Effect of slug flow on dextran ultrafiltration in ceramic membrane process

Feng Zhang; Wenheng Jing; Weihong Xing

Effect of slug flow on dextran ultrafiltration in ceramic membrane process

Feng Zhang, Wenheng Jing, Weihong Xing

College of Chemical Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The ceramic membrane process has been encountered with a problem of high energy consuming owing to that high crossflow velocities are necessary for the concentration polarization and membrane fouling control. On the other hand, the external loop airlift reactor is widely used in the field of chemical engineering. Thus, the application of air sparging in dextran ultrafiltration with ceramic membrane process is studied at different gas flow rates (Q_G). 87% increase in permeation flux was achieved while filtering 2 g·L^-1 dextran (2×10⁶) solution with the airlift crossflow operation of QG=400 L·h^-1. Hydrodynamics of the gas-liquid two-phase flow was characterized and the flux enhancement mechanism in the case of slug flow in tubular ceramic membrane was discussed.

Original language	English
Pages (from-to)	2792-2797
Number of pages	6
Journal	Huagong Xuebao/CIESC Journal
Volume	60
Issue number	11
State	Published - Nov 2009

Keywords

Airlift
Ceramic membrane
Concentration polarization
Dextran
Ultrafiltration

Cite this

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title = "Effect of slug flow on dextran ultrafiltration in ceramic membrane process",

abstract = "The ceramic membrane process has been encountered with a problem of high energy consuming owing to that high crossflow velocities are necessary for the concentration polarization and membrane fouling control. On the other hand, the external loop airlift reactor is widely used in the field of chemical engineering. Thus, the application of air sparging in dextran ultrafiltration with ceramic membrane process is studied at different gas flow rates (QG). 87% increase in permeation flux was achieved while filtering 2 g·L-1 dextran (2×106) solution with the airlift crossflow operation of QG=400 L·h-1. Hydrodynamics of the gas-liquid two-phase flow was characterized and the flux enhancement mechanism in the case of slug flow in tubular ceramic membrane was discussed.",

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author = "Feng Zhang and Wenheng Jing and Weihong Xing",

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T1 - Effect of slug flow on dextran ultrafiltration in ceramic membrane process

AU - Zhang, Feng

AU - Jing, Wenheng

AU - Xing, Weihong

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N2 - The ceramic membrane process has been encountered with a problem of high energy consuming owing to that high crossflow velocities are necessary for the concentration polarization and membrane fouling control. On the other hand, the external loop airlift reactor is widely used in the field of chemical engineering. Thus, the application of air sparging in dextran ultrafiltration with ceramic membrane process is studied at different gas flow rates (QG). 87% increase in permeation flux was achieved while filtering 2 g·L-1 dextran (2×106) solution with the airlift crossflow operation of QG=400 L·h-1. Hydrodynamics of the gas-liquid two-phase flow was characterized and the flux enhancement mechanism in the case of slug flow in tubular ceramic membrane was discussed.

AB - The ceramic membrane process has been encountered with a problem of high energy consuming owing to that high crossflow velocities are necessary for the concentration polarization and membrane fouling control. On the other hand, the external loop airlift reactor is widely used in the field of chemical engineering. Thus, the application of air sparging in dextran ultrafiltration with ceramic membrane process is studied at different gas flow rates (QG). 87% increase in permeation flux was achieved while filtering 2 g·L-1 dextran (2×106) solution with the airlift crossflow operation of QG=400 L·h-1. Hydrodynamics of the gas-liquid two-phase flow was characterized and the flux enhancement mechanism in the case of slug flow in tubular ceramic membrane was discussed.

KW - Airlift

KW - Ceramic membrane

KW - Concentration polarization

KW - Dextran

KW - Ultrafiltration

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M3 - 文章

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SN - 0438-1157

VL - 60

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JO - Huagong Xuebao/CIESC Journal

JF - Huagong Xuebao/CIESC Journal

IS - 11

ER -

Effect of slug flow on dextran ultrafiltration in ceramic membrane process

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Keywords

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