• Sonochemical and Sonophysical Effects in a Downward-Irradiation Sonoreactor
  • Seulgi Kim1,2·Younggyu Son1,2,*

  • 1 Department of Environmental Engineering, Kumoh National Institute of Technology
    2 Department of Energy Engineering Convergence, Kumoh National Institute of Technology

  • 하향 초음파 조사 시스템에서의 초음파 화학적 및 물리적 효과 평가 
  • 김슬기1,2 ·손영규1,2, *

  • 1 금오공과대학교 환경공학과
    2 금오공과대학교 에너지공학융합전공


The performance of a downward-irradiation sonoreactor was investigated using calorimetry, KI dosimetry, luminol (Sonochemiluminescence, SCL) method, and aluminium foil erosion method as one of the basic steps for the optimal design of downward-irradiation sonoreactors. The applied frequency was 28 kHz and the input electrical power was 280 - 300 W. The liquid height, from the reactor bottom to the transducer module surface, ranged from 1λ (53.6 mm) to 2λ (107.1 mm). For various liquid heights, the magnitude of calorimetric power and the mass of cavitation-generated I3- ion varied significantly. It was found that the additional application of mechanical mixing resulted in higher sonochemical activity, especially in the cavitational active zone, which was induced by violent liquid flow in the reactor. In aluminium foil erosion tests, it was found that less ultrasound energy reached the bottom of the reactor due to the violent liquid flow and no significant sonophysical effect was observed for higher mixing rate conditions (100 and 200 rpm). 

Keywords: Cavitation, Sonoreactors, Calorimetry, KI dosimetry, Sonochemiluminescence (SCL)

This Article

  • 2020; 25(3): 23-31

    Published on Sep 30, 2020

  • 10.7857/JSGE.2020.25.3.023
  • Received on Aug 28, 2020
  • Revised on Sep 4, 2020
  • Accepted on Sep 14, 2020

Correspondence to

  • Younggyu Son
  • 1 Department of Environmental Engineering, Kumoh National Institute of Technology

  • E-mail: yson@kumoh.ac.kr