Biofilm formation comparison with the SANIPACKING® cooling tower complete material against standard polypropylene fill material inside a recirculating model water system
Cooling towers are heat rejection techniques that are used in several industrial applications, with the potential to develop transmittable concentrations of Legionella pneumophila. SANIPACKING® a / c tower fill substance and standard polypropylene load material were when compared in terms of biofilm formation probable and anti-Legionella activity within a 4-month period using a laboratory-scale recirculating normal water system. The recirculating water system was experimentally contaminated with a L. pneumophila common strain (ATCC 33152) suspension and also operated continuously till all experiments have been completed. Results showed that the L. pneumophila rapidly multiplied in a short time during the study within the design system bulk normal wastewater water accessory. No L. pneumophila had been isolated from the SANIPACKING® floor during the 4-month period, whilst intensive colonization occurred about the standard polypropylene material surface in the first thirty day period. %filespin-auto_anchor-article.dat% Heterotrophic bacterial counts about the surfaces showed that an extremely low accumulation ended up being recorded on the SANIPACKING® surface area in comparison to the standard polypropylene substance. Total bacterial number on surfaces, dependant on epifluorescence microscopy (using DAPI), revealed that substantially low counts regarding microorganisms colonized on the SANIPACKING® area.