Back to Search
Start Over
A high-power ultrasonic microreactor and its application in gas–liquid mass transfer intensification.
- Source :
-
Lab on a Chip . 2015, Vol. 15 Issue 4, p1145-1152. 8p. - Publication Year :
- 2015
-
Abstract
- The combination of ultrasound and microreactor is an emerging and promising area, but the report of designing high-power ultrasonic microreactor (USMR) is still limited. This work presents a robust, high-power and highly efficient USMR by directly coupling a microreactor plate with a Langevin-type transducer. The USMR is designed as a longitudinal half wavelength resonator, for which the antinode plane of the highest sound intensity is located at the microreactor. According to one dimension design theory, numerical simulation and impedance analysis, a USMR with a maximum power of 100 W and a resonance frequency of 20 kHz was built. The strong and uniform sound field in the USMR was then applied to intensify gas–liquid mass transfer of slug flow in a microfluidic channel. Non-inertial cavitation with multiple surface wave oscillation was excited on the slug bubbles, enhancing the overall mass transfer coefficient by 3.3–5.7 times. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14730197
- Volume :
- 15
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Lab on a Chip
- Publication Type :
- Academic Journal
- Accession number :
- 100868181
- Full Text :
- https://doi.org/10.1039/c4lc01431f