Department of Biological and Agricultural Engineering, Kansas State University, Manhattan, KS, USA.
J Air Waste Manag Assoc. 2012 Mar;62(3):350-61. doi: 10.1080/10473289.2011.651557.
Open beef cattle feedlots emit various air pollutants, including particulate matter (PM) with equivalent aerodynamic diameter of 10 microm or less (PM10); however limited research has quantified PM10 emission rates from feedlots. This research was conducted to determine emission rates of PM10 from large cattle feedlots in Kansas. Concentrations of PM10 at the downwind and upwind edges of two large cattle feedlots (KS1 and KS2) in Kansas were measured with tapered element oscillating microbalance (TEOM) PM10 monitors from January 2007 to December 2008. Weather conditions at the feedlots were also monitored. From measured PM10 concentrations and weather conditions, PM10 emission rates were determined using reverse modeling with the American Meteorological Society/U.S. Environmental Protection Agency Regulatory Model (AERMOD). The two feedlots differed significantly in median PM10 emission flux (1.60 g/m2-day for KS1 vs. 1.10 g/m2-day for KS2) but not in PM10 emission factor (27 kg/1000 head-day for KS1 and 30 kg/1000 head-day KS2). These emission factors were smaller than published U.S. Environmental Protection Agency (EPA) emission factor for cattle feedlots.
开放式肉牛饲养场会排放各种空气污染物，包括等效空气动力学直径为 10 微米或以下的颗粒物（PM10）；然而，有限的研究已经量化了饲养场的 PM10 排放率。这项研究旨在确定堪萨斯州大型肉牛饲养场的 PM10 排放率。从 2007 年 1 月到 2008 年 12 月，使用锥形元件振荡微天平（TEOM）PM10 监测仪在堪萨斯州的两个大型肉牛饲养场（KS1 和 KS2）的下风侧和上风侧边缘测量 PM10 的浓度。饲养场的天气条件也进行了监测。根据测量的 PM10 浓度和天气条件，使用美国气象学会/美国环境保护署法规模型（AERMOD）的反向建模确定了 PM10 排放率。这两个饲养场的 PM10 排放通量中位数差异显著（KS1 为 1.60 g/m2-天，KS2 为 1.10 g/m2-天），但 PM10 排放因子（KS1 为 27 kg/1000 头-天，KS2 为 30 kg/1000 头-天）没有差异。这些排放因子小于美国环境保护署（EPA）公布的肉牛饲养场的排放因子。
