MARC details
| 000 -LEADER |
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| fixed length control field |
03158nam a2200277 a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
vtls000098241 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
KUKTEM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251117113335.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
161202t2015 at a f 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0004173(Local) |
| 039 #9 - LEVEL OF BIBLIOGRAPHIC CONTROL AND CODING DETAIL [OBSOLETE] |
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| Level of rules in bibliographic description |
201905141721 |
| Level of effort used to assign nonsubject heading access points |
farhana |
| Level of effort used to assign subject headings |
201710090900 |
| Level of effort used to assign classification |
aishah |
| -- |
201612021119 |
| -- |
huda |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
UMP |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
TP156.O7 L53 2015 r Thesis |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Liang, Yong Yeow |
| 245 1# - TITLE STATEMENT |
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| Title |
Concentration polarisation minimisation in membrane channels through electro-osmotic mixing / |
| Statement of responsibility, etc. |
Liang Yong Yeow |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
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| Place of publication, distribution, etc. |
Australia : |
| Name of publisher, distributor, etc. |
University of New South Wales, |
| Date of publication, distribution, etc. |
2015 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
xv, 162 p. : |
| Other physical details |
ill. (some col.) ; |
| Dimensions |
30 cm + |
| Accompanying material |
1 CD-ROM |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Thesis (Doctor of Chemical Engineering) -- Universiti of New South Wales - 2015 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Bibliography : p. 153-161 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Reverse osmosis (RO) promises to play an increasingly crucial role in watersupply, especially via desalination. One of the major problems faced by RO technologyis the decline in membrane performance due to concentration polarisation (CP) andfouling. CP increases the osmotic pressure gradient across the membrane, hencereducing the net driving pressure gradient. Moreover, CP increases the probability of fouling.An electro-osmosis technique is proposed in this thesis which has the potentialto reduce CP because it induces the movement of fluid in the vicinity of membrane, thus improving mixing within the boundary layer and enhancing mass transfer.Computational Fluid Dynamics (CFD) is used to simulate steady and unsteady electroosmotic flow (EOF) in 2D unobstructed and obstructed channels.First, a mathematical simplification of EOF is developed that reduces therequired computational load while retaining the model’s accuracy and physical meaning. It is shown that EOF can be mimicked using a slip velocity. The results from CFD are found to be in good agreement both with published data and with morerigorous simulation approaches.For steady EOF in unobstructed channels, the spatial variation in slip velocity is found to be the driver for mass transfer enhancement. For uniform-unsteady EOF in unobstructed channels, a sinusoidal time-varying electro-osmotic slip velocity has negligible effect on the time-averaged hydrodynamics and mass transfer, because the effect is nullified within the time oscillation period. Nevertheless, there are still benefits for using unsteady EOF for fouling reduction/prevention, as increases in slip velocity ii frequency and amplitude increase the maximum wall stress which is a proxy for fouling reduction.For unsteady EOF in spacer-filled channels, the simulation results show that anoscillating slip velocity has the potential to induce vortex shedding. This occurs when a resonant slip velocity frequency is used for Reynolds numbers near the transition from steady to unsteady flow. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Reverse osmosis |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Membranes (Technology) |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Water |
| General subdivision |
Purification |
| -- |
Reverse osmosis process |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="http://ecollib.ump.edu.my/26003/">http://ecollib.ump.edu.my/26003/</a> |
| Public note |
Library access only |