Generation of OH Radical by Ultrasonic Irradiation in Batch and Circulatory Reactor

Yu Fang, Sayaka Shimizu, Takuya Yamamoto, Sergey Komarov

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

Ultrasonic technology has been widely investigated in the past as one of the advance oxidation processes to treat wastewater, in this process acoustic cavitation causes generation of OH radical, which play a vital role in improving the treatment efficiency. In this study, OH radical formation rate was measured in batch and circulatory reactor by using Weissler reaction at various ultrasound output power. It is found that the generation rate in batch reactor is higher than that in circulatory reactor at the same output power. The generation rate tended to be slower when output power exceeds 137W. The optimum condition for circulatory reactor was found to be 137W output and 4L/min flow rate. Results of aluminum foil erosion test revealed a strong dependence of cavitation zone length on the ultrasound output power. This is assumed to be one of the reasons why the generation rate of HO radicals becomes slower at higher output power in circulatory reactor.

Original languageEnglish
Article number012019
JournalIOP Conference Series: Earth and Environmental Science
Volume120
Issue number1
DOIs
Publication statusPublished - 2018 Mar 12
Event2017 5th International Conference on Environment Pollution and Prevention, ICEPP 2017 - Singapore, Singapore
Duration: 2017 Dec 142017 Dec 16

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

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