Distribution of particle and gas concentrations in Swine gestation confined animal feeding operations

Details

• Personal Author:
  Altmaier R ; Anderson, Kern E. ; Anthony, T. Renée ; O'Shaughnessy PT ; Peters TM ; Taylor C
• Description:
  OBJECTIVES: Dust mass concentrations, temperatures, and carbon dioxide concentrations were mapped in a modern, 1048-pen swine gestation barn in winter, spring, and summer. METHODS: In each season, two technicians measured respirable mass concentrations with an aerosol photometer and temperatures and carbon dioxide concentrations with an indoor air quality monitor at 60 positions in the barn. Stationary photometers were also deployed to measure mass concentrations during mapping at five fixed locations. RESULTS: In winter when building ventilation rates were low (center-barn mean air velocity=0.34 m s(-1), 68 fpm) to conserve heat within the barn, mass and carbon dioxide concentrations were highest (mass geometric mean, GM=0.50 mg m(-3); CO2 GM=2060 ppm) and fairly uniform over space (mass geometric standard deviation, GSD=1.48; CO2 GSD=1.24). Concentrations were lowest in summer (mass GM=0.13 mg m(-3); CO2 GM=610 ppm) when ventilation rates were high (center-barn mean air velocity=0.99 m s(-1), 196 fpm) to provide cooling. Spatial gradients were greatest in spring (mass GSD=2.11; CO2 GSD=1.50) with low concentrations observed near the building intake, increasing to higher concentrations at the building exhaust. CONCLUSIONS: Mass concentrations obtained in mapping were generally consistent with those obtained from stationary monitors. A moderately strong linear relationship (R2=0.60) was observed between the log of photometer-measured mass concentration and the log of carbon dioxide concentration, suggesting that carbon dioxide may be an inexpensive alternative to assessing air quality in a swine barn. These results indicate that ventilation can effectively reduce contaminant levels in addition to controlling temperature. [Description provided by NIOSH]
• Subjects:
  Agriculture Air Pollutants, Occupational Air Pollution Animals Dust Environmental Exposure Environmental Pollution Livestock Occupational Health Particulate Matter Respiratory System Safety Ventilation

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• Keywords:
  Agricultural Exposures Airborne Particles Air Contamination Air Quality Author Keywords: Aerosol Mapping Dust Particles Dusts Environmental Pollution Livestock Industry Monitors Particulate Matter Respiratory Irritants Swine Barn

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• ISSN:
  0003-4878
• Document Type:
  Text
• Funding:
  Cooperative Agreement ; Grant
• Genre:
  Journal Article
• Place as Subject:
  Iowa ; New Jersey ; OSHA Region 2 ; OSHA Region 7
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  56
• Issue:
  9
• NIOSHTIC Number:
  nn:20043545
• Citation:
  Ann Occup Hyg 2012 Nov; 56(9):1080-1090
• Contact Point Address:
  Thomas M. Peters, The University of Iowa, Occupational and Environmental Health, Iowa City, IA, USA
• Email:
  thomas-m-peters@uiowa.edu
• Federal Fiscal Year:
  2013
• NORA Priority Area:
  Agriculture, Forestry and Fishing
• Performing Organization:
  University of Iowa, Iowa City
• Peer Reviewed:
  True
• Start Date:
  20010930
• Source Full Name:
  Annals of Occupational Hygiene
• End Date:
  20270929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:cc1152c98eaa1218714dd2339796c4095c029b176c1344024a63e8dc6bb9d0c9714d8f4e9519aedd2e603a90274fe5c2b99af49b9b457f0be939edf5151f8409
• Download URL:
  https://stacks.cdc.gov/view/cdc/195423/cdc_195423_DS1.pdf
• File Type:
  [PDF - 1.09 MB ]