79112 20191122145052.0 doi 10.1016/j.ultsonch.2018.05.015 sideral 106373 ART-2018-106373 eng (orcid)0000-0003-4798-4660 Cerecedo, L.M. Universidad de Zaragoza Water disinfection by hydrodynamic cavitation in a rotor-stator device 2018 Access copy available to the general public Unrestricted The efficiency of a rotor-stator device for water disinfection based on hydrodynamic cavitation is investigated. Water is infected with E. coli and E. faecalis with initial concentrations in the range 5 × 102–1.2 × 106 CFU/ml. Various geometries of the cavitation channel between rotor and stator are tested, achieving bacterial annihilation in less than 10 min of treatment times. Microorganism permanent elimination is verified via micro-seeding to discard viable non-culturable bacteria; micro-seeding was done for those samples displaying no CFU growth via normalized cultures on a Petri dish. TEM photographs are analyzed and the extent of bacterial damages is tentatively correlated with the various cavitation mechanisms. Rotor-stator cavitation assemblies used in the current research are between one and two orders of magnitude more energy efficient than those tested by other investigators. Acoustic pressure spectra are measured to assess the implosion intensity. Parametric analyses are conducted changing the rotor diameter (110–155 mm), the cavitation channel contraction ratio, Amax/Amin(4.56–5.0), and the number of contractions (Nr:58–80 rotor vanes; Ns:8–16 stator vanes). info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 7.279 2018 CHEMISTRY, MULTIDISCIPLINARY 25 / 172 = 0.145 2018 Q1 T1 ACOUSTICS 1 / 31 = 0.032 2018 Q1 T1 1.556 2018 Acoustics and Ultrasonics 2018 Q1 Radiology, Nuclear Medicine and Imaging 2018 Q1 Chemical Engineering (miscellaneous) 2018 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0002-2267-8598 Dopazo, C. Universidad de Zaragoza (orcid)0000-0002-1827-7556 Gomez-Lus, R. 5001 600 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Mecánica de Fluidos 48 (2018), 71-78 Ultrason. sonochem. Ultrasonics Sonochemistry 1350-4177 1106280 http://zaguan.unizar.es/record/79112/files/texto_completo.pdf Postprint 37418 http://zaguan.unizar.es/record/79112/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:79112 articulos driver 2019-11-22-14:43:49 ARTICLE