The inactivation of microorganisms in water using ultrasonic has been extensively studied. One of the factors responsible for inactivation is the destruction of microorganisms by ultrasonic waves. We have reported that the main factor for the destruction phenomenon is the mechanical resonance of the microorganisms themselves.
In this study, microcapsules having equal size and wide particle size similar to that of algae were substituted as samples, and experiments were conducted with constant physical properties other than particle size. We irradiated the microcapsules with ultrasonic waves of different frequencies, and examined the effect of particle diameter and ultrasonic frequency on the destruction phenomenon.
