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Oxygen Absorption into Stirred Emulsions of n-Alkanes
Joint Authors
Source
International Journal of Chemical Engineering
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-07-25
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
Absorption of pure oxygen into aqueous emulsions of n-heptane, n-dodecane, and n-hexadecane, respectively, has been studied at 0 to 100% oil volume fraction in a stirred tank at the stirring speed of 1000 min−1.
The volumetric mass transfer coefficient, kLa, was evaluated from the pressure decrease under isochoric and isothermal (298.2 K) conditions.
The O/W emulsions of both n-dodecane and n-hexadecane show a kLa maximum at 1-2% oil fraction as reported in several previous studies.
Much stronger effects never reported before were observed at high oil fractions.
Particularly, all n-heptane emulsions showed higher mass-transfer coefficients than both of the pure phases.
The increase is by upto a factor of 38 as compared to pure water at 50% n-heptane.
The effect is tentatively interpreted by oil spreading on the bubble surface enabled by a high spreading coefficient.
In W/O emulsions of n-heptane and n-dodecane kLa increases with the dispersed water volume fraction; the reason for this surprising trend is not clear.
American Psychological Association (APA)
Ngo, Thanh Hai& Schumpe, Adrian. 2012. Oxygen Absorption into Stirred Emulsions of n-Alkanes. International Journal of Chemical Engineering،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-458744
Modern Language Association (MLA)
Ngo, Thanh Hai& Schumpe, Adrian. Oxygen Absorption into Stirred Emulsions of n-Alkanes. International Journal of Chemical Engineering No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-458744
American Medical Association (AMA)
Ngo, Thanh Hai& Schumpe, Adrian. Oxygen Absorption into Stirred Emulsions of n-Alkanes. International Journal of Chemical Engineering. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-458744
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-458744