Advanced oxidation processes using ultrasound technology for water and wastewater treatment #22

Abstract

For decades, ultrasound technology using acoustic cavitation has been an issue and widely studied for many environmental/chemical engineering processes as one of emerging green technologies. Concentrated energy in tiny-scale cavitation bubbles releases when the bubbles collapse and various chemical and physical effects can be induced without the application of chemicals. In this chapter, previous researches regarding the optimization of sonochemical degradation/oxidation reactions for water and wastewater treatment processes are carefully reviewed. The basic principles of advanced oxidation processes and acoustic cavitation are introduced, and the effects of affecting factors on sonochemical oxidation/degradation reactions including input power, applied frequency, dissolved species, and target compounds’ volatility are discussed in terms of engineering applications.