Journal
BIORESOURCE TECHNOLOGY
Volume 101, Issue 19, Pages 7252-7257Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.04.035
Keywords
Biogas; Microbial aerosols; Aerosolization; Microbial diversity; Quantitative real-time PCR
Funding
- French Agency for Environment and Energy Management (ADEME)
- GDF SUEZ (Gaz de France)
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Aerosolization of Bacteria, Archaea, Synergistes, Staphylococcus spp. and Propionibacterium acnes was investigated in situ with quantitative real-time PCR of DNA isolated from sludge and biogases of anaerobic digesters. The data revealed that in biogas, Staphylococcus spp. and P. acnes were, respectively, aerosolized 30 and 220 times more and Archaea and Synergistes, respectively, 8 and 20 times less aerosolized than Bacteria. This is the first demonstration of selective microbial aerosolization for anaerobic digestors microorganisms. This study illustrates the fact that some microbial groups, such as opportunistic pathogens, are more susceptible to be aerosolized, since they use air as a dissemination vector, and that this has to be taken in account when up-grading biogas into natural gas networks. (C) 2010 Published by Elsevier Ltd.
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