ABSTRACT
This chapter is based on the relationship between two familiar and naturally occurring phenomena, that of sound and that of light, but that in some cases can be very closely related as shown by the extreme forms and effects produced by cavitation. Under the right circumstances, such an effect can achieve a high level of efciency that is indeed capable of producing sonoluminescence, or the emission of photons by sound stimulation. A closely related eld to sonoluminescence, by extension, is sonophotocatalysis or the capability to reproduce the photocatalytic effect upon a suitably treated surface, from the emission of photons from sonoluminescence and thus enabling a new eld of study
CONTENTS
6.1 Introduction ........................................................................................................................ 107 6.2 Water Physical-Chemical Properties .............................................................................. 109 6.3 Cavitation ............................................................................................................................ 114 6.4 Advanced Oxidation Process (AOP) ............................................................................... 116 6.5 Sonophotocatalysis ............................................................................................................ 117 6.6 Sonoluminescence ............................................................................................................. 117 6.7 Applications with Vortex Cavitation ............................................................................... 119
6.7.1 Water Remediation ................................................................................................ 120 6.7.2 Fuel Emulsication and Mixing .......................................................................... 120 6.7.3 Cooling Water Treatment ...................................................................................... 120 6.7.4 Wastewater/Digester ............................................................................................. 120 6.7.5 Emerging Contaminants....................................................................................... 121 6.7.6 Biodiesel .................................................................................................................. 121 6.7.7 Ballast Water Treatment ........................................................................................ 121 6.7.8 Enhanced Organic Reactions ............................................................................... 121 6.7.9 Ice Fabrication ......................................................................................................... 122
6.8 SonoPhotoCatalytic Cavitation or SPCC ........................................................................ 122 Acknowledgments ...................................................................................................................... 123 References ..................................................................................................................................... 123
we propose to call SonoPhotoCatalytic Cavitation (SPCC). SPCC describes the combined effects of ultrasound with heterogeneous photocatalysis taking place within a cavitation, producing a resonant vortex chamber tuned to produce sonoluminescence. We draw on the parallels on how these existing technologies may be combined and applied to water remediation or potable water treatment by the advent of new materials brought about in the rapidly growing eld of applied nanotechnology to produce highly efcient photocatalyst coatings combined with drag-reducing nanocoatings into both the realms of sound and light.
