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Evaluation and Modeling of PM10 Emissions from Laying Hen Operations

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

Citation:  2012 Dallas, Texas, July 29 - August 1, 2012  121337468.(doi:10.13031/2013.42415)
Authors:   Jnana Bairy, Calvin B Parnell, Jr., Russell O McGee, Lingjuan Wang-Li
Keywords:   Emission factors, AERMOD, TEOM, FRM, laying hen operations, air pollution, PM10

The emission rates of particulate matter emitted from cattle feedyards, dairies, cotton gins, and grain elevators are regulated by the SAPRAs. The goal of this research was to develop emission factors and emission rates for PM10 emitted at laying hen operations, and to determine the property line distances for the facility to maintain compliance with the NAAQS. PM10 concentrations inside a laying hen operation were measured by Wang et al. in North Carolina, using TEOM and filter-based low-volume PM10 samplers. Thirty-minute measurements were collected by TEOM samplers and 24-hour measurements were collected using gravimetric samplers. Flow rates required for ventilation at the facility were considered for four different scenarios in order to obtain the emission rates and emission factors of PM10. The PM10 and PM2.5 emission factors were higher and the TSP emission factors were lower in laying hen operations than broiler operations. Emission factors were used in AERMOD to obtain 24-hour average PM10 concentrations emitted from the facility. Consequently, the property line distances at which the emissions of PM10 were below the 24-hour average PM10 standards, were estimated. The results indicated that the laying hen facility required substantially large property line distances, when the fans provided for ventilation purposes were assumed to be running at all times. Property line distances were smaller, on accounting for the over-sampling of PM10 pre-collectors and the minimum flow rate recommendations by the Midwest Plan Service.

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