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High oxygen transfer rate in a new aeration system using hollow fiber membrane

High oxygen transfer rate in a new aeration system using hollow fiber membrane 10.1002/bit.260400303.abs A new type of bubble aeration column called a hollow fiber membrane (HFM) aeration column was proposed, which was featured in the use of hollow fiber membranes and gave a high bubble density in the column. The value of kLa was increased by modifying the membrane surface for making the pore size smaller. The Sauter mean diameter of bubbles (Dvs) was 2.0 ± 0.1 mm in the range of the superficial gas velocity from 0.02 m s−1 to 0.065 m s−1, while that obtained for the bubbles near the membrane was 811 μm at the superficial gas velocity of 4.0 × 10−4 m s−1. The difference was ascribed to the effect of coalescence of bubbles. The value of KLa increased in proportion to the superficial gas velocity up to 0.02 m s−1, and was almost constant above 0.03 m s−1. The maximum value of kLa, 2.5 s−1, was higher than those of the other aeration columns reported previously. The pneumatic power consumption per unit liquid volume (Pv) for obtaining the same kLa was the smallest in the HFM aeration columns. Pv, for obtaining the same interfacial area of bubbles per liquid volume, was also lower than those for other types of aeration columns. It was suggested from the measurement of bubble diameter that the larger interfacial area generated in the HFM aeration column ascribes to the larger gas holdup than the smaller Dvs. © 1992 John Wiley & Sons, Inc. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Biotechnology and Bioengineering Wiley

High oxygen transfer rate in a new aeration system using hollow fiber membrane

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References (26)

Publisher
Wiley
Copyright
Copyright © 1992 John Wiley & Sons, Inc.
ISSN
0006-3592
eISSN
1097-0290
DOI
10.1002/bit.260400303
pmid
18601124
Publisher site
See Article on Publisher Site

Abstract

10.1002/bit.260400303.abs A new type of bubble aeration column called a hollow fiber membrane (HFM) aeration column was proposed, which was featured in the use of hollow fiber membranes and gave a high bubble density in the column. The value of kLa was increased by modifying the membrane surface for making the pore size smaller. The Sauter mean diameter of bubbles (Dvs) was 2.0 ± 0.1 mm in the range of the superficial gas velocity from 0.02 m s−1 to 0.065 m s−1, while that obtained for the bubbles near the membrane was 811 μm at the superficial gas velocity of 4.0 × 10−4 m s−1. The difference was ascribed to the effect of coalescence of bubbles. The value of KLa increased in proportion to the superficial gas velocity up to 0.02 m s−1, and was almost constant above 0.03 m s−1. The maximum value of kLa, 2.5 s−1, was higher than those of the other aeration columns reported previously. The pneumatic power consumption per unit liquid volume (Pv) for obtaining the same kLa was the smallest in the HFM aeration columns. Pv, for obtaining the same interfacial area of bubbles per liquid volume, was also lower than those for other types of aeration columns. It was suggested from the measurement of bubble diameter that the larger interfacial area generated in the HFM aeration column ascribes to the larger gas holdup than the smaller Dvs. © 1992 John Wiley & Sons, Inc.

Journal

Biotechnology and Bioengineering – Wiley

Published: Jul 1, 1992

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