Numerical simulation studies of the effect of membrane permeance on mass transfer enhancement driven by transient 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,...
Saved in:
Main Author: | |
---|---|
Format: | Thesis |
Language: | English |
Published: |
2020
|
Subjects: | |
Online Access: | http://umpir.ump.edu.my/id/eprint/35244/1/Numerical%20simulation%20studies%20of%20the%20effect%20of%20membrane%20permeance%20on%20mass%20transfer.wm.pdf |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my-ump-ir.35244 |
---|---|
record_format |
uketd_dc |
spelling |
my-ump-ir.352442023-05-24T03:36:44Z Numerical simulation studies of the effect of membrane permeance on mass transfer enhancement driven by transient slip velocity 2020-12 Lim, Soon Yee QD Chemistry TA Engineering (General). Civil engineering (General) 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, In addition, this thesis found that that at any membrane permeance, slip velocity can increase the maximum shear stress ( 2020-12 Thesis http://umpir.ump.edu.my/id/eprint/35244/ http://umpir.ump.edu.my/id/eprint/35244/1/Numerical%20simulation%20studies%20of%20the%20effect%20of%20membrane%20permeance%20on%20mass%20transfer.wm.pdf pdf en public masters Universiti Malaysia Pahang Faculty of Chemical and Process Engineering Technology Liang Yong, Yeow |
institution |
Universiti Malaysia Pahang Al-Sultan Abdullah |
collection |
UMPSA Institutional Repository |
language |
English |
advisor |
Liang Yong, Yeow |
topic |
QD Chemistry QD Chemistry |
spellingShingle |
QD Chemistry QD Chemistry Lim, Soon Yee Numerical simulation studies of the effect of membrane permeance on mass transfer enhancement driven by transient 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, In addition, this thesis found that that at any membrane permeance, slip velocity can increase the maximum shear stress ( |
format |
Thesis |
qualification_level |
Master's degree |
author |
Lim, Soon Yee |
author_facet |
Lim, Soon Yee |
author_sort |
Lim, Soon Yee |
title |
Numerical simulation studies of the effect of membrane permeance on mass transfer enhancement driven by transient slip velocity |
title_short |
Numerical simulation studies of the effect of membrane permeance on mass transfer enhancement driven by transient slip velocity |
title_full |
Numerical simulation studies of the effect of membrane permeance on mass transfer enhancement driven by transient slip velocity |
title_fullStr |
Numerical simulation studies of the effect of membrane permeance on mass transfer enhancement driven by transient slip velocity |
title_full_unstemmed |
Numerical simulation studies of the effect of membrane permeance on mass transfer enhancement driven by transient slip velocity |
title_sort |
numerical simulation studies of the effect of membrane permeance on mass transfer enhancement driven by transient slip velocity |
granting_institution |
Universiti Malaysia Pahang |
granting_department |
Faculty of Chemical and Process Engineering Technology |
publishDate |
2020 |
url |
http://umpir.ump.edu.my/id/eprint/35244/1/Numerical%20simulation%20studies%20of%20the%20effect%20of%20membrane%20permeance%20on%20mass%20transfer.wm.pdf |
_version_ |
1783732223858442240 |