Characterizing ammonia emissions from a commercial mechanically ventilated swine finishing facility and an anaerobic waste lagoon in North Carolina

Developmental Biology

Kristen M. James²  Viney P. Aneja¹  Ian C. Rumsey⁴  Jessica Blunden³ 

[1] Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695–8208, U.S.A.$$Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695–8208, U.S.A.$$;Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695–8208, U.S.A.$$Currently at: Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, U.S.A.$$;Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695–8208, U.S.A.$$Currently at: National Oceanic and Atmospheric Administration (NOAA), National Climate Data Center, Asheville, NC 28801, U.S.A.$$;Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695–8208, U.S.A.$$Currently at: National Risk Management Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, U.S.A.$$

关键词: Ammonia emissions;    Swine CAFO;    Lagoon emissions;    Barn emissions measurements;   

DOI  :  10.5094/APR.2012.031

学科分类：农业科学（综合）

来源: Dokuz Eylul Universitesi * Department of Environmental Engineering

【 摘 要 】

Emissions of atmospheric ammonia–nitrogen [NH₃–N, where NH₃–N = (14/17) NH₃] were measured from a commercial anaerobic swine waste treatment lagoon and from an on–site finishing swine confinement house at the same location. Continuous measurements were made at each potential NH₃–N source for ~1 week during four different seasons. Results presented here represent measurements made for the second year of a multi–year experiment. Barn emissions were estimated to be 2 604 ± 660 g NH₃–N day⁻¹, 1 761 ± 1 087 g NH₃–N day⁻¹, 1 657 ± 1 506 g NH₃–N day⁻¹, and 2 659 ± 1 194 g NH₃–N g day⁻¹ in summer, fall, winter, and spring respectively. NH₃–N barn emission factors were calculated to be 1.32 ± 0.32 kg NH₃–N animal⁻¹ yr⁻¹, 0.78 ± 0.49 kg NH³–N animal⁻¹ yr⁻¹, 1.55 ± 1.40 kg NH₃–N animal⁻¹ yr⁻¹, and 1.35 ± 0.61 kg NH³–N animal⁻¹ yr⁻¹ in summer, fall, winter, and spring respectively. Average NH₃–N flux from lagoon was greatest in the summer, >3 943 μg m⁻² min⁻¹, and lowest in the winter, 981 ± 210 μg m⁻² min⁻¹. Fall and spring average NH₃–N flux values were >1 383 μg m⁻² min⁻¹ and 1 641 ± 362 μg m⁻² min⁻¹, respectively.

【 授权许可】

Unknown   

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