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Unsteady slip velocity to improve mass transfer in spiral wound reverse osmosis membrane (SWM) systems

An unsteady forced slip velocity has an important effect on the flow conditions adjacent to the membrane interface, which can help control concentration polarisation (CP) and fouling. This study explores the effect of non-sinusoidal slip velocity waveforms on mass transfer and shear stress in membra...

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Main Author: Liang, Yong Yeow
Format: Research Report
Language:English
Published: 2019
Subjects:
TP Chemical technology
Online Access:http://umpir.ump.edu.my/id/eprint/36353/1/Unsteady%20slip%20velocity%20to%20improve%20mass%20transfer%20in%20spiral%20wound%20reverse%20osmosis%20membrane%20%28SWM%29%20systems.wm.pdf
http://umpir.ump.edu.my/id/eprint/36353/
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spelling my.ump.umpir.363532023-02-17T08:21:54Z http://umpir.ump.edu.my/id/eprint/36353/ Unsteady slip velocity to improve mass transfer in spiral wound reverse osmosis membrane (SWM) systems Liang, Yong Yeow TP Chemical technology An unsteady forced slip velocity has an important effect on the flow conditions adjacent to the membrane interface, which can help control concentration polarisation (CP) and fouling. This study explores the effect of non-sinusoidal slip velocity waveforms on mass transfer and shear stress in membrane channels. The main finding of this is that a non-sinusoidal waveform with a sudden decrease in slip velocity for systems without vortex shedding, can significantly increase maximum shear stress (>20%). The second objective of this work is to compare oscillating flow and slip velocity mass transfer enhancement in spacer-filled membrane channels. One of this finding is that the mechanism by which the flow perturbations are generated is not as important as the perturbation frequency, in terms of increasing wall shear and permeate flux. The third objective of this work is to investigate the effect of SWM feed spacer geometry on mass transfer enhancement driven by forced transient slip velocity. One of the finding of this is that the resonant frequency is significantly affected by the interaction of the shear layer with successive downstream spacers, hence affecting the degree of mass transfer effectiveness. 2019 Research Report NonPeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/36353/1/Unsteady%20slip%20velocity%20to%20improve%20mass%20transfer%20in%20spiral%20wound%20reverse%20osmosis%20membrane%20%28SWM%29%20systems.wm.pdf Liang, Yong Yeow (2019) Unsteady slip velocity to improve mass transfer in spiral wound reverse osmosis membrane (SWM) systems. , [Research Report: Research Report] (Unpublished)
institution Universiti Malaysia Pahang Al-Sultan Abdullah
building UMPSA Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang Al-Sultan Abdullah
content_source UMPSA Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Liang, Yong Yeow
Unsteady slip velocity to improve mass transfer in spiral wound reverse osmosis membrane (SWM) systems
description An unsteady forced slip velocity has an important effect on the flow conditions adjacent to the membrane interface, which can help control concentration polarisation (CP) and fouling. This study explores the effect of non-sinusoidal slip velocity waveforms on mass transfer and shear stress in membrane channels. The main finding of this is that a non-sinusoidal waveform with a sudden decrease in slip velocity for systems without vortex shedding, can significantly increase maximum shear stress (>20%). The second objective of this work is to compare oscillating flow and slip velocity mass transfer enhancement in spacer-filled membrane channels. One of this finding is that the mechanism by which the flow perturbations are generated is not as important as the perturbation frequency, in terms of increasing wall shear and permeate flux. The third objective of this work is to investigate the effect of SWM feed spacer geometry on mass transfer enhancement driven by forced transient slip velocity. One of the finding of this is that the resonant frequency is significantly affected by the interaction of the shear layer with successive downstream spacers, hence affecting the degree of mass transfer effectiveness.
format Research Report
author Liang, Yong Yeow
author_facet Liang, Yong Yeow
author_sort Liang, Yong Yeow
title Unsteady slip velocity to improve mass transfer in spiral wound reverse osmosis membrane (SWM) systems
title_short Unsteady slip velocity to improve mass transfer in spiral wound reverse osmosis membrane (SWM) systems
title_full Unsteady slip velocity to improve mass transfer in spiral wound reverse osmosis membrane (SWM) systems
title_fullStr Unsteady slip velocity to improve mass transfer in spiral wound reverse osmosis membrane (SWM) systems
title_full_unstemmed Unsteady slip velocity to improve mass transfer in spiral wound reverse osmosis membrane (SWM) systems
title_sort unsteady slip velocity to improve mass transfer in spiral wound reverse osmosis membrane (swm) systems
publishDate 2019
url http://umpir.ump.edu.my/id/eprint/36353/1/Unsteady%20slip%20velocity%20to%20improve%20mass%20transfer%20in%20spiral%20wound%20reverse%20osmosis%20membrane%20%28SWM%29%20systems.wm.pdf
http://umpir.ump.edu.my/id/eprint/36353/
_version_ 1822923170123874304
score 13.244368

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