Hydrogen Sulfide and Ammonia Receptor Concentrations in a Community of Multiple Swine Emission Sources: Preliminary Study
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Since 1905, the Department of Agricultural Engineering, now the Department of Agricultural and Biosystems Engineering (ABE), has been a leader in providing engineering solutions to agricultural problems in the United States and the world. The department’s original mission was to mechanize agriculture. That mission has evolved to encompass a global view of the entire food production system–the wise management of natural resources in the production, processing, storage, handling, and use of food fiber and other biological products.
History
In 1905 Agricultural Engineering was recognized as a subdivision of the Department of Agronomy, and in 1907 it was recognized as a unique department. It was renamed the Department of Agricultural and Biosystems Engineering in 1990. The department merged with the Department of Industrial Education and Technology in 2004.
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1905–present
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- Department of Agricultural Engineering (1907–1990)
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- College of Agriculture and Life Sciences (parent college)
- College of Engineering (parent college)
- Department of Industrial Education and Technology, (merged, 2004)
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Abstract
A Mobile Ambient Laboratory (MAL) was placed at a residence in a community with two swine-barn emission sites and one land application area to observe real-time atmospheric stability, ammonia (NH3) and hydrogen sulfide (H2S) concentrations surrounding and within the residence during a 12-week period. Significant differences in NH3 and H2S concentrations with atmospheric stability were found. For NH3, significantly higher concentrations were measured inside the residence compared to ambient NH3 concentrations, and these levels were not correlated with outside ambient conditions. For H2S, significantly higher levels were measured outside the residence for downwind occurrences during low wind (=0.45 m s-1) and low solar (<10 W m-2) conditions indicative of very stable atmospheres. The concentrations and durations of NH3 and H2S measured in the ambient air surrounding the residence were far below recommended Minimum Risk Levels published by the U.S. Department of Health and Human Service's, Agency for Toxic Substances and Disease Registry, for the protection of sensitive populations.
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This article is from Applied Engineering in Agriculture 24, no. 6 (2008): 839–851.