Research Article
Apr 1977
Device for Evaluating Coalescence of Oil Emulsion
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VIEW THE REPLYPublication: Journal of the Environmental Engineering Division
Volume 103, Issue 2
Abstract
System variables studied include media wettability, filtration velocity, interfacial tension, coalescer depth, and oil viscosity. It was shown that media preferentially wetted by the dispersed phase were better coalescing materials for separation of the oil-water emulsions. Also, preferentially wetted media exhibit smaller head loss than nonwetted media. Coalescence efficiency decreased with increasing filtration velocity and decreasing interfacial tension. No significant differences in oil removal efficiency were found for the range of viscosities studied. Partial coalescence was obtained when a shallow bed of 0.2 cm was used. Adequate coalescence was shown to be possible with a bed depth of 0.4 cm when polyester felt was used. Higher removal efficiencies could be achieved with deeper coalescence beds. A minimum oil saturation of 10% to 15% was found to be necessary for maximum coalescence within the experimental systems studied. An increase in oil removal efficiency can be anticipated as the fibrous bed becomes saturated with oil.
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Information & Authors
Information
Published In
Journal of the Environmental Engineering Division
Volume 103 • Issue 2 • April 1977
Pages: 163 - 175
Copyright
© 1977 American Society of Civil Engineers.
History
Published in print: Apr 1977
Published online: Feb 11, 2021
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Authors
Affiliations
John-Nan Chieu
Project Engr., Engineering-Science, Inc., Houston, Tex.; formerly, Project Engr., Engineering-Science, Inc., Houston, Tex.
Robert S. Schechter
Prof. of Chemical Engrg.; Ernest Cockrell Prof., The Univ. of Texas at Austin, Austin, Tex.
Earnest F. Gloyna, F.ASCE
Dean; Coll. of Engrg., Joe J. King Prof., The Univ. of Texas at Austin, Austin, Tex.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
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