Diel VOC emissions from a beef cattle feedyard
Additional Document Info
Odor emission from waste lagoons at concentrated animal feeding operations has been a source of concern for some time. More than 11 million cattle are fed annually in Texas Panhandle feedyards, representing thirty percent of the nation's fed beef. The goal of this research was to determine if there is a diel effect in total VFA and sVOC emissions from a beef cattle feedlot. Sample collection was performed at a local beef cattle feedyard with a onetime feeding capacity of 24,000 head. A sampling station in the center of the feedyard was utilized for sample collection. WindTrax ver. 126.96.36.199 (Thunder Beach Scientific, 2007) was selected as the modeling software for emissions estimation. Raw data were evaluated and summed into two groups, total VFAs and total sVOCs. Acetic acid is the largest contributor of the VFAs we analyzed. Phenol was the largest contributor of the sVOCs. A diel effect was observed.