Assessment of an Aerosol Treatment to Improve Air Quality in a Swine Concentrated Animal Feeding Operation (CAFO)

Details

• Personal Author:
  Buckley TJ ; Chapin AR ; Gibson KE ; McCarthy SA ; Rule AM ; Schwab KJ
• Description:
  Poor air quality within swine concentrated animal feeding operations (CAFOs) poses a threat to workers, the surrounding community, and farm production. Accordingly, the current study was conducted to evaluate a technology for reducing air pollution including particulate matter (PM), viable bacteria, and ammonia within such a facility. The technology consists of an acid-oil-alcohol aerosol applied daily. Its effectiveness was evaluated by comparing air quality from before to after treatment and between treated and untreated sides of a barn separated by an impervious partition. On the untreated side, air quality was typical for a swine CAFO, with mean PM2.5 of 0.28 mg/m3 and PM(TOT) of 1.5 mg/m3. The treatment yielded a reduction in PM concentration of 75-90% from before to after treatment. Effectiveness increased with time, application, and particle size (40% reduction for 1 microm and 90% for >10 microm). Airborne bacteria levels (total bacteria, Enterobacteriaceae, and gram-positive cocci) decreased one logarithmic unit after treatment. In contrast, treatment had no effect on ammonia concentrations. These findings demonstrate the effectiveness of an intervention in yielding exposure and emission reductions. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollution Animals Environmental Monitoring Occupational Health Particulate Matter Safety
• Keywords:
  Air Quality Air Quality Measurement Air Sampling Air Sampling Equipment Air Sampling Techniques Air Treatment Air Treatment Equipment Bacteria Particulates
• ISSN:
  0013-936X
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Maryland ; OSHA Region 3
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  39
• Issue:
  24
• NIOSHTIC Number:
  nn:20037380
• Citation:
  Environ Sci Technol 2005 Dec; 39(24):9649-9655
• Contact Point Address:
  Timothy J. Buckley, Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe St. (Room E6614), Baltimore,MD21205
• Email:
  tbuckley@jhsph.edu
• Federal Fiscal Year:
  2006
• Performing Organization:
  Johns Hopkins University
• Peer Reviewed:
  True
• Start Date:
  19940701
• Source Full Name:
  Environmental Science and Technology
• End Date:
  20050630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:46f2684cf09a7d3483b9e7ebf7814acb1ce15ad9de81065612d66a3662f1472f6684bc201fca6d21e4e5b265f9fab095c7a326ad574fa6022d9db11e663b860b
• Download URL:
  https://stacks.cdc.gov/view/cdc/188479/cdc_188479_DS1.pdf
• File Type:
  [PDF - 181.56 KB ]