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Emissions of NH3, H2S, VOC, PM10 and PM2.5 from swine production facilities in North America: a meta-analysis

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  131594405,  2013 Kansas City, Missouri, July 21 - July 24, 2013. (doi: @2013
Authors:   Zifei Liu, Wendy Powers
Keywords:   Review pigs manure air quality environment

Abstract. The goal of this project is to collect currently available measured emissions data or property line concentration data and integrate the results through meta-analysis for air emissions of NH3, H2S, VOC, PM10 and PM2.5 from live swine production facilities in North America, including manure storage systems; and to interpret implication of these data relative to existing or potential federal regulations. Results from more than 80 studies have been identified and included in the analysis. Data from reports of the eleven swine sites (IA4B, NC3B, NC4B, OK4B, IN3B, IN4A, NC4A, OK4A, IA4A, NC3A, and OK3A) in the National Air Emissions Monitoring Study (NAEMS) were also included. Histograms of emission rates usually show a skew-right distribution so that the medians were more robust than means. The median emission rates from swine houses were 2.78, 0.09, 0.44, 0.09, and 0.015 kg yr-1hd-1, for NH3, H2S, VOC, PM10 and PM2.5, respectively. The median emission rates from swine storage facilities were 2.08, 0.20, and 0.75 kg yr-1hd-1, for NH3, H2S and VOC, respectively. Accordingly, sizes of swine farm that may trigger the need to report under the Emergency Planning and Community Right-to-Know Act (EPCRA) were 3,410 head for NH3 and 57,700 head for H2S (emissions exceeding 100 lb/day). The average concentrations at the edge of swine houses or lagoons were 5.5±5.2ppm and 40±48ppb, 2.6±7.9 mg m-3, for NH3, H2S and VOC respectively. The NH3 and H2S concentrations decreased to 66±66ppb and 5.1±4.1ppb at the distances from 30~1185m from emission sources.

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