Effect of the concentration polarization on the fouling driving force of UF membranes

Sonia Vulf; Iris Sutzkover-Gutman; David Hasson; Raphael Semiat

doi:10.5004/dwt.2011.2392

Effect of the concentration polarization on the fouling driving force of UF membranes

Sonia Vulf, Iris Sutzkover-Gutman, David Hasson^*, Raphael Semiat

^*Corresponding author for this work

Chemical Engineering

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

3 Scopus citations

Abstract

The main objective of this work was to investigate the effect of foulant concentration prevailing at the membrane surface on the rate of flux decline. The significant role of foulant membrane concentration was highlighted by analysis of the well-known filtration blocking laws. All blocking mechanisms were found to predict that the initial fouling rate depends on the product of feed concentration and initial permeate flow rate. Humic acid fouling data were analyzed to provide values of the fouling rate dJ_v/dt vs. membrane surface concentration C_m. The data of all runs, covering a rather broad range of conditions, fell within a narrow band thus supporting the contention that foulant concentration on the membrane is one of the main parameters governing the fouling rate.

Original language	English
Pages (from-to)	54-58
Number of pages	5
Journal	Desalination and Water Treatment
Volume	31
Issue number	1-3
DOIs	https://doi.org/10.5004/dwt.2011.2392
State	Published - Jul 2011

Keywords

Concentration polarization
Critical flux
Fouling
Humic acid
UF membrane

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abstract = "The main objective of this work was to investigate the effect of foulant concentration prevailing at the membrane surface on the rate of flux decline. The significant role of foulant membrane concentration was highlighted by analysis of the well-known filtration blocking laws. All blocking mechanisms were found to predict that the initial fouling rate depends on the product of feed concentration and initial permeate flow rate. Humic acid fouling data were analyzed to provide values of the fouling rate dJv/dt vs. membrane surface concentration Cm. The data of all runs, covering a rather broad range of conditions, fell within a narrow band thus supporting the contention that foulant concentration on the membrane is one of the main parameters governing the fouling rate.",

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AU - Vulf, Sonia

AU - Sutzkover-Gutman, Iris

AU - Hasson, David

AU - Semiat, Raphael

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AB - The main objective of this work was to investigate the effect of foulant concentration prevailing at the membrane surface on the rate of flux decline. The significant role of foulant membrane concentration was highlighted by analysis of the well-known filtration blocking laws. All blocking mechanisms were found to predict that the initial fouling rate depends on the product of feed concentration and initial permeate flow rate. Humic acid fouling data were analyzed to provide values of the fouling rate dJv/dt vs. membrane surface concentration Cm. The data of all runs, covering a rather broad range of conditions, fell within a narrow band thus supporting the contention that foulant concentration on the membrane is one of the main parameters governing the fouling rate.

KW - Concentration polarization

KW - Critical flux

KW - Fouling

KW - Humic acid

KW - UF membrane

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