Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Assessment of an aerosol treatment to improve air quality in a swine concentrated animal feeding operation (CAFO).

Authors
Rule-AM; Chapin-AR; McCarthy-SA; Gibson-KE; Schwab-KJ; Buckley-TJ
Source
Environ Sci Technol 2005 Dec; 39(24):9649-9655
NIOSHTIC No.
20037380
Abstract
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.
Keywords
Air-quality; Air-quality-measurement; Air-sampling; Air-sampling-equipment; Air-sampling-techniques; Air-treatment; Air-treatment-equipment; Aerosols; Animals; Bacteria; Particulates
Contact
Timothy J. Buckley, Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, 615 N. Wolfe St. (Room E6614), Baltimore,MD21205
CODEN
ESTHAG
Publication Date
20051201
Document Type
Journal Article
Email Address
tbuckley@jhsph.edu
Funding Type
Grant
Fiscal Year
2006
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T42-CCT-310419; Grant-Number-T42-OH-008428
Issue of Publication
24
ISSN
0013-936X
Source Name
Environmental Science and Technology
State
MD
Performing Organization
Johns Hopkins University
TOP