ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

A naked-eyes detection method and the influence of solid particles for the ultrasonic cavitation

Jian Liu, Shixing Wang, Chenhui Liu, Libo Zhang, and Wentong Sun

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, People’s Republic of China

E-mail: wsxkm@sina.com

Received: 26 March 2021  Accepted: 26 July 2021

Abstract:

In the present research, we propose a novel measuring method of ultrasonic cavitation by naked-eye based on the conversion of ferrous ion to ferric ion and chromogenic reaction between ferric and thiocyanate. The effects of different conditions affecting cavitation were investigated. Experiments show that this method can effectively measure the strength of the cavitation field of the system, and is simple to operate, and the results are intuitive, and the cavitation strength can be obtained quickly. The effects of size and concentration of solid particles on ultrasonic cavitation are also studied by using micro-SiO₂ as the typical representativeness. It was found that the addition of solid particles could reduce the heterogeneous cavitation threshold. The results provide a basis for the industrialization of ultrasonic chemistry, especially the strengthening of the reaction process of heterogeneous systems under ultrasound.

Keywords: Naked-eyes detection; Cavitation; Ultrasound; Sonochemical efficiency; Solid particles

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-021-01805-6

Chemical Papers 75 (12) 6389–6397 (2021)