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Quality Assured Measurements of Animal Building Emissions: Part 2. Particulate Matter Concentrations Albert Heber; Teng Lim; John Gallien, Ji-Qin Ni; Pei-Chun Tao Purdue University, West Lafayette, IN Larry Jacobson University of Minnesota, St. Paul, MN Jacek Koziel Texas A&M University, Amarillo, TX Steven Hoff Iowa State University, Ames, IA Yuanhui Zhang University of Illinois, Urbana, IL Jerry Baughman North Carolina State University, Raleigh, NC
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Objectives Describe use of TEOM in livestock buildings to measure TSP, PM10 and PM2.5. Discuss QAQC Show some preliminary data collected this year
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Laying House PM
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Dust Measuring Strategies Determine temporal variation (Hinze et al., 1998) Semi-continuous mass monitor Representative exhaust fan (minimum winter) Calibrate with FRM Determine spatial variation (Wang et al., 1999) Multi-point gravimetric filter sampling Multiple exhausts plus ambient Calibrate with FRM
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TEOM flow schematic
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TEOM record in a pig house (Hinz et al., 1998)
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PM Monitoring Schematic
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Raceway Contains Vacuum Lines
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TEOM PM 10
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System Calibration Flow controller calibration (software) Mass flow controller calibration (hardware) Analog calibration Mass transducer verification Flow audit procedure Ambient temperature calibration Barometric pressure calibration
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TEOM Maintenance Filter replacement PM-10 inlet cleaning Replacing large bypass in-line filter Replacing flow controller filters Cleaning air inlet system Leak testing
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Changing TEOM Filter
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Loaded TEOM Filter
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Feathered Bug Screen
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Plugged Bug Screen
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PM10 Inlet Body
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Large Particles Collected
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Collocated TEOMS, FRM Fan inlet External screen PM 10 inlet Cabinet Wedding PM 10
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Collocated PM10 Measurements 24-h at laying house exhaust Anticipatory Feeding
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Four Collocated TEOMs in laying house exhaust (4/3/02)
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TSP vs. PM 10 in Laying House Exhaust Air (5/2/02)
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Collocated PM2.5, PM10, TSP at laying house
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Effect of Filter Loading Humidity Effect
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Lagoon Tunnel-ventilated finishing houses with flushing Oil sprinkled building
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Oil Sprinkling
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Oil pressure
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TSP Measurements in Two Swine Barns (11/08/02)
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Effect of Pig Activity on TSP
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Nine shrouded vanes installed at laying house Open vane (cheaper) 50% variations with static pressure!
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UIUC test of anemometer Calibration at UIUC BESS Lab
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Open impeller vane anemometer
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Open propeller
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Small Vane Anemometer Readings vs. Building Static Pressure
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Summary First measurements of TSP, PM10 and PM2.5 in livestock buildings in U.S. have been conducted. QAQC is critical to TEOM success. Moisture is adsorbed and desorbed Oil sprinkling reduces PM Real-time concentrations correlated to animal activity Anemometers provide real-time airflow data.
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Check out www.AgAirQuality.com Questions?
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