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Methods of reducing ammonia emission from animal husbandry to protect animal feeding operators

Duan, Shuting (2018) Methods of reducing ammonia emission from animal husbandry to protect animal feeding operators. Master Essay, University of Pittsburgh.

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Abstract

Nitrogen (N) is converted into different types of product during the nitrogen cycle, which is one of the most important processes conducted in the biosphere. However, ammonia (NH3), one of the intermediate products, is poisonous to the environment, animal and human health. Therefore, NH3 emissions have been considered a public health issue for long time. Atmospheric ammonia is detected increasing in major agricultural areas in the world, especially in animal husbandry. When working in those animal husbandry areas, the animal feeding operators are exposed to higher concentration of NH3 than workers who do not work in such places; therefore, are facing higher risk of ammonia-related diseases (most of which are respiratory diseases). Several solutions might be used to reduce NH3 exposure. Increasing O2 concentration in the intestine, manipulating microbiome groups in the guts, using crude protein (CP) reduced diets with amino acid supplementation, urine-feces segregation, urease inhibitor, NH4+ binding materials, and manure or slurry acidification can lower the HN3 emissions. However, such methods are either not practical, or not cost-effective. At present, a new technique of nanoparticle application, using photocatalytic TiO2 painted on livestock building walls, seems to be the most cost-effective way to reduce indoor NH3 concentrations.


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Details

Item Type: Other Thesis, Dissertation, or Long Paper (Master Essay)
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Duan, ShutingSHD66@pitt.eduSHD66
Contributors:
ContributionContributors NameEmailPitt UsernameORCID
Committee ChairPeterson, Jamesjimmyp@pitt.eduUNSPECIFIEDUNSPECIFIED
Committee MemberPearce, Lindalip10@pitt.eduUNSPECIFIEDUNSPECIFIED
Committee MemberCastle, Nicholascastlen@pitt.eduUNSPECIFIEDUNSPECIFIED
Date: 10 December 2018
Date Type: Submission
Number of Pages: 32
Institution: University of Pittsburgh
Schools and Programs: Graduate School of Public Health > Environmental and Occupational Health
Degree: MPH - Master of Public Health
Thesis Type: Master Essay
Refereed: Yes
Date Deposited: 14 Feb 2019 20:34
Last Modified: 14 Feb 2019 20:35
URI: http://d-scholarship.pitt.edu/id/eprint/35578

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