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.
|ジャーナル||IOP Conference Series: Earth and Environmental Science|
|出版ステータス||Published - 2018 3 12|
|イベント||2017 5th International Conference on Environment Pollution and Prevention, ICEPP 2017 - Singapore, Singapore|
継続期間: 2017 12 14 → 2017 12 16
ASJC Scopus subject areas
- Environmental Science(all)
- Earth and Planetary Sciences(all)