Thermal Inactivation of Viable Geobacillus Stearothermophilus and Bacillus Atrophaeus Spores in a Bench-Scale Landfill Gas Flare
Public Deposited- Last Modified
- March 22, 2019
- Creator
-
Tufts, Jenia A.
- Affiliation: Gillings School of Global Public Health, Department of Environmental Sciences and Engineering
- Abstract
- A bench-scale, landfill flare system was designed and built to test the potential for heat-resistant spores to survive the flaring process and enter the environment. The residence times and temperatures of the flare were characterized and compared to full-scale systems. Experiments were conducted using Geobacillus stearothermophilus and Bacillus atrophaeus spores as surrogates for Bacillus anthracis. Spore solutions were aerosolized, dried, and sent through the bench-scale system. Sampling was conducted downstream of the flare using a bioaerosol collection device. The samples were cultured, incubated for seven days, and assessed for viability. Results showed that the bench-scale, landfill flare system was comparable to a full-scale combustor flare with a single-orifice diffusion burner. All spores of G. stearothermophilus and B. atrophaeus were inactivated in the bench-scale system, suggesting that spores that pass through the flare in a full-scale system will become inactivat
- Date of publication
- May 2011
- DOI
- Resource type
- Rights statement
- In Copyright
- Note
- Includes 13 supplemental Excel files.
- Advisor
- Leith, David
- Degree
- Master of Science
- Graduation year
- 2011
- Language
- Publisher
Relations
- Parents:
This work has no parents.