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Formation of submillimeter liquid‐encapsulated gas bubbles in an immiscible liquid
Author(s) -
Mori Yasuhiko H.,
Kogo Yasuyuki,
Kaminaga Keiji
Publication year - 1989
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280450408
Subject(s) - nozzle , materials science , tube (container) , bubble , liquid gas , mechanics , liquid phase , thermodynamics , composite material , physics
A simple device is described which enables a steady formation of small ‘two‐phase bubbles’ each consisting of a core of a gas and a shell of a liquid which is immiscible with the surrounding liquid. The device is essentially a fine double‐tube nozzle which permits parallel feedings of the gas and the liquid to its tip having a particular configuration. It has been found that the device successfully releases into a pool of pure water, liquid‐fluorocarbonencapsulated bubbles of uniform diameter of less than 1 mm. The function of the device is lost, however, when the water is contaminated with surfactants. The device may be applicable to some extraction processes whose efficiency should be increased by producing small liquid‐encapsulated bubbles.