Agglomeration and rapid ascent of microbubbles by ultrasonic irradiation

Daisuke Kobayashi; Yoshiyuki Hayashida; Kazuki Sano; Koichi Terasaka

doi:10.1016/j.ultsonch.2010.11.005

Agglomeration and rapid ascent of microbubbles by ultrasonic irradiation

Daisuke Kobayashi, Yoshiyuki Hayashida, Kazuki Sano, Koichi Terasaka

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Microbubbles have some different characteristics from conventional bubbles. To apply the useful properties for gas-liquid contact operation in industry, however, a separate technology of microbubbles has to be realized. In this study, promotion of microbubble separation using ultrasound was proposed. By irradiating with ultrasound, milky white microbubbles suspended solution changed instantaneously to be clear. The interesting behavior of microbubbles observed in the ultrasonic field was investigated by microscopic and macroscopic visualizations. The rapid ascent of microbubbles was caused by their agglomeration, where the Bjerknes force of attraction and electrical repulsive force on microbubble surface acted. Ultrasonic irradiation into microbubble suspended solution was very useful for dynamic operation of microbubbles. Crown

Original language	English
Pages (from-to)	1193-1196
Number of pages	4
Journal	Ultrasonics Sonochemistry
Volume	18
Issue number	5
DOIs	https://doi.org/10.1016/j.ultsonch.2010.11.005
Publication status	Published - 2011 Sep

Keywords

Agglomeration
Bjerknes force
Electrical repulsive force
Microbubble
Ultrasonic irradiation

ASJC Scopus subject areas

Chemical Engineering (miscellaneous)
Environmental Chemistry
Radiology Nuclear Medicine and imaging
Acoustics and Ultrasonics
Organic Chemistry
Inorganic Chemistry

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title = "Agglomeration and rapid ascent of microbubbles by ultrasonic irradiation",

abstract = "Microbubbles have some different characteristics from conventional bubbles. To apply the useful properties for gas-liquid contact operation in industry, however, a separate technology of microbubbles has to be realized. In this study, promotion of microbubble separation using ultrasound was proposed. By irradiating with ultrasound, milky white microbubbles suspended solution changed instantaneously to be clear. The interesting behavior of microbubbles observed in the ultrasonic field was investigated by microscopic and macroscopic visualizations. The rapid ascent of microbubbles was caused by their agglomeration, where the Bjerknes force of attraction and electrical repulsive force on microbubble surface acted. Ultrasonic irradiation into microbubble suspended solution was very useful for dynamic operation of microbubbles. Crown",

keywords = "Agglomeration, Bjerknes force, Electrical repulsive force, Microbubble, Ultrasonic irradiation",

author = "Daisuke Kobayashi and Yoshiyuki Hayashida and Kazuki Sano and Koichi Terasaka",

note = "Funding Information: This research was supported in a part by a Grant-in-Aid for Scientific Research (No. 20760524 ) from the Ministry of Education, Culture, Sports, Science and Technology . ",

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AU - Kobayashi, Daisuke

AU - Hayashida, Yoshiyuki

AU - Sano, Kazuki

AU - Terasaka, Koichi

N1 - Funding Information: This research was supported in a part by a Grant-in-Aid for Scientific Research (No. 20760524 ) from the Ministry of Education, Culture, Sports, Science and Technology .

PY - 2011/9

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N2 - Microbubbles have some different characteristics from conventional bubbles. To apply the useful properties for gas-liquid contact operation in industry, however, a separate technology of microbubbles has to be realized. In this study, promotion of microbubble separation using ultrasound was proposed. By irradiating with ultrasound, milky white microbubbles suspended solution changed instantaneously to be clear. The interesting behavior of microbubbles observed in the ultrasonic field was investigated by microscopic and macroscopic visualizations. The rapid ascent of microbubbles was caused by their agglomeration, where the Bjerknes force of attraction and electrical repulsive force on microbubble surface acted. Ultrasonic irradiation into microbubble suspended solution was very useful for dynamic operation of microbubbles. Crown

AB - Microbubbles have some different characteristics from conventional bubbles. To apply the useful properties for gas-liquid contact operation in industry, however, a separate technology of microbubbles has to be realized. In this study, promotion of microbubble separation using ultrasound was proposed. By irradiating with ultrasound, milky white microbubbles suspended solution changed instantaneously to be clear. The interesting behavior of microbubbles observed in the ultrasonic field was investigated by microscopic and macroscopic visualizations. The rapid ascent of microbubbles was caused by their agglomeration, where the Bjerknes force of attraction and electrical repulsive force on microbubble surface acted. Ultrasonic irradiation into microbubble suspended solution was very useful for dynamic operation of microbubbles. Crown

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KW - Electrical repulsive force

KW - Microbubble

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