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- Title
Can rapid pressure decrease induced by supercavitation efficiently eradicate Legionella pneumophila bacteria?
- Authors
Šarc, Andrej; Oder, Martina; Dular, Matevž
- Abstract
The presence ofLegionella pneumophilabacteria in engineered water systems can pose a significant health risk. Current prevention and outbreak treatments are cost and environmentally ineffective. Moreover they do not prevent rapid bacteria recolonization. Although cavitation was already suggested as a possible water treatment technique a systematic study has not yet been performed. In the present experimental campaign we set out to evaluate the efficiency of removal ofL. pneumophilaby three types of cavitation—the most commonly used acoustic cavitation, the aggressive developed hydrodynamic cavitation, and the supercavitation. We show that it is probably not the pressure peaks or the high local temperatures that cause the eradication of the bacteria, but the rapid pressure decrease which was initiated in supercavitating flow regime. Results of the study show promising ground for further optimization of a methodology forL. pneumophilaremoval by cavitation.
- Subjects
LEGIONELLA pneumophila; CAVITATION; BACTERIAL colonies; WATER purification; WATER pressure
- Publication
Desalination & Water Treatment, 2016, Vol 57, Issue 5, p2184
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1080/19443994.2014.979240