A Clarification of the Inactivation Mechanisms of Highly Effective Disinfection Treatment using Ultrasonically-Generated Ozone Microbubbles

Abstract

A water disinfection treatment approach using ozone microbubbles generated by a hollow ultrasonic horn was developed. This treatment involves efficient disinfection of Escherichia coli. Disinfection of water with and without impurities were dominated by non-selective oxidation by radicals and oxidation by ozone, respectively. This treatment using ozone microbubbles generated by a hollow ultrasonic horn led to efficient disinfection, owing to the high solubility of the microbubbles and synergism of the ozone and ultrasonic irradiation.