The Canadian Journal of Chemical Engineering

Article

Gas Holdup and Solid-Liquid Mass Transfer in Newtonian and non-Newtonian Fluids in Bubble Columns

U. K. Ghosh

Department of Chemical Engineering & Technology, Centre of Advance Study, Institute of Technology, Banaras Hindu University, Varanasi - 221005, INDIA

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S. N. Upadhyay,

Corresponding Author

S. N. Upadhyay

[email protected]

Department of Chemical Engineering & Technology, Centre of Advance Study, Institute of Technology, Banaras Hindu University, Varanasi - 221005, INDIA

Department of Chemical Engineering & Technology, Centre of Advance Study, Institute of Technology, Banaras Hindu University, Varanasi - 221005, INDIASearch for more papers by this author

U. K. Ghosh,

U. K. Ghosh

Department of Chemical Engineering & Technology, Centre of Advance Study, Institute of Technology, Banaras Hindu University, Varanasi - 221005, INDIA

Search for more papers by this author

S. N. Upadhyay,

Corresponding Author

S. N. Upadhyay

[email protected]

Department of Chemical Engineering & Technology, Centre of Advance Study, Institute of Technology, Banaras Hindu University, Varanasi - 221005, INDIA

Department of Chemical Engineering & Technology, Centre of Advance Study, Institute of Technology, Banaras Hindu University, Varanasi - 221005, INDIASearch for more papers by this author

First published: 19 May 2008

https://doi.org/10.1002/cjce.5450850604

Citations: 9

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Abstract

Gas holdup and surface-liquid mass transfer rate in a bubble column have been experimentally investigated. De-mineralized water, 0.5 and 1.0% aqueous solutions of carboxy methyl cellulose (CMC), and 60% aqueous propylene glycol have been used as the test liquids. Effects of column diameter, liquid height to column diameter ratio, superficial gas velocity and liquid phase viscosity on gas holdup and mass transfer rate are studied. Generalized correlations for the average gas holdup and wall to liquid heat and mass transfer coefficients are proposed. These are valid for both Newtonian and pseudoplastic non-Newtonian fluids.

Abstract

On a étudié de manière expérimentale la rétention de gaz et le taux de transfert de matière dans une colonne à bulles. De l'eau déminéralisée, des solutions aqueuses de 0,5% et 1,0% de carboxyméthylcellulose (CMC) et de 60% de propylène glycol ont été utilisées comme liquides d'essai. Les effets du diamètre de colonne, du rapport entre la hauteur de liquide et le diamètre de colonne, de la vitesse de gaz superficielle et de la viscosité de la phase liquide sur la rétention de gaz et le taux de transfert de matière, ont été étudiés. On propose des corrélations généralisées pour la rétention de gaz moyenne et les coefficients de transfert de matière paroi-liquide moyens. Celles-ci sont valides à la fois pour des fluides newtoniens et non newtoniens pseudoplastiques.

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Volume85, Issue6

December 2007

Pages 825-832

Gas Holdup and Solid-Liquid Mass Transfer in Newtonian and non-Newtonian Fluids in Bubble Columns

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Gas Holdup and Solid-Liquid Mass Transfer in Newtonian and non-Newtonian Fluids in Bubble Columns

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