Threshold flux in fouling of UF membranes by colloidal iron

Y. Soffer; A. Adin; J. Gilron

doi:10.1016/S0011-9164(03)00702-1

Threshold flux in fouling of UF membranes by colloidal iron

Y. Soffer, A. Adin, J. Gilron

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

27 Scopus citations

Abstract

Fouling of 50 kDa MWCO UF membranes by iron colloid solutions was studied under constant pressure conditions and constant flux conditions at pH 5 and 7 and at various iron concentrations. By using measurements of both deposit density and changes in the transmembrane zeta potential, threshold fluxes were found that were significantly lower than the critical flux based on the increase in membrane resistance. Results are consistent with the initial phase of fouling involving pore blockage followed by cake filtration-like behavior. The dependence of fouling rate on iron colloid concentration can best be understood by realizing that only a small fraction of the iron colloid is of a size that contributes to fouling.

Original language	English
Pages (from-to)	207-221
Number of pages	15
Journal	Desalination
Volume	161
Issue number	3
DOIs	https://doi.org/10.1016/S0011-9164(03)00702-1
State	Published - 1 Mar 2004

Keywords

Colloidal iron
Critical flux
Fouling
Threshold flux
Zeta potential

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science
Water Science and Technology
Mechanical Engineering

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10.1016/S0011-9164(03)00702-1

Cite this

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title = "Threshold flux in fouling of UF membranes by colloidal iron",

abstract = "Fouling of 50 kDa MWCO UF membranes by iron colloid solutions was studied under constant pressure conditions and constant flux conditions at pH 5 and 7 and at various iron concentrations. By using measurements of both deposit density and changes in the transmembrane zeta potential, threshold fluxes were found that were significantly lower than the critical flux based on the increase in membrane resistance. Results are consistent with the initial phase of fouling involving pore blockage followed by cake filtration-like behavior. The dependence of fouling rate on iron colloid concentration can best be understood by realizing that only a small fraction of the iron colloid is of a size that contributes to fouling.",

keywords = "Colloidal iron, Critical flux, Fouling, Threshold flux, Zeta potential",

author = "Y. Soffer and A. Adin and J. Gilron",

note = "Funding Information: This work was partially supported by an infrastructure grant from the Israel Ministry of Sciencea nd forms part of the PhD dissertationo f Y. Soffer. Dr. Luba Rubenstein( Hebrew University) helpedw ith the particle size distribution and zeta potential measurementso f the iron oxide colloids. Prof. 0. Kedem is gratefully acknowledged for helpful discussions during the preparationo f this manuscript.",

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doi = "10.1016/S0011-9164(03)00702-1",

language = "English",

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T1 - Threshold flux in fouling of UF membranes by colloidal iron

AU - Soffer, Y.

AU - Adin, A.

AU - Gilron, J.

N1 - Funding Information: This work was partially supported by an infrastructure grant from the Israel Ministry of Sciencea nd forms part of the PhD dissertationo f Y. Soffer. Dr. Luba Rubenstein( Hebrew University) helpedw ith the particle size distribution and zeta potential measurementso f the iron oxide colloids. Prof. 0. Kedem is gratefully acknowledged for helpful discussions during the preparationo f this manuscript.

PY - 2004/3/1

Y1 - 2004/3/1

N2 - Fouling of 50 kDa MWCO UF membranes by iron colloid solutions was studied under constant pressure conditions and constant flux conditions at pH 5 and 7 and at various iron concentrations. By using measurements of both deposit density and changes in the transmembrane zeta potential, threshold fluxes were found that were significantly lower than the critical flux based on the increase in membrane resistance. Results are consistent with the initial phase of fouling involving pore blockage followed by cake filtration-like behavior. The dependence of fouling rate on iron colloid concentration can best be understood by realizing that only a small fraction of the iron colloid is of a size that contributes to fouling.

AB - Fouling of 50 kDa MWCO UF membranes by iron colloid solutions was studied under constant pressure conditions and constant flux conditions at pH 5 and 7 and at various iron concentrations. By using measurements of both deposit density and changes in the transmembrane zeta potential, threshold fluxes were found that were significantly lower than the critical flux based on the increase in membrane resistance. Results are consistent with the initial phase of fouling involving pore blockage followed by cake filtration-like behavior. The dependence of fouling rate on iron colloid concentration can best be understood by realizing that only a small fraction of the iron colloid is of a size that contributes to fouling.

KW - Colloidal iron

KW - Critical flux

KW - Fouling

KW - Threshold flux

KW - Zeta potential

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U2 - 10.1016/S0011-9164(03)00702-1

DO - 10.1016/S0011-9164(03)00702-1

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AN - SCOPUS:1842589246

SN - 0011-9164

VL - 161

SP - 207

EP - 221

JO - Desalination

JF - Desalination

IS - 3

ER -

Threshold flux in fouling of UF membranes by colloidal iron

Abstract

Keywords

ASJC Scopus subject areas

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