TY - JOUR
T1 - Agglomeration and rapid ascent of microbubbles by ultrasonic irradiation
AU - Kobayashi, Daisuke
AU - Hayashida, Yoshiyuki
AU - Sano, Kazuki
AU - Terasaka, Koichi
PY - 2011/9
Y1 - 2011/9
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
KW - Agglomeration
KW - Bjerknes force
KW - Electrical repulsive force
KW - Microbubble
KW - Ultrasonic irradiation
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U2 - 10.1016/j.ultsonch.2010.11.005
DO - 10.1016/j.ultsonch.2010.11.005
M3 - Article
C2 - 21186134
AN - SCOPUS:79956353746
VL - 18
SP - 1193
EP - 1196
JO - Ultrasonics Sonochemistry
JF - Ultrasonics Sonochemistry
SN - 1350-4177
IS - 5
ER -