Odor Emissions and Chemical Analysis of Odorous Compounds from Animal Buildings

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Odor emissions from animal production buildings are a critical local issue according to the 2003 National Research Council report to the livestock and poultry industries. Even though federal and some state agencies do not regulate odors, emission of odorous compounds remains a high priority for animal producers (for siting new and expanding existing operations) and for neighbors living near livestock and poultry operations. There is limited data presently available for odor emission factors from animal confinement buildings. Odor emission data are needed as inputs for dispersion models so odor concentrations can be calculated for existing and future livestock and poultry operations, and utilized for the addition of control technologies on current operations and the siting and design of new facilities. This study supplemented the National Air Emissions Monitoring Study (NAEMS) by making comprehensive measurements, over a full calendar year, of odor emissions from four swine and four dairy buildings (subset of the total number of buildings monitored for the NAEMS project). Odor monitoring was not included in the NAEMS project because the EPA does not regulate it. The measurements made in this project included both standard human sensory measurements using dynamic forced-choice olfactometer and a novel chemical analysis technique for odorous compounds found in these emissions. The sensory and chemical methods have been correlated to gain both quantitative and qualitative understanding of odor emissions from animal buildings.

Keywords: Odorous Compounds; Odors; Olfactometry; Volatile Organic Compounds

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864710802767876

Publication date: January 1, 2010

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