title: Ultrasonic inactivation of Microcystis aeruginosa in the presence of TiO₂ particles.
abstract: This is the first study to demonstrate that Microcystis aeruginosa, a typical algal bloom-forming cyanobacterium, can be effectively inactivated by ultrasound (US) irradiation in the presence of titanium dioxide (TiO₂) particles as a sonocatalyst. When a culture broth of M. aeruginosa was ultrasonically irradiated for 15 min in the presence of 0.5 g/mL of TiO₂ particles 2 mm in diameter, the cell survival ratio was 0.13, which was significantly lower than that in the case of US irradiation alone (0.87). Moreover, regrowth of M. aeruginosa in the culture was also inhibited for 10 days following ultrasonic disinfection in the presence of TiO₂ particles for 15 min.
authors.affiliation: Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan.
authors.forename: Kazuaki
authors.initials: K
authors.lastname: Ninomiya
authors.forename: Chiaki
authors.initials: C
authors.lastname: Ogino
authors.forename: Shinya
authors.initials: S
authors.lastname: Kawabata
authors.forename: Kentaro
authors.initials: K
authors.lastname: Kitamura
authors.forename: Teruya
authors.initials: T
authors.lastname: Maki
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Hasegawa
authors.forename: Nobuaki
authors.initials: N
authors.lastname: Shimizu
mesh_terms: D004203:Disinfection; D050296:Microbial Viability; D046931:Microcystis / Q000166:cytology / Q000254:growth & development / Q000528:radiation effects*; D014025:Titanium; D014465:Ultrasonics
chemical_list: C009495:titanium dioxide; D014025:Titanium