Ultrasound-enhanced mass transfer during the growth and dissolution of surface gas bubbles

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dc.contributor.author Peñas López, Pablo
dc.contributor.author Moreno Soto, Álvaro
dc.contributor.author Lohse, Detlef
dc.contributor.author Lajoinie, Guillaume
dc.contributor.author Van Der Meer, Devaraj
dc.date.accessioned 2022-02-02T09:09:04Z
dc.date.available 2022-02-02T09:09:04Z
dc.date.issued 2021-08
dc.identifier.bibliographicCitation Peñas, P., Moreno Soto, L., Lohse, D., Lajoinie, G. & van der Meer, D. (2021). Ultrasound-enhanced mass transfer during the growth and dissolution of surface gas bubbles. International Journal of Heat and Mass Transfer, 174, 121069.
dc.identifier.issn 0017-9310
dc.identifier.uri http://hdl.handle.net/10016/34009
dc.description.abstract Proper understanding and control of the mass transfer capability of acoustically-driven gas bubbles is crucial for the safety of biomedical applications and the efficiency of many electrochemical processes. Here, we quantify experimentally the effect of ultrasound on the rate of dissolution and growth of a gas bubble in contact with a solid surface, focusing on the dynamics of the bubble radius on the diffusive time scale. Significant degrees of super- or undersaturation of the surrounding carbonated water ensure that acoustic microstreaming stands as the predominant mechanism behind the mass-transfer enhancement across the bubble surface during resonance. Single-frequency acoustic driving can momentarily amplify the rate of mass transfer by as much as two orders of magnitude; the overall mass transfer enhancement increases monotonically with the acoustic pressure amplitude and eventually plateaus. Frequency sweeps continuously looped in time prove a superior method of intensification. Provided that the sweep period is not too short, the direction of sweep matters: up-sweeps generally favour dissolution over growth, whereas down-sweeps favour growth over dissolution. An optimal sweep period that maximises the growth or dissolution process is shown to exist.
dc.description.sponsorship This work was supported by the Netherlands Center for Multiscale Catalytic Energy Conversion (MCEC), an NWO Gravitation program funded by the Ministry of Education, Culture and Science of the government of the Netherlands. The authors also thank Gert-Wim Bruggert for his invaluable technical support concerning the experimental set-up.
dc.format.extent 12
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license.
dc.rights Atribución 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by/3.0/es/
dc.subject.other Gas bubble
dc.subject.other Ultrasound
dc.subject.other Mass transfer
dc.subject.other Diffusive growth
dc.subject.other Dissolution
dc.subject.other Acoustic microstreaming
dc.title Ultrasound-enhanced mass transfer during the growth and dissolution of surface gas bubbles
dc.type article
dc.subject.eciencia Física
dc.subject.eciencia Ingeniería Industrial
dc.subject.eciencia Ingeniería Mecánica
dc.subject.eciencia Materiales
dc.identifier.doi https://doi.org/10.1016/j.ijheatmasstransfer.2021.121069
dc.rights.accessRights openAccess
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 121069
dc.identifier.publicationlastpage 12
dc.identifier.publicationtitle International Journal of Heat and Mass Transfer
dc.identifier.publicationvolume 174
dc.identifier.uxxi AR/0000029098
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