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,...
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| Format: | Thesis |
| Language: | English |
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2020
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| 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 |
| _version_ | 1825814554099056640 |
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| author | Lim, Soon Yee |
| author_facet | Lim, Soon Yee |
| author_sort | Lim, Soon Yee |
| collection | UMP |
| 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 ( |
| first_indexed | 2024-03-06T13:00:18Z |
| format | Thesis |
| id | UMPir35244 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T13:00:18Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | UMPir352442023-05-24T03:36:44Z http://umpir.ump.edu.my/id/eprint/35244/ Numerical simulation studies of the effect of membrane permeance on mass transfer enhancement driven by transient slip velocity 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 NonPeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/35244/1/Numerical%20simulation%20studies%20of%20the%20effect%20of%20membrane%20permeance%20on%20mass%20transfer.wm.pdf Lim, Soon Yee (2020) Numerical simulation studies of the effect of membrane permeance on mass transfer enhancement driven by transient slip velocity. Masters thesis, Universiti Malaysia Pahang (Contributors, Thesis advisor: Liang Yong, Yeow). |
| spellingShingle | QD Chemistry TA Engineering (General). Civil engineering (General) Lim, Soon Yee Numerical simulation studies of the effect of membrane permeance on mass transfer enhancement driven by transient slip velocity |
| title | 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_short | 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 |
| topic | QD Chemistry TA Engineering (General). Civil engineering (General) |
| url | http://umpir.ump.edu.my/id/eprint/35244/1/Numerical%20simulation%20studies%20of%20the%20effect%20of%20membrane%20permeance%20on%20mass%20transfer.wm.pdf |
| work_keys_str_mv | AT limsoonyee numericalsimulationstudiesoftheeffectofmembranepermeanceonmasstransferenhancementdrivenbytransientslipvelocity |