Activation Energy of Urea Hydrolysis and Ammonia Henry Constant Effects on Ammonia Release from Confined Animal Feeding Operations (CAFOs)

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Abstract

Ammonia emissions from cattle feedlots have been a topic for much debate regarding air quality and environmental impacts. With increasing concern about future regulation of the industry, understanding the fundamentals of ammonia emission and volatilization from feedlots has become crucial.…

Estimating Ammonia Emissions from Livestock Operations Using Low-Cost, Time-Averaged Concentration Measurements

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Abstract

Recent regulations on ammonia (NH3) and other gaseous emissions by the EPA requires managers of animal feeding operations (AFOs) to report their annual emissions of greenhouse gases (GHGs), with the possibility of federal funding in the near future to be allocated for enforcement of GHG reporting as well as to levy large fines against AFOs that exceed the regulation limitations for GHG emissions.…

Ammonia Mitigation and Capture as a Liquid Fertilizer from Manure Using Gas-Permeable Membrane

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Why Capture Ammonia Released from Animal Manure?

Excessive emissions of ammonia (NH3 ) from animal manure negatively impact the environment with potential to pollute air, soil and water, and produce malodors. The objective of this study was to assess NH3 mitigation from liquid dairy manure (LM) using tubular acid-filled gas-permeable membranes (GPM) in laboratory experiments; and, to evaluate the possibility of scaling up the NH3 mitigation system for use on AFOs.…