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Swine Emissions

 

Meta-Analysis of Air Emissions from Swine Production Facilities in North America

A meta-analysis has been performed on air emissions from swine production facilities in North America. Emissions data from published papers and reports of the eleven swine sites in the NAEMS were compiled. Swine hoop houses had higher NH3 emission rates than other manure-handling systems, whereas deep pit houses had the highest H2S emission rates. Farrowing houses had the highest H2S emission rates, followed by gestation houses, and finishing houses had the lowest H2S emission rates. The ranges of emission rates of odor, VOC, NH3, H2S from swine houses, as well as concentrations at the edge of swine facilities are presented in Table 1.

Table 1. Emission rates from swine facilities and concentrations at the edge of swine facilities for odor, VOC, NH3, and H2S.

 

Concentrations at the Edge

of Swine Facilities

Emission Rates

from Swine Houses

Emission Rates

from Manure Storage Facilities

Odor

120 (40~960) OU/m3[a]

5 (0.4~24) OU/s/pig[b]

5 (1~17) OU/s/m2[c]

VOC

50 (1~27700) µg/m3[d]

0.4 (0~4.4) kg/yr/pig[e]

1.4 (0~6.2) kg/yr/pig[f]

NH3

6 (0.3~16) ppm[g]

2.8 (0~32) kg/yr/pig[h]

2.1 (0~23) kg/yr/pig[h]

H2S

20 (2~115) ppb[i]

0.1 (0~3.1) kg/yr/pig[h]

0.2 (0~1.3) kg/yr/pig[h]

Note: Values before the parentheses are medians; values within the parentheses are ranges reported in literature.

References:

[a]     Lim et al., 2001; Lim et al., 2003; Godbout et al., 2009;. Rahman and Newman, 2012.

[b]    Jacobson et al., 2003; Lim et al., 2003; Lim et al., 2004; Sun et al., 2010.

[c]     Heber et al., 2000a,b; McGahan et al., 2001; Lim et al., 2003; Bicudo et al., 2004.

[d]    Schiffman et al., 2001; Zahn et al., 2001b; Hermandez et al., 2012; Parker et al., 2012.

[e]     Heber, 2010; Li et al., 2011.

[f]     Zahn et al., 1997; Zahn et al., 2001b; Bicudo et al., 2004; Rumsey et al., 2012.

[g]    Lim et al., 2000a; Childers et al., 2001; Zahn et al., 2001b; Walker et al., 2008.

[h]    Liu et al, 2013.

[i]     Zahn et al., 2001b; Lim et al., 2003; Hoff et al., 2009; Thorne et al., 2009.