Simple and effective corrugation of PVDF membranes for enhanced MBR performance

Jehad A. Kharraz; M. R. Bilad; Hassan A. Arafat

doi:10.1016/j.memsci.2014.10.018

Simple and effective corrugation of PVDF membranes for enhanced MBR performance

Jehad A. Kharraz, M. R. Bilad, Hassan A. Arafat

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

45 Scopus citations

Abstract

Membrane fouling control in membrane bioreactors (MBRs) can be achieved by improving membrane properties. In this study, corrugated flat sheet polyvinylidenefluoride (PVDF) membranes were fabricated, characterized and tested in a lab-scale MBR for improved filterability and fouling resistance. A simple imprinting step was successfully developed and applied as part of the membrane preparation procedure, via phase inversion, to form corrugations on the membrane surface. The corrugation consisted of valleys-and-hills topography, which increased membrane effective surface area (A_E) by ~50%. It also increased the membrane mean pore size (PS) as a result of changes in formation mechanism. Both higher A_E and larger PS increased membrane permeability to about 5-6 times compared to the non-corrugated membrane, prepared under similar conditions. Surface corrugations reduced membrane fouling propensity as observed from the flux-stepping test and a lab-scale MBR operation, without affecting permeate quality.

Original language	British English
Pages (from-to)	91-100
Number of pages	10
Journal	Journal of Membrane Science
Volume	475
DOIs	https://doi.org/10.1016/j.memsci.2014.10.018
State	Published - 1 Feb 2015

Keywords

Corrugated membranes
Membrane bioreactor
Membrane fouling
Phase inversion
Polyvinylidene fluoride

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10.1016/j.memsci.2014.10.018

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title = "Simple and effective corrugation of PVDF membranes for enhanced MBR performance",

abstract = "Membrane fouling control in membrane bioreactors (MBRs) can be achieved by improving membrane properties. In this study, corrugated flat sheet polyvinylidenefluoride (PVDF) membranes were fabricated, characterized and tested in a lab-scale MBR for improved filterability and fouling resistance. A simple imprinting step was successfully developed and applied as part of the membrane preparation procedure, via phase inversion, to form corrugations on the membrane surface. The corrugation consisted of valleys-and-hills topography, which increased membrane effective surface area (AE) by ~50%. It also increased the membrane mean pore size (PS) as a result of changes in formation mechanism. Both higher AE and larger PS increased membrane permeability to about 5-6 times compared to the non-corrugated membrane, prepared under similar conditions. Surface corrugations reduced membrane fouling propensity as observed from the flux-stepping test and a lab-scale MBR operation, without affecting permeate quality.",

keywords = "Corrugated membranes, Membrane bioreactor, Membrane fouling, Phase inversion, Polyvinylidene fluoride",

author = "Kharraz, {Jehad A.} and Bilad, {M. R.} and Arafat, {Hassan A.}",

note = "Funding Information: This work was funded by the Cooperative Agreement between the Masdar Institute of Science and Technology, Abu Dhabi, UAE and the Massachusetts Institute of Technology (MIT), Cambridge, MA, USA, Reference no. 02/MI/MI/CP/11/07633/GEN/G/00. Publisher Copyright: {\textcopyright} 2014 Elsevier B.V.",

year = "2015",

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doi = "10.1016/j.memsci.2014.10.018",

language = "British English",

volume = "475",

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T1 - Simple and effective corrugation of PVDF membranes for enhanced MBR performance

AU - Kharraz, Jehad A.

AU - Bilad, M. R.

AU - Arafat, Hassan A.

N1 - Funding Information: This work was funded by the Cooperative Agreement between the Masdar Institute of Science and Technology, Abu Dhabi, UAE and the Massachusetts Institute of Technology (MIT), Cambridge, MA, USA, Reference no. 02/MI/MI/CP/11/07633/GEN/G/00. Publisher Copyright: © 2014 Elsevier B.V.

PY - 2015/2/1

Y1 - 2015/2/1

N2 - Membrane fouling control in membrane bioreactors (MBRs) can be achieved by improving membrane properties. In this study, corrugated flat sheet polyvinylidenefluoride (PVDF) membranes were fabricated, characterized and tested in a lab-scale MBR for improved filterability and fouling resistance. A simple imprinting step was successfully developed and applied as part of the membrane preparation procedure, via phase inversion, to form corrugations on the membrane surface. The corrugation consisted of valleys-and-hills topography, which increased membrane effective surface area (AE) by ~50%. It also increased the membrane mean pore size (PS) as a result of changes in formation mechanism. Both higher AE and larger PS increased membrane permeability to about 5-6 times compared to the non-corrugated membrane, prepared under similar conditions. Surface corrugations reduced membrane fouling propensity as observed from the flux-stepping test and a lab-scale MBR operation, without affecting permeate quality.

AB - Membrane fouling control in membrane bioreactors (MBRs) can be achieved by improving membrane properties. In this study, corrugated flat sheet polyvinylidenefluoride (PVDF) membranes were fabricated, characterized and tested in a lab-scale MBR for improved filterability and fouling resistance. A simple imprinting step was successfully developed and applied as part of the membrane preparation procedure, via phase inversion, to form corrugations on the membrane surface. The corrugation consisted of valleys-and-hills topography, which increased membrane effective surface area (AE) by ~50%. It also increased the membrane mean pore size (PS) as a result of changes in formation mechanism. Both higher AE and larger PS increased membrane permeability to about 5-6 times compared to the non-corrugated membrane, prepared under similar conditions. Surface corrugations reduced membrane fouling propensity as observed from the flux-stepping test and a lab-scale MBR operation, without affecting permeate quality.

KW - Corrugated membranes

KW - Membrane bioreactor

KW - Membrane fouling

KW - Phase inversion

KW - Polyvinylidene fluoride

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U2 - 10.1016/j.memsci.2014.10.018

DO - 10.1016/j.memsci.2014.10.018

M3 - Article

AN - SCOPUS:84949117677

SN - 0376-7388

VL - 475

SP - 91

EP - 100

JO - Journal of Membrane Science

JF - Journal of Membrane Science

ER -

Simple and effective corrugation of PVDF membranes for enhanced MBR performance

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