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).
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Abstract
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 (
| Item Type: | Thesis (Masters) |
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| Additional Information: | Thesis (Master of Science) -- Universiti Malaysia Pahang – 2020, SV: DR LIANG YONG YEOW, NO. CD: 12861 |
| Uncontrolled Keywords: | Numerical simulation studies, membrane permeance, mass transfer enhancement, transient slip velocity |
| Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) |
| Faculty/Division: | Institute of Postgraduate Studies Faculty of Chemical and Process Engineering Technology |
| Depositing User: | Mr. Nik Ahmad Nasyrun Nik Abd Malik |
| Date Deposited: | 14 Oct 2022 02:09 |
| Last Modified: | 24 May 2023 03:36 |
| URI: | http://umpir.ump.edu.my/id/eprint/35244 |
| Download Statistic: | View Download Statistics |
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