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 “"ammonia emission"”.
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Gas-phase biofiltration for livestock building ammonia emission mitigation
… to mitigate certain livestock building ammonia emissions. Biofilters are bio-reactors that can absorb ammonia and then oxidize it into nitrite and nitrate using microorganisms. Woodchips and composts are often used as packing materials thus making it an affordable method. It was …
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Ammonia emission from fertiliser application : quantification techniques and mitigation strategies
… effectiveness of the applied fertiliser, ammonia (NH3) losses are responsible for environmental problems such as acidification and N enrichment of natural ecosystems, as well as public health problems related to particulate matter (aerosols) formation. In response to this situation, the …
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Compartmental Process-based Model for Estimating Ammonia Emission from Stored Scraped Liquid Dairy Manure
… processes responsible for production and emission of ammonia from stored liquid dairy manure are governed by environmental factors (e.g. manure temperature, moisture) and manure characteristics (e.g. total ammoniacal nitrogen concentration, pH). These environmental factors and manure …
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Ammonia Emissions from Dairy Manure Storage Tanks Affected by Diets and Manure Removal Practices
… objectives of this study were to determine: 1) ammonia emission rates from stored scraped and flushed manure from dairy cows fed either normal or low N diet; and 2) seasonal effects on ammonia emission rates from stored scraped and flushed dairy manure. Four pilot-scale tanks were used for …
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ANALYSIS OF AMMONIA RELEASE AND BEST AVAILABLE PRACTICES TO SUPPORT FARM MANAGEMENT IN THE REDUCTION OF AMMONIA EMISSIONS IN DAIRY HOUSES
… of this thesis work was to verify the levels of ammonia concentrations in different functional areas of naturally ventilated dairy houses, through the measurement of the concentrations of ammonia at different heights from the floor of the breeding environment, also in relation to the main inside …
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An Investigation of Local and Regionally Significant Non-Agricultural Sources of Ammonia in Toronto and the Great Lakes Region
Atmospheric ammonia is a significant environmental pollutant that contributes both to human mortality and morbidity and can also negatively influence ecosystem health. While the globally dominant source of ammonia pollution is agriculture, other sources may be influential on local and regional …
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A Process-Based Nutrient Model for the Bedded Manure Pack of Confined Beef Systems
… model that predicts concentration and gaseous emission from the bedded manure pack of a confined beef cattle system, with respect to different bedding material, manure storage time, and ambient temperature. The model incorporated the data collected in three experiments designed to understand …
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Valoración energética del residuo avícola, impacto económico-ambiental y análisis experimental en Europa de la reducción de amoniaco en explotaciones avícolas mediante compuesto encimático
… some potential risks to the environment due to emissions of greenhouse gases, acid rain and other pollutants. Consequently European policies are focused on environmental protection, sustainable agricultural and livestock production, and particularly to the health and welfare of animals intended …
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Impact of spatial and temporal distribution of ammonia emissions from chemical fertilizer usage on predictions of air quality in the Midwest United States
Ammonia (NH3) is a precursor to ambient particulate matter (PM). PM is regulated to protect human health and visibility. Atmospheric deposition of NH3 and other reactive nitrogen compounds exacerbates surface water eutrophication, soil acidity and ecosystem damages. Accurate prediction of impacts …