Principles And Applications of Intensification of Chemical Reactions Using Ultrasonic Tubular Reactors

Abstract

Ultrasonic microreactors are becoming more popular for tasks like particle synthesis, crystallization, and organic synthesis involving solids, mainly because ultrasound helps prevent clogging. However, the scaling problems of ultrasonic flow reactors limit the wider application of this technology. The demand for efficient wastewater treatment is become more pressing as industrial activity increases. The volume of liquid waste is increasing while water purification standards are becoming more stringent. Numerous physical and chemical techniques, such as electrocoagulation, sorption, biological approaches, ultraviolet exposure, oxidation, coagulation, and flocculation, have been developed to treat wastewater in response to market demands. The advantages and disadvantages of each of these approaches dictate the situations in which they can be used successfully. Studies have indicated that the physical and chemical processes involved in these methods can be improved by ultrasonic treatment. For example, ultrasonic stimulation can shorten reaction times or increase purification levels by ultrasonic oscillations, while also drastically reducing the number of reagents required, such as coagulants and flocculants. However, the challenge lies in the need to treat large volumes of water that contain only small amounts of impurities, which complicates the use of powerful ultrasound for enhancing wastewater treatment on an industrial scale.