Reproducing the pressure–time signature of membrane filtration: The interplay between fouling, caking, and elasticity

J.G. Herterich; I.M. Griffiths; D. Vella

doi:10.1016/j.memsci.2018.12.073

Reproducing the pressure–time signature of membrane filtration: The interplay between fouling, caking, and elasticity

J.G. Herterich, I.M. Griffiths, D. Vella

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

8 Scopus citations

Abstract

We develop a mathematical model of direct-flow filtration operating at constant flux to understand the pressure–time signature. We combine the effects of fluid flow with those of membrane fouling and caking to explain the gradual increase in driving pressure that is often reported. We model the periodic backflushes used to clean such membranes and show that the elasticity of the membrane may explain the limited effectiveness of these backflushes. We also consider strategies for the operation of direct-flow filtration and show that tuning the flux and rate of backflushing, as well as the membrane material structure, may allow for improvements in membrane performance.

Original language	English (US)
Pages (from-to)	235-248
Number of pages	14
Journal	Journal of Membrane Science
Volume	577
DOIs	https://doi.org/10.1016/j.memsci.2018.12.073
State	Published - May 2019
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2021-03-12
Acknowledged KAUST grant number(s): KUK-C1-013-04
Acknowledgements: JGH was supported by Award No. KUK-C1-013-04, made by King Abdullah University of Science and Technology (KAUST), and the Bracken Bequest. IMG is grateful to the Royal Society for funding through a University Research Fellowship.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

ASJC Scopus subject areas

Biochemistry
Filtration and Separation
General Materials Science
Physical and Theoretical Chemistry

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10.1016/j.memsci.2018.12.073

Cite this

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title = "Reproducing the pressure–time signature of membrane filtration: The interplay between fouling, caking, and elasticity",

abstract = "We develop a mathematical model of direct-flow filtration operating at constant flux to understand the pressure–time signature. We combine the effects of fluid flow with those of membrane fouling and caking to explain the gradual increase in driving pressure that is often reported. We model the periodic backflushes used to clean such membranes and show that the elasticity of the membrane may explain the limited effectiveness of these backflushes. We also consider strategies for the operation of direct-flow filtration and show that tuning the flux and rate of backflushing, as well as the membrane material structure, may allow for improvements in membrane performance.",

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AU - Griffiths, I.M.

AU - Vella, D.

N1 - KAUST Repository Item: Exported on 2021-03-12 Acknowledged KAUST grant number(s): KUK-C1-013-04 Acknowledgements: JGH was supported by Award No. KUK-C1-013-04, made by King Abdullah University of Science and Technology (KAUST), and the Bracken Bequest. IMG is grateful to the Royal Society for funding through a University Research Fellowship. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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AB - We develop a mathematical model of direct-flow filtration operating at constant flux to understand the pressure–time signature. We combine the effects of fluid flow with those of membrane fouling and caking to explain the gradual increase in driving pressure that is often reported. We model the periodic backflushes used to clean such membranes and show that the elasticity of the membrane may explain the limited effectiveness of these backflushes. We also consider strategies for the operation of direct-flow filtration and show that tuning the flux and rate of backflushing, as well as the membrane material structure, may allow for improvements in membrane performance.

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JF - Journal of Membrane Science

ER -

Reproducing the pressure–time signature of membrane filtration: The interplay between fouling, caking, and elasticity

Abstract

Bibliographical note

ASJC Scopus subject areas

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