Effect of hydrodynamics and solution ionic strength on permeate flux in cross-flow filtration: Direct experimental observation of filter cake cross-sections

Volodymyr V. Tarabara; Ismail Koyuncu; Mark R. Wiesner

doi:10.1016/j.memsci.2004.04.030

Effect of hydrodynamics and solution ionic strength on permeate flux in cross-flow filtration: Direct experimental observation of filter cake cross-sections

Volodymyr V. Tarabara, Ismail Koyuncu, Mark R. Wiesner^*

^*Corresponding author for this work

Department of Environmental Engineering

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

75 Citations (Scopus)

Abstract

The structure of membrane cakes formed in cross-flow filtration was investigated for conditions of variable particle size and solution ionic strength. In all cases, microscopic examination of membrane cake cross-sections revealed a stratified structure: a dense region of the colloidal deposit adjacent to the membrane with an abrupt transition to a much more porous layer near the membrane-suspension interface. The thickness and structure of individual layers varied as functions of particle size and solution ionic strength. Relative specific hydraulic resistances of individual layers were estimated from regressed transport coefficients in a model describing macroscopic transport and permeate flux. This work provides direct experimental confirmation of trends predicted from theory that couples hydrodynamic conditions and interparticle interactions to describe the permeate flux performance of cross-flow filtration membranes.

Original language	English
Pages (from-to)	65-78
Number of pages	14
Journal	Journal of Membrane Science
Volume	241
Issue number	1
DOIs	https://doi.org/10.1016/j.memsci.2004.04.030
Publication status	Published - 15 Sept 2004

Funding

This work was supported in part by funding through the EPA Hazardous Substances Research Centers South and Southwest and in part by the Nanoscience and Engineering Initiative of the National Science Foundation under NSF Award No. EE-0118007. One of us (I.K.) also acknowledges the support by TUBITAK NATO-B1 research grant. We would like to thank Dr. Alejandro Peña (Department of Chemical Engineering, Rice University) for his help with contact angle measurements and Mr. Stephane Moustier (Centre Européen de Recherche et d’Enseignement de Géosciences de l’Environnement) for his assistance with Multisizer S. We also thank Hydranautics (Oceanside, CA) for providing us with NTR-7410 ultrafiltration membranes. Comments of two anonymous referees are gratefully acknowledged.

Funders	Funder number
Nanoscience and Engineering Initiative
TUBITAK NATO-B1
National Science Foundation	EE-0118007

Keywords

Filter cake properties
Flux modeling
Fouling
Ultrafiltration
Water treatment

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.memsci.2004.04.030

Cite this

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AB - The structure of membrane cakes formed in cross-flow filtration was investigated for conditions of variable particle size and solution ionic strength. In all cases, microscopic examination of membrane cake cross-sections revealed a stratified structure: a dense region of the colloidal deposit adjacent to the membrane with an abrupt transition to a much more porous layer near the membrane-suspension interface. The thickness and structure of individual layers varied as functions of particle size and solution ionic strength. Relative specific hydraulic resistances of individual layers were estimated from regressed transport coefficients in a model describing macroscopic transport and permeate flux. This work provides direct experimental confirmation of trends predicted from theory that couples hydrodynamic conditions and interparticle interactions to describe the permeate flux performance of cross-flow filtration membranes.

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Effect of hydrodynamics and solution ionic strength on permeate flux in cross-flow filtration: Direct experimental observation of filter cake cross-sections

Abstract

Funding

Keywords

UN SDGs

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