Investigation of sonochemical activities at a frequency of 334 kHz: the effect of geometric parameters of sonoreactor

Kim E 1 , Cui M 1 , Jang M 2 , Park B 1 , Son Y 3 , Khim J 4

Affiliations 

  • 1 School of Civil Environmental and Architecture Engineering, Korea University, Seoul 136-701, Republic of Korea
  • 2 Department of Civil Engineering, Faculty of Engineering, University of Malaya, Kulala Lumpur 50603, Malaysia
  • 3 Department of Environmental Engineering, Kumoh National Institute of Technology, Gyungbuk 730-701, Republic of Korea
  • 4 School of Civil Environmental and Architecture Engineering, Korea University, Seoul 136-701, Republic of Korea. Electronic address: [email protected]
Ultrason Sonochem, 2014 Jul;21(4):1504-11.
PMID: 24508490 DOI: 10.1016/j.ultsonch.2014.01.003

Abstract

In this study, the effect of the dimensions of the bottom plate and liquid height was investigated for high-frequency sonoreactors under a vertically irradiated system. The dimensions of the bottom plate did not significantly influence sonochemical activity considering power density. However, as the bottom plate was increased in size, the hydroxyl radical generation rate decreased because of a decrease in power density. It is therefore recommended that sonoreactors with bottom-plate dimensions close to those of the ultrasonic transducer module be used. Liquid height had a significant effect on sonochemical activity, but the trend of the activity considering power density changed as the initial pollutant concentration changed. In the case of low initial concentration of As(III) (1 mg/L), the maximum cavitation yield for As(III) oxidation was observed at liquid heights of 150 mm.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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