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Updated: Apr 6, 2026
Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
Published on: May 9, 2021
Exploring bubble oscillation and mass transfer enhancement in acoustic-assisted liquid-liquid extraction with a
Yuliang Xie1, Chandraprakash Chindam2, Nitesh Nama2
11] Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA [2] Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802, USA.
Abstract:
We investigated bubble oscillation and its induced enhancement of mass transfer in a liquid-liquid extraction process with an acoustically-driven, bubble-based microfluidic device. The oscillation of individually trapped bubbles, of known sizes, in microchannels was studied at both a fixed frequency, and over a range of frequencies. Resonant frequencies were analytically identified and were found to be in agreement with the experimental observations. The acoustic streaming induced by the bubble oscillation was identified as the cause of this enhanced extraction. Experiments extracting Rhodanmine B from an aqueous phase (DI water) to an organic phase (1-octanol) were performed to determine the relationship between extraction efficiency and applied acoustic power. The enhanced efficiency in mass transport via these acoustic-energy-assisted processes was confirmed by comparisons against a pure diffusion-based process.
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