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Showing 1 to 13 of 13 for “"manure storage"”.
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Ammonia Emissions from Dairy Manure Storage Tanks Affected by Diets and Manure Removal Practices
… 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 manure storage with different treatments - scraped manure …
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Compartmental Process-based Model for Estimating Ammonia Emission from Stored Scraped Liquid Dairy Manure
… 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 characteristics vary spatially as a result of …
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Hydrogen Sulfide Emission and Control Parameters From Stored Liquid Swine Manure
… to reduce H$\sb2$S production from liquid swine manure. Nitrates were quickly depleted in the first two days of manure storage. The presence of nitrate was observed to reduce H$\sb2$S concentration in the manure quite significantly. However, sulfides were not removed completely from the liquid …
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Estimating Bacterial Loadings to Surface Waters from Agricultural Watersheds
… and Escherichia coli (EC) over time in: 1) dairy manure storage ponds and turkey litter storage sheds, 2) pasture and cropland soils to which dairy manure was applied, and 3) beef and dairy fecal deposits. The dairy manure storage ponds were sampled just under the pond surface. The FC and EC …
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Managing ground water contamination from agricultural nitrates
… practiced approaches of cost sharing for manure storage facility construction and nutrient management planning. Greater loading reductions are achievable through presently untried policies of land use restrictions, bans on purchase of commercial fertilizer, and imposition of standards on …
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Mineralization of Nitrogen in Liquid Dairy Manure During Storage
Loss of nitrogen (N) from dairy manure during storage is an issue of economic, environmental, and social concern for farming communities. The lost N 1) decreases the value of manure as a fertilizer and is an economic loss because supplemental inorganic N fertilizer is purchased to meet N needs on …
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Evaluation of a mechanical foam mitigation device
Foam production in deep-pit swine manure storages has become a significant problem for the swine industry in recent years. Foaming creates management and safety issues for swine producers, including increased risk of flash fires or explosions and reduced manure storage capacity. Due to these …
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A model for predicting bacteria concentrations in runoff from agricultural lands
… lands carrying microorganisms from livestock manure can contaminate the food and water supplies of both animals and humans. Planning and design of animal waste best management practices (BMPs) thus becomes more important as livestock populations become more concentrated. A computer model is …
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Integrating Machine Learning Into Process-Based Modeling to Predict Ammonia Losses From Stored Liquid Dairy Manure
Storing manure on dairy farms is essential for maximizing its fertilizer value, reducing management costs, and minimizing potential environmental pollution challenges. However, ammonia loss through volatilization during storage remains a challenge. Quantifying these losses is necessary to inform …
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A Process-Based Nutrient Model for the Bedded Manure Pack of Confined Beef Systems
<p>Manure management is of growing concern for beef cattle producers and the general public. The overall objective of this research was to develop a process-based model that predicts concentration and gaseous emission from the bedded manure pack of a confined beef cattle system, with respect to …
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Value of information for targeting agro-pollution control: a case study of the lower Susquehanna watershed
… for dairy farmers in the Lower Susquehanna are manure incorporation and storage, eliminating or reducing winter manure spreading, and using more strip-cropping. The value of perfect information was found to exceed the value of partial information in the study area because the total control costs …
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Reaction mechanisms of hydrothermal liquefaction of model compounds and biowaste feedstocks
… oil from many biomass sources. Previously, swine manure has been successfully converted into bio-crude oil through HTL with yield as high as 70% of the volatile solids at the University of Illinois at Urbana-Champaign. To further understand the fundamental mechanisms of HTL and to provide …
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Microbiome Metabolism in the Rumen of Bovine Grazing Toxic Tall Fescue and in Stored Dairy Manure
… pathways mediating nitrogen loss in two dairy manure storage systems, the clay-lined Earthen Pit (EP) and aboveground concrete storage tank (CS) on two commercial dairy farms, to develop strategies to minimize these losses. We first developed a catalog of the archaea and bacteria that were …