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Farhat M Trouilhé MC Forêt C Hater W Moletta-Denat M Robine E Frère J 《Water science and technology》2011,64(3):708-714
Legionella bacteria encounter optimum growing conditions in hot water systems and cooling towers. A pilot-scale 1 unit was built in order to study the biofilm disinfection. It consisted of two identical loops, one used as a control and the other as a 'Test Loop'. A combination of a bio-detergent and a biocide (hydrogen peroxide + peracetic acid) was applied in the Test Loop three times under the same conditions at 100 and 1,000 mg/L with a contact time of 24 and 3-6 hours, respectively. Each treatment test was preceded by a three week period of biofilm re-colonization. Initial concentrations of culturable Legionella into biofilm were close to 10(3) CFU/cm2. Results showed that culturable Legionella spp. in biofilm were no longer detectable three days following each treatment. evertheless, initial Legionella spp. concentrations were recovered 7 days after the treatments (in two cases). Before the tests, Legionella spp. and L. pneumophila PCR counts were both about 10(4) GU/cm2 in biofilm and they both decreased by 1 to 2 log units 72 hours after each treatment. The three tests had a good but transient efficiency on Legionella disinfection in biofilm. 相似文献
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Loïc Mervant Marie Tremblay-Franco Maïwenn Olier Emilien Jamin Jean-Francois Martin Lidwine Trouilh Charline Buisson Nathalie Naud Claire Maslo Cécile Héliès-Toussaint Edwin Fouché Emmanuelle Kesse-Guyot Serge Hercberg Pilar Galan Mélanie Deschasaux-Tanguy Mathilde Touvier Fabrice Pierre Laurent Debrauwer Francoise Guéraud 《Molecular nutrition & food research》2023,67(5):2200432
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