A CFD study on the effect of membrane permeance on permeate flux enhancement generated by unsteady slip velocity

One of the most noteworthy achievements in reverse osmosis (RO) efficiency is the improvement in membrane permeance. Although current membranes offer higher permeance (and flux) than older RO membranes, increases in permeate flux are limited by concentration polarisation (CP) and fouling. Therefore,...

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Main Authors:	Lim, S. Y., Liang, Y. Y., Weihs, G. A. Fimbres, Wiley, D. E., Fletcher, D. F.
Format:	Article
Language:	English
Published:	Elsevier Ltd 2018
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/21776/ http://umpir.ump.edu.my/id/eprint/21776/ http://umpir.ump.edu.my/id/eprint/21776/ http://umpir.ump.edu.my/id/eprint/21776/1/A%20CFD%20study%20on%20the%20effect%20of%20membrane%20permeance%20on%20permeate-1.pdf

id	ump-21776
recordtype	eprints
spelling	ump-217762019-12-31T01:48:48Z http://umpir.ump.edu.my/id/eprint/21776/ A CFD study on the effect of membrane permeance on permeate flux enhancement generated by unsteady slip velocity Lim, S. Y. Liang, Y. Y. Weihs, G. A. Fimbres Wiley, D. E. Fletcher, D. F. TP Chemical technology One of the most noteworthy achievements in reverse osmosis (RO) efficiency is the improvement in membrane permeance. Although current membranes offer higher permeance (and flux) than older RO membranes, increases in permeate flux are limited by concentration polarisation (CP) and fouling. Therefore, innovation is needed to reduce CP to further increase permeate flux. An unsteady forced slip velocity can disrupt the boundary layer, thus reducing CP. This paper uses Computational Fluid Dynamics (CFD) to analyse the effect of membrane permeance on the resonant frequency for an unsteady forced slip velocity, as well as the resulting mass transfer enhancement. The results show that the resonant frequency of the unsteady forced slip velocity is not affected by the membrane permeance. Although the results show a peak in the mass transfer enhancement factor for permeance values in the range typically used for brackish water, the permeate flux can also be improved for higher membrane permeances (up to 23%) at the expense of a slightly higher pumping energy (5–7%). Elsevier Ltd 2018 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/21776/1/A%20CFD%20study%20on%20the%20effect%20of%20membrane%20permeance%20on%20permeate-1.pdf Lim, S. Y. and Liang, Y. Y. and Weihs, G. A. Fimbres and Wiley, D. E. and Fletcher, D. F. (2018) A CFD study on the effect of membrane permeance on permeate flux enhancement generated by unsteady slip velocity. Journal of Membrane Science, 556. pp. 138-145. ISSN 0376-7388 https://doi.org/10.1016/j.memsci.2018.03.070 doi: 10.1016/j.memsci.2018.03.070
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Lim, S. Y. Liang, Y. Y. Weihs, G. A. Fimbres Wiley, D. E. Fletcher, D. F. A CFD study on the effect of membrane permeance on permeate flux enhancement generated by unsteady slip velocity
description	One of the most noteworthy achievements in reverse osmosis (RO) efficiency is the improvement in membrane permeance. Although current membranes offer higher permeance (and flux) than older RO membranes, increases in permeate flux are limited by concentration polarisation (CP) and fouling. Therefore, innovation is needed to reduce CP to further increase permeate flux. An unsteady forced slip velocity can disrupt the boundary layer, thus reducing CP. This paper uses Computational Fluid Dynamics (CFD) to analyse the effect of membrane permeance on the resonant frequency for an unsteady forced slip velocity, as well as the resulting mass transfer enhancement. The results show that the resonant frequency of the unsteady forced slip velocity is not affected by the membrane permeance. Although the results show a peak in the mass transfer enhancement factor for permeance values in the range typically used for brackish water, the permeate flux can also be improved for higher membrane permeances (up to 23%) at the expense of a slightly higher pumping energy (5–7%).
format	Article
author	Lim, S. Y. Liang, Y. Y. Weihs, G. A. Fimbres Wiley, D. E. Fletcher, D. F.
author_facet	Lim, S. Y. Liang, Y. Y. Weihs, G. A. Fimbres Wiley, D. E. Fletcher, D. F.
author_sort	Lim, S. Y.
title	A CFD study on the effect of membrane permeance on permeate flux enhancement generated by unsteady slip velocity
title_short	A CFD study on the effect of membrane permeance on permeate flux enhancement generated by unsteady slip velocity
title_full	A CFD study on the effect of membrane permeance on permeate flux enhancement generated by unsteady slip velocity
title_fullStr	A CFD study on the effect of membrane permeance on permeate flux enhancement generated by unsteady slip velocity
title_full_unstemmed	A CFD study on the effect of membrane permeance on permeate flux enhancement generated by unsteady slip velocity
title_sort	cfd study on the effect of membrane permeance on permeate flux enhancement generated by unsteady slip velocity
publisher	Elsevier Ltd
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/21776/ http://umpir.ump.edu.my/id/eprint/21776/ http://umpir.ump.edu.my/id/eprint/21776/ http://umpir.ump.edu.my/id/eprint/21776/1/A%20CFD%20study%20on%20the%20effect%20of%20membrane%20permeance%20on%20permeate-1.pdf
first_indexed	2023-09-18T22:32:06Z
last_indexed	2023-09-18T22:32:06Z
_version_	1777416354039595008

A CFD study on the effect of membrane permeance on permeate flux enhancement generated by unsteady slip velocity

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