MARC details
| 000 -LEADER |
|---|
| fixed length control field |
05069ntm a2200337 i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
|---|
| control field |
MY-KuUP |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
|---|
| control field |
20261008113622.0 |
| 006 - FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS |
|---|
| fixed length control field |
t||||fr|||| 000 0 |
| 007 - PHYSICAL DESCRIPTION FIXED FIELD--GENERAL INFORMATION |
|---|
| fixed length control field |
ta |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
261008t20262026my a|||fr|||| 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
|---|
| International Standard Book Number |
THE0010836 (Local) |
| Qualifying information |
Hardback |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
UMPSA |
| Language of cataloging |
eng |
| Transcribing agency |
UMPSA |
| Description conventions |
rda |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
|---|
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
FTKKP .H36 2026 r Thesis |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Hamza Ennaji Omran Almansouri, |
| Relator term |
author. |
| 245 10 - TITLE STATEMENT |
|---|
| Title |
Development of carbon-based nanomaterials-enhanced thin-film composite membranes for forward osmosis seawater desalination / |
| Statement of responsibility, etc. |
Hamza Ennaji Omran Almansouri |
| 264 #1 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
|---|
| Place of production, publication, distribution, manufacture |
Kuantan, Pahang : |
| Name of producer, publisher, distributor, manufacturer |
UMPSA, |
| Date of production, publication, distribution, manufacture, or copyright notice |
2026 |
| 264 #4 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
|---|
| Date of production, publication, distribution, manufacture, or copyright notice |
© 2026 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
xviii, 244 pages : |
| Other physical details |
illustration ; |
| Dimensions |
30 cm.+ |
| Accompanying material |
1 CD-ROM |
| 336 ## - CONTENT TYPE |
|---|
| Source |
rdacontent |
| Content type term |
text |
| 337 ## - MEDIA TYPE |
|---|
| Source |
rdamedia |
| Media type term |
unmediated |
| 338 ## - CARRIER TYPE |
|---|
| Source |
rdacarrier |
| Carrier type term |
volume |
| 347 ## - DIGITAL FILE CHARACTERISTICS |
|---|
| Source |
rda |
| File type |
text file |
| Encoding format |
PDF |
| 500 ## - GENERAL NOTE |
|---|
| General note |
Faculty of Chemical and Process Engineering Technology |
| 502 ## - DISSERTATION NOTE |
|---|
| Dissertation note |
Thesis (Doctor of Philosophy) -- Universiti Malaysia Pahang Al Sultan Abdullah - 2026 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
|---|
| Bibliography, etc. note |
Include bibliographical reference |
| 520 3# - SUMMARY, ETC. |
|---|
| Summary, etc. |
This study investigates the development of carbon-based nanomaterial-enhanced thinfilm composite (TFC) membranes for efficient forward osmosis (FO) seawater desalination. Two nanomaterials with different dimensionalities were investigated: onedimensional (1-D) carboxyl-functionalized multiwalled carbon nanotubes (COOHMWCNTs) and two-dimensional (2-D) graphene oxide (GO) nanosheets. The two nanomaterials were strategically incorporated into the polyethersulfone (PES) support layer, the polyamide (PA) selective layer, and both layers to evaluate their effects on FO performance and antifouling properties. For the support layer, COOH-MWCNTs and GO were incorporated into PES substrates at loadings of 0.1 0.75 wt.%, whereas for the PA layer, they were introduced during interfacial polymerization at loadings of 100 850 ppm. The loadings were systematically optimized for each layer, and the optimum loadings were subsequently employed for dual-layer modification to investigate the synergistic effects. The control membrane (TFC-0) exhibited low water flux (2.86 LMH), poor selectivity (9.34 g/L), high flux decline (55.18%), and low flux recovery (72.3%). Incorporating COOH-MWCNTs into the PES support at the optimum loading of 0.5 wt.% (TFC-MW3) improved water flux (7.48 LMH), selectivity (8.8 g/L), flux decline (37.81%), and flux recovery (91.92%). The GO-modified PES support at 0.1 wt.% (TFCGO1) achieved moderate flux (5.12 LMH) but higher selectivity (4.95 g/L), lower flux decline (35.67%), and higher flux recovery (97%). MWCNTs enhanced water passage through 1-D nanochannels, while GO nanosheets provided 2-D capillary channels that enhanced solute selectivity. Both modifications also strengthened the PES substrates, with MWCNTs providing higher tensile strength owing to the strong graphitic bonds of carbon nanotubes. COOH-MWCNTs incorporated into the PA layer at 350 ppm (TFNMW350) yielded a water flux of 5.86 LMH, selectivity of 4.36 g/L, reduced flux decline (42.76%), and high flux recovery (96.68%). GO nanosheets at 850 ppm (TFN-GO850) achieved higher flux (7.79 LMH), stronger selectivity (2.05 g/L), slightly higher flux decline (51%), and excellent flux recovery (99.47%). Accordingly, PA-layer modification achieved greater selectivity improvement than support-layer modification, highlighting the role of direct nanomaterial incorporation into the selective layer. Duallayer modification further improved performance, with the GO-modified both-layer membrane (TFN-BL-GO) achieving the highest water flux (8.67 LMH) and the best selectivity (1.75 g/L) across all membrane configurations, while exhibiting a flux decline of 47% and a flux recovery of 97%. The COOH-MWCNTs-modified both-layer membrane (TFN-BL-MW) achieved a water flux of 7.27 LMH, higher than the TFNMW350 membrane but lower than the TFC-MW3, with improved selectivity (2.63 g/L), flux decline of 48%, and a flux recovery of 100%. Both-layer modification integrated the advantages of the support and PA layers, delivering balanced improvements in flux, selectivity, and fouling reversibility. Under real seawater conditions, PA-layer-modified membranes exhibited more stable performance than support-layer-modified membranes, while dual-layer-modified membranes achieved the highest and most stable water fluxes, with TFN-BL-MW and TFN-BL-GO retaining 91.3% and 83.6% of their initial flux, respectively. Notably, trends observed under real seawater conditions differed from laboratory-controlled foulant tests, underscoring the importance of validation using real seawater. Overall, this study demonstrates that carbon-based nanomaterials can significantly enhance FO performance, with nanomaterial dimensionality (1-D vs. 2-D) and incorporation strategy playing critical roles. |
| 610 20 - SUBJECT ADDED ENTRY--CORPORATE NAME |
|---|
| Corporate name or jurisdiction name as entry element |
Faculty of Chemical and Process Engineering Technology |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Universities and colleges |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Theses |
| General subdivision |
Dissertations |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Thesis |