Fouling and regeneration of ceramic microfiltration membranes in processing acid wastewater containing fine TiO2 particles

Yijiang Zhao; Jing Zhong; Hong Li; Nanping Xu; Jun Shi

doi:10.1016/S0376-7388(02)00314-9

Fouling and regeneration of ceramic microfiltration membranes in processing acid wastewater containing fine TiO₂ particles

Yijiang Zhao, Jing Zhong, Hong Li, Nanping Xu, Jun Shi

College of Chemical Engineering

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

64 Scopus citations

Abstract

Both the fouling mechanisms and the regeneration of two asymmetric microporous Al₂O₃ MF membranes for the recovery of fine TiO₂ particles in acid wastestreams were investigated. The fouling was mainly caused by particle deposition, ion adsorption, and gel polarization. The foulants include TiO₂ particles and sulfates. The effect of operation conditions including membrane pore size, transmembrane pressure, and cross-flow velocity (CFV) on the fouling were also investigated, and the appropriate conditions were obtained. Membrane regeneration was achieved by backpulsing and chemical cleaning. Backpulsing is an effective method for reducing fouling extent of 1.0μm pore-size membrane. The optimum backpulsing conditions are also determined. The effective cleaning agent is 0.5mol/l oxalic acid solution.

Original language	English
Pages (from-to)	331-341
Number of pages	11
Journal	Journal of Membrane Science
Volume	208
Issue number	1-2
DOIs	https://doi.org/10.1016/S0376-7388(02)00314-9
State	Published - 1 Oct 2002

Keywords

Acid TiO suspension
Ceramic membranes
Membrane fouling
Membrane regeneration
Microfiltration

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10.1016/S0376-7388(02)00314-9

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title = "Fouling and regeneration of ceramic microfiltration membranes in processing acid wastewater containing fine TiO2 particles",

abstract = "Both the fouling mechanisms and the regeneration of two asymmetric microporous Al2O3 MF membranes for the recovery of fine TiO2 particles in acid wastestreams were investigated. The fouling was mainly caused by particle deposition, ion adsorption, and gel polarization. The foulants include TiO2 particles and sulfates. The effect of operation conditions including membrane pore size, transmembrane pressure, and cross-flow velocity (CFV) on the fouling were also investigated, and the appropriate conditions were obtained. Membrane regeneration was achieved by backpulsing and chemical cleaning. Backpulsing is an effective method for reducing fouling extent of 1.0μm pore-size membrane. The optimum backpulsing conditions are also determined. The effective cleaning agent is 0.5mol/l oxalic acid solution.",

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T1 - Fouling and regeneration of ceramic microfiltration membranes in processing acid wastewater containing fine TiO2 particles

AU - Zhao, Yijiang

AU - Zhong, Jing

AU - Li, Hong

AU - Xu, Nanping

AU - Shi, Jun

PY - 2002/10/1

Y1 - 2002/10/1

N2 - Both the fouling mechanisms and the regeneration of two asymmetric microporous Al2O3 MF membranes for the recovery of fine TiO2 particles in acid wastestreams were investigated. The fouling was mainly caused by particle deposition, ion adsorption, and gel polarization. The foulants include TiO2 particles and sulfates. The effect of operation conditions including membrane pore size, transmembrane pressure, and cross-flow velocity (CFV) on the fouling were also investigated, and the appropriate conditions were obtained. Membrane regeneration was achieved by backpulsing and chemical cleaning. Backpulsing is an effective method for reducing fouling extent of 1.0μm pore-size membrane. The optimum backpulsing conditions are also determined. The effective cleaning agent is 0.5mol/l oxalic acid solution.

AB - Both the fouling mechanisms and the regeneration of two asymmetric microporous Al2O3 MF membranes for the recovery of fine TiO2 particles in acid wastestreams were investigated. The fouling was mainly caused by particle deposition, ion adsorption, and gel polarization. The foulants include TiO2 particles and sulfates. The effect of operation conditions including membrane pore size, transmembrane pressure, and cross-flow velocity (CFV) on the fouling were also investigated, and the appropriate conditions were obtained. Membrane regeneration was achieved by backpulsing and chemical cleaning. Backpulsing is an effective method for reducing fouling extent of 1.0μm pore-size membrane. The optimum backpulsing conditions are also determined. The effective cleaning agent is 0.5mol/l oxalic acid solution.

KW - Acid TiO suspension

KW - Ceramic membranes

KW - Membrane fouling

KW - Membrane regeneration

KW - Microfiltration

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DO - 10.1016/S0376-7388(02)00314-9

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VL - 208

SP - 331

EP - 341

JO - Journal of Membrane Science

JF - Journal of Membrane Science

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ER -

Fouling and regeneration of ceramic microfiltration membranes in processing acid wastewater containing fine TiO₂ particles

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Keywords

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