title: Effect of reaction vessel diameter on sonochemical efficiency and cavitation dynamics.
abstract: The influence of reaction vessel diameter on the sonochemical yield was investigated by using reaction vessels with five different diameters. It was revealed that the formation of H(2)O(2) and chloride ion, from the sonolysis of pure water and 1,2,4-trichlorobenzene aqueous solution, was affected by the reaction vessel diameter. That is, these yields increased as the reaction vessel diameter increased up to ø 90 mm and then decreased over ø 90 mm. From the analyses of the measurement of sonochemiluminescence and the calorimetry, it was suggested that active cavitation bubbles were formed at certain zones. In the case of a larger diameter reaction vessel, it was suggested that bubble nuclei that have not grown up to the resonance size, escaped from the sonication zone to the non-sonication zone and dissolved away. As a result, the number of active cavitation bubbles and the yields of H(2)O(2) and chloride ion would decrease in the case of a larger diameter reaction vessel.
authors.affiliation: Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
authors.forename: Ben
authors.initials: B
authors.lastname: Nanzai
authors.forename: Kenji
authors.initials: K
authors.lastname: Okitsu
authors.forename: Norimichi
authors.initials: N
authors.lastname: Takenaka
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Bandow
authors.forename: Naoki
authors.initials: N
authors.lastname: Tajima
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Maeda