Electric Coalescence of Two Neighboring Water Droplets Supported in Oil Phase under a Microscope

Electric coalescence of two neighboring water droplets was examined as a fundamental study of the coalescence mechanism by using the systems of kerosene (continuous phase) -Span 80 (surfactant) -NaCl aqueous solution (drop phase) and kerosene- NaCl aqueous solution. In the experiments, two nozzles w...

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Published inKAGAKU KOGAKU RONBUNSHU Vol. 14; no. 4; pp. 483 - 489
Main Authors Yamaguchi, Manabu, Ohbori, Kohzi, Kondo, Osamu, Katayama, Takashi
Format Journal Article
LanguageJapanese
English
Published The Society of Chemical Engineers, Japan 1988
Subjects
Demulsification
Electric Droplet Coalescence
Electric Field
Phase Separation
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Summary:Electric coalescence of two neighboring water droplets was examined as a fundamental study of the coalescence mechanism by using the systems of kerosene (continuous phase) -Span 80 (surfactant) -NaCl aqueous solution (drop phase) and kerosene- NaCl aqueous solution. In the experiments, two nozzles were set horizontally opposite each other on the same centerline and separated by a given distance, and two water droplets of the same size were partially formed at the tips of the two nozzles in the kerosene solution. A pair of droplets consisted of either charged water drops or uncharged water drops coalsced with each other in electric fields of microscopic scale. The respective coalescence mechanisms are discussed with reference to Taylor' s model and Latham and Roxburgh' s model.
ISSN:0386-216X
1349-9203
DOI:10.1252/kakoronbunshu.14.483