Air Pollution from Agricultural Operations III
Research Triangle Park, NC
An ongoing project of monitoring ammonia (NH 3 ) emissions from U.S. layer houses with two different housing and management schemes is reported in this paper. Ammonia and carbon dioxide concentration levels were collected bi-weekly from each house with portable monitoring units (PMUs). There existed substantial seasonal variations in NH 3 emission from the layer houses. Specifically, daily mean NH 3 concentrations ranged from 1 to 7 ppm in the manure belt house and from 9 to 108 ppm in the high-rise house. The NH 3 emission rates averaged 6 mg/hr-hen or 44 g/d-500kg over a 12-month monitoring period (February 2002 – March 2003) for the manure belt house and 44 mg/h-hen or 331 g/d-500kg over a 10-month monitoring period (February – November 2002) for the high-rise house. Ammonia emission rates are higher in summer than in winter, although NH 3 concentration may be much lower in summer.
American Society of Agricultural Engineers
Liang, Yi; Xin, Hongwei; Tanaka, Akihiro; Lee, S. H.; Li, Hong; Wheeler, Eileen F.; Gates, Richard S.; Zajaczkowski, Jennifer L.; Topper, Patrick A.; and Casey, Kenneth D., "Ammonia Emissions from U.S. Poultry Houses: Part II—Layer Houses" (2003). Agricultural and Biosystems Engineering Conference Proceedings and Presentations. 131.