TY - JOUR
T1 - TSP, PM10, and PM2.5 emissions from a beef cattle feedlot using the flux-gradient technique
AU - Bonifacio, Henry F.
AU - Maghirang, Ronaldo G.
AU - Trabue, Steven L.
AU - McConnell, Laura L.
AU - Prueger, John H.
AU - Bonifacio, Edna R.
N1 - Funding Information:
This study was supported by U.S. Department of Agriculture (USDA) National Institute of Food and Agriculture (NIFA) (Project No. 2009-35112-3544), and USDA Agricultural Research Service (ARS) . Technical assistance provided by Darrell Oard and Howell Gonzales of Kansas State University; Dr. Li Guo, Dr. Orlando Aguilar, and Curtis Leiker, formerly of Kansas State University; Dr. Kenwood Scoggin of USDA ARS, Ames, Iowa; and Dr. Bernardo Predicala of Prairie Swine Centre Inc., Saskatoon, Saskatchewan, Canada is acknowledged. Cooperation of feedlot operators and KLA Environmental Services, Inc. is also acknowledged. This is contribution number 14-380-J from the Kansas Agricultural Experiment Station.
Publisher Copyright:
© 2014.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Emissions data on air pollutants from large open-lot beef cattle feedlots are limited. This research was conducted to determine emissions of total suspended particulates (TSP) and particulate matter (PM10 and PM2.5) from a commercial beef cattle feedlot in Kansas (USA). Vertical particulate concentration profiles at the feedlot were measured using gravimetric samplers, and micrometeorological parameters were monitored with eddy covariance instrumentation during the nine 4- to 5-day intensive sampling campaigns from May 2010 through September 2011. Emission fluxes were determined from the measured concentration gradients and meteorological parameters using the flux-gradient technique. PM ratios based on calculated emission fluxes were 0.28 for PM2.5/PM10, 0.12 for PM2.5/TSP, and 0.24 for PM10/TSP, indicating that a large fraction of the PM emitted at the studied feedlot was in the coarse range of aerodynamic diameter, >10 μm. Median daily emission factors were 57, 21, and 11 kg 1000-head (hd)-1 d-1 for TSP (n = 20 days), PM10 (n = 19 days), and PM2.5 (n = 11 days), respectively. Cattle pen surface moisture contents of at least 20-30% significantly reduced both TSP and PM10 emissions, but moisture's effect on PM2.5 emissions was not established due to difficulty in measuring PM2.5 concentrations under low-PM conditions.
AB - Emissions data on air pollutants from large open-lot beef cattle feedlots are limited. This research was conducted to determine emissions of total suspended particulates (TSP) and particulate matter (PM10 and PM2.5) from a commercial beef cattle feedlot in Kansas (USA). Vertical particulate concentration profiles at the feedlot were measured using gravimetric samplers, and micrometeorological parameters were monitored with eddy covariance instrumentation during the nine 4- to 5-day intensive sampling campaigns from May 2010 through September 2011. Emission fluxes were determined from the measured concentration gradients and meteorological parameters using the flux-gradient technique. PM ratios based on calculated emission fluxes were 0.28 for PM2.5/PM10, 0.12 for PM2.5/TSP, and 0.24 for PM10/TSP, indicating that a large fraction of the PM emitted at the studied feedlot was in the coarse range of aerodynamic diameter, >10 μm. Median daily emission factors were 57, 21, and 11 kg 1000-head (hd)-1 d-1 for TSP (n = 20 days), PM10 (n = 19 days), and PM2.5 (n = 11 days), respectively. Cattle pen surface moisture contents of at least 20-30% significantly reduced both TSP and PM10 emissions, but moisture's effect on PM2.5 emissions was not established due to difficulty in measuring PM2.5 concentrations under low-PM conditions.
KW - Cattle feedlots
KW - Flux-gradient technique
KW - Particulate matter emission fluxes
KW - PM
KW - Total suspended particulates
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U2 - 10.1016/j.atmosenv.2014.11.017
DO - 10.1016/j.atmosenv.2014.11.017
M3 - Article
AN - SCOPUS:84910001725
VL - 101
SP - 49
EP - 57
JO - Atmospheric Environment
JF - Atmospheric Environment
SN - 1352-2310
ER -