ArticleUltrasonics sonochemistry2023
Effect of violent mixing on sonochemical oxidation activity under various geometric conditions in 28-kHz sonoreactor.
Article in Ultrasonics sonochemistry, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Ultrasonic Activation of Persulfate for the Removal of BPA in 20, 28, and 300 kHz Systems.Ultrasonics sonochemistry · 2025Article
- Machine learning model to predict rate constants for sonochemical degradation of organic pollutants.Ultrasonics sonochemistry · 2024Article
- Ultrasonic reactor set-ups and applications: A review.Ultrasonics sonochemistry · 2024Article
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3 authors.
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Abstract
The effects of violent mixing and reactor geometric conditions were investigated using the overhead stirrer and high-speed homogenizer in 28-kHz sonoreactors. The sonochemical oxidation activity was quantified using the KI dosimetry method, and the sonochemical active zone was visually observed using the luminol method. Higher mixing rates resulted in a significant enhancement of the sonochemical oxidation activity, primarily due to a significant change in the sonochemical active zone. When using the overhead stirrer (0-2,000 rpm), the highest activity for 2λ and 3λ occurred at 500 rpm, whereas the highest activity for 4λ was obtained at 250 rpm. For the high-speed homogenizer (0-12,000 rpm), the highest activity was consistently obtained at 3,500 rpm across all liquid height conditions. The impact of mixing position (Top, Mid, and Bot positions) on sonochemical activity was analyzed. The results revealed that the lowest activity was obtained for the bottom position, likely attributed to significant ultrasound attenuation. The reactor size effect was investigated using the high-speed homogenizer in five cylindrical sonoreactors with different diameters (12-27 cm). It was found that very low activity could be observed due to unexpected geometric conditions, and the application of mixing (3,500 rpm in this study) could result in high sonochemical activity regardless of geometric conditions.
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