the potential for improving anaerobic digestion of cellulosic waste via routine bioaugmentation and alkaline pretreatment
… four co-products would be generated namely, methane-rich biogas, fertilizer, single cell protein, and algal biomass. The first objective of this study was to determine whether bioaugmentation with a cellulolytic bioculture would result in increased methane production compared to a …
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Assessment of methane emission traits in Canadian Holstein cows
Enteric methane production from ruminants represents a loss of productive energy and contributes to greenhouse gas emissions. This thesis presents a phenotypic data description and genetic parameter estimates of three methane emission traits (methane production, yield, and intensity) in Canadian …
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Impact of metallic nanoparticles on anaerobic digestion
… at the concentration of 40 mg/L did not inhibit methane production, as more than 90% of AgNPs were removed from the liquid to the associated sludge while almost no silver ions were released from AgNPs under anaerobic sludge digestion conditions. In a bench-scale landfill bioreactor study, …
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Dairy Manure Flushwater Treatment by Packed-Bed Anaerobic Digesters
… in the media bed and to improve biogas production and organic matter removal at ambient temperatures. Reciprocation has been used in biological nitrogen removal systems to introduce air into the system to repeatedly oxygenate nitrifying biofilm along with mixing (Behrends et al. 2003), …
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Cellulose mineralization in two-stage anaerobic digestion systems
… were examined in both the thermo-meso and acid-methane two-stage systems under different hydraulic retention times (HRTs), feed concentrations and organic loading rates (OLRs). The emphasis of this research was to characterize the similarities and differences between these two processes;The …
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The marine geochemistry of methane
… coastal surface waters near Walvis Bay, methane is present in concentrations considerably above those which would be predicted from solubility equilibrium with the atmosphere. A one dimensional diffusive model and a one dimensional horizontal advection diffusion model were used to …
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Development of gas production type curves for coalbed methane reservoirs
Coalbed methane is an unconventional gas resource that consists on methane production from the coal seams. The unique coal characteristic results in a dual-porosity system. CBM reservoir performance is also influenced by the interrelationship of reservoir, geologic, and operation parameters. …
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Impact of Langmuir isotherm on production behavior of CBM reservoirs
Coalbed Methane is an unconventional gas resource that consists of methane production from the coal seams. CBM reservoir performance is also influenced by the interrelationship of reservoir, geologic, and operation parameters. Coalbed methane production performance is considered complex and …
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Impact of Ammonia and Long Chain Fatty Acids on Thermophilic Anaerobic Digestion of Swine Wastes
… of wastes originating from agricultural production and animal processing represents a potential waste treatment technology to address environmental concerns such as odor emissions and removal of pathogenic microorganisms, while at the same time producing renewable energy (biogas) as a …
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