Flow-field mitigation of membrane fouling (FMMF) via manipulation of the convective flow in cross-flow membrane applications

Membrane fouling by particulates is largely driven by permeate drag that causes the foulants to move towards the membrane. Cross-flow is used to induce shear at the membrane surface to mitigate the fouling. This study describes the flow-field mitigation of membrane fouling (FMMF) technique that redu...

Full description

Saved in:
Bibliographic Details
Main Authors: Zamani, Farhad, Tanudjaja, Henry Jonathan, Akhondi, Ebrahim, Krantz, William Bill, Fane, Anthony Gordon, Chew, Jia Wei
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2017
Subjects:
Online Access:https://hdl.handle.net/10356/85616
http://hdl.handle.net/10220/43785
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-85616
record_format dspace
spelling sg-ntu-dr.10356-856162020-03-07T11:35:27Z Flow-field mitigation of membrane fouling (FMMF) via manipulation of the convective flow in cross-flow membrane applications Zamani, Farhad Tanudjaja, Henry Jonathan Akhondi, Ebrahim Krantz, William Bill Fane, Anthony Gordon Chew, Jia Wei School of Chemical and Biomedical Engineering Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre Microfiltration Cross-flow membrane applications Membrane fouling by particulates is largely driven by permeate drag that causes the foulants to move towards the membrane. Cross-flow is used to induce shear at the membrane surface to mitigate the fouling. This study describes the flow-field mitigation of membrane fouling (FMMF) technique that reduces the fouling based on a judicious manipulation of the flow-field by inclining the channel walls to counter the permeate drag experienced by the foulants. The key mechanism is the additional transverse (i.e., orthogonal to the fluid flow direction) fluid vector caused by a small inclination of the channel walls (on the order of one to a few degrees). Both simulation and experiments confirm the efficacy of FMMF in mitigating fouling at a reduced energy requirement compared with the conventional channels with parallel walls. Simulations over a range of permeate fluxes indicated that a slight inclination angle of 1.15° can give a deposition factor less than that in the conventional channel with parallel walls even at twice the permeate flux. Direct observation through the membrane (DOTM) experiments for fouling using two particle diameters over a range of power inputs showed that the critical fluxes were significantly increased in the FMMF module compared with the conventional module. This study provides a proof-of-concept of the principle underlying FMMF and underscores the potential benefits. The direction for further development and scale-up is suggested. MOE (Min. of Education, S’pore) EDB (Economic Devt. Board, S’pore) 2017-09-22T04:52:41Z 2019-12-06T16:07:11Z 2017-09-22T04:52:41Z 2019-12-06T16:07:11Z 2016 Journal Article Zamani, F., Tanudjaja, H. J., Akhondi, E., Krantz, W. B., Fane, A. G., & Chew, J. W. (2017). Flow-field mitigation of membrane fouling (FMMF) via manipulation of the convective flow in cross-flow membrane applications. Journal of Membrane Science, 526, 377-386. 0376-7388 https://hdl.handle.net/10356/85616 http://hdl.handle.net/10220/43785 10.1016/j.memsci.2016.12.055 en Journal of Membrane Science © 2016 Elsevier
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Microfiltration
Cross-flow membrane applications
spellingShingle Microfiltration
Cross-flow membrane applications
Zamani, Farhad
Tanudjaja, Henry Jonathan
Akhondi, Ebrahim
Krantz, William Bill
Fane, Anthony Gordon
Chew, Jia Wei
Flow-field mitigation of membrane fouling (FMMF) via manipulation of the convective flow in cross-flow membrane applications
description Membrane fouling by particulates is largely driven by permeate drag that causes the foulants to move towards the membrane. Cross-flow is used to induce shear at the membrane surface to mitigate the fouling. This study describes the flow-field mitigation of membrane fouling (FMMF) technique that reduces the fouling based on a judicious manipulation of the flow-field by inclining the channel walls to counter the permeate drag experienced by the foulants. The key mechanism is the additional transverse (i.e., orthogonal to the fluid flow direction) fluid vector caused by a small inclination of the channel walls (on the order of one to a few degrees). Both simulation and experiments confirm the efficacy of FMMF in mitigating fouling at a reduced energy requirement compared with the conventional channels with parallel walls. Simulations over a range of permeate fluxes indicated that a slight inclination angle of 1.15° can give a deposition factor less than that in the conventional channel with parallel walls even at twice the permeate flux. Direct observation through the membrane (DOTM) experiments for fouling using two particle diameters over a range of power inputs showed that the critical fluxes were significantly increased in the FMMF module compared with the conventional module. This study provides a proof-of-concept of the principle underlying FMMF and underscores the potential benefits. The direction for further development and scale-up is suggested.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Zamani, Farhad
Tanudjaja, Henry Jonathan
Akhondi, Ebrahim
Krantz, William Bill
Fane, Anthony Gordon
Chew, Jia Wei
format Article
author Zamani, Farhad
Tanudjaja, Henry Jonathan
Akhondi, Ebrahim
Krantz, William Bill
Fane, Anthony Gordon
Chew, Jia Wei
author_sort Zamani, Farhad
title Flow-field mitigation of membrane fouling (FMMF) via manipulation of the convective flow in cross-flow membrane applications
title_short Flow-field mitigation of membrane fouling (FMMF) via manipulation of the convective flow in cross-flow membrane applications
title_full Flow-field mitigation of membrane fouling (FMMF) via manipulation of the convective flow in cross-flow membrane applications
title_fullStr Flow-field mitigation of membrane fouling (FMMF) via manipulation of the convective flow in cross-flow membrane applications
title_full_unstemmed Flow-field mitigation of membrane fouling (FMMF) via manipulation of the convective flow in cross-flow membrane applications
title_sort flow-field mitigation of membrane fouling (fmmf) via manipulation of the convective flow in cross-flow membrane applications
publishDate 2017
url https://hdl.handle.net/10356/85616
http://hdl.handle.net/10220/43785
_version_ 1681042516896382976