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 11 of 11 for “"Cow Manure"”.
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Towards development of biogas production for New Zealand on-farm greenhouse gas reduction
The current non-circular approaches to farm dairy manure management in New Zealand (NZ) have prompted research into alternative strategies. Anaerobic digestion (AD), by capturing methane as biogas and producing biofertiliser, offers a promising solution to reduce greenhouse gas (GHG) emissions and …
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Bioremediation of Effluent Water in a Coal Ash Disposal Area: Optimizing Microbial Sulfate Reduction
… acetic acid, lactic acid, mushroom compost, and cow manure were analyzed through a series of laboratory experiments treating flask wetland microcosms with varying concentrations of carbon sources to test their efficiency in improving SRB reduction. Mud substrate from an active wetland on site of …
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Oviposition Preferences for Infusion-Baited Traps and Seasonal Abundance of Culex Mosquitoes in Southwestern Virginia
… In 2003, the attractiveness of four infusions (cow manure, straw, grass, and rabbit chow) were compared in oviposition traps. For Cx. restuans, the manure infusions collected more egg rafts than the other three infusions for the first four weeks, with two of the weeks showing significance. …
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Viability of substitution of electricity with biogas for thermal uses at Neudamm campus of the University of Namibia
… cost and the underutilisation of livestock manure as a renewable energy resource. A 100 L digester, constructed from locally available materials, was fed with a cow manure-water slurry and operated over a 60-day period. Key operational parameters included an estimated 30-day hydraulic …
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Energy valorization of agro-industrial wastes and sweet sorghum for the production of gaseous biofuels through anaerobic digestion
… wastewater (OMW), cheese whey (CW) and liquid cow manure (LCM)) and sweet sorghum stalks. Olive mills, cheese factories and cow farms are agro-industries that represent a considerable share of the worldwide economy with particular interest focused in the Mediterranean region. These industries …
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Small-Scale Batch-Fed Biomass Gasification and Combustion
… higher ash content fuels, wheat straw, sheep manure and cow manure, a higher primary air flow was associated with greater process temperatures and a rise in the cold gas efficiency. Conversely, a threefold increase of the air supply led to double the PM2.5 combustion emissions from wood …
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Moving Virginia Dairy Farms Toward Phosphorus Balance
… P in farm soils through routine applications of manure, which over time contributes to surface water quality issues. The objectives of this research centered on guiding dairy farms in Virginia toward lower, more sustainable P balance, and without adversely impacting profitability. First, the …
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Effect of agronomic practices using organic amendments on selected chemical properties of soils in Chipata and Kasama, Zambia
… vogelii alley cropping, sun hemp, cattle manure, and chemical fertilizer were used. At the end of each season, soil samples were collected from research plots and tested for soil organic matter (SOM), CEC, pH, exchangeable acidity, total N, available P and exchangeable K. Maize grain …
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Effect of agronomic practices using organic amendments on selected chemical properties of soils in Chipata and Kasama, Zambia
… vogelii alley cropping, sun hemp, cattle manure, and chemical fertilizer were used. At the end of each season, soil samples were collected from research plots and tested for soil organic matter (SOM), CEC, pH, exchangeable acidity, total N, available P and exchangeable K. Maize grain …
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Sorption and degradation of pesticides in biopurification systems
… capacity: sandy loam soil < willow chopping, cow manure < straw, coco chips, compost < peat mix. Finally, it could be observed that the sorption capacity was in this case strongly correlated with the organic carbon content, CaO content and the cation exchange capacity. The second and major …
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Producción de biohidrógeno a partir de estiércol de res y lactosuero en fermentación oscura
Este trabajo propone una alternativa ecológica a los combustibles fósiles tradicionales, centrada en la obtención de biohidrógeno mediante el aprovechamiento de residuos orgánicos como el estiércol bovino y el lactosuero, con el fin de mitigar las emisiones de gases de efecto invernadero. Para ello …