Journal of Soil and Groundwater Environment (한국지하수토양환경학회지:지하수토양환경)

Korean Society of Soil and Groundwater Environment (한국지하수토양환경학회)
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The Effect of Distance between Two Transducers on Sonochemical Reactions in Dual Irradiation Systems

이중 초음파 조사 시스템에서 진동부 사이의 거리가 초음파 화학 반응에 미치는 영향

  • Kim, Eunkyung (Department of Environmental Engineering, Kumoh National Institute of Technology) ;
  • Son, Younggyu (Department of Environmental Engineering, Kumoh National Institute of Technology)
  • 김은경 (국립금오공과대학교 환경공학과) ;
  • 손영규 (국립금오공과대학교 환경공학과)
  • Received : 2013.09.03
  • Accepted : 2013.10.17
  • Published : 2013.10.31
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Abstract

Many researchers have studied the effectiveness of ultrasound in chemical and environmental engineering fields including material synthesis, pollutant removal, cleaning, extraction, and disinfection. Acoustic cavitation induced by ultrasound irradiation in aqueous phase can cause various sonophysical and sonochemical reactions without any chemicals. However most of the previous studies focused only on the relationships between ultrasonic conditions and the results of sonochemical reactions in lab-scale sonoreactors. As a results of this, only a few studies have been devoted to design and optimization of industrial scale sonoreactors. In this study, the effect of the distance between two opposite transducer modules on sonochemical reactions was investigated in single and dual irradiation systems (334 kHz) for four distances including 50, 100, 150, and 200 mm using KI dosimetry. It was found that the dual irradiation systems provided higher performance in terms of the zeroth reaction coefficient and the cavitation yield compared to the single irradiation systems. The sonochemiluminescence (SCL) images for the visualization of the cavitation field showed that cavitation active zone was larger and sonochemical reaction intensity was much higher in the dual irradiation system than in the single irradiation system.

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References

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