Fabrication of synthetic channel-based reverse osmosis membrane for water desalination
The inherent permeability-selectivity (permselectivity) tradeoff is one of the issues thin-film composite reverse osmosis (TFC-RO) membranes have been facing since their inception in the 1980s. Membrane researchers have tirelessly studied methods to overcome the permselectivity tradeoff. Biomime...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2022
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| Online Access: | https://hdl.handle.net/10356/158262 |
| _version_ | 1811696321295286272 |
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| author | Tham, Terence Ren Hao |
| author2 | Wang Rong |
| author_facet | Wang Rong Tham, Terence Ren Hao |
| author_sort | Tham, Terence Ren Hao |
| collection | NTU |
| description | The inherent permeability-selectivity (permselectivity) tradeoff is one of the issues thin-film composite
reverse osmosis (TFC-RO) membranes have been facing since their inception in the 1980s. Membrane
researchers have tirelessly studied methods to overcome the permselectivity tradeoff. Biomimetic RO
membranes are subsequently studied as they present the potential to overcome the mentioned limitations of
TFC membranes. Such membranes have aquaporin (AQP) proteins embedded into the polyamide (PA)
layer due to the protein’s intrinsic exceptional water transport capabilities whilst maintaining salt rejection
levels. However, as good as it may sound, the AQP-based biomimetic membrane has its limitations with
regard to the cost and workability of the biological channels. To address the limitations of the AQP-based
biomimetic membranes, synthetic nanochannels that possess similar water permeability and salt rejection
capabilities have been proposed as alternatives to AQPs. In this work, we attempted to directly incorporate
the peptide-attached (pR)-pillar(5)arenes (pRPH) synthetic nanochannels into the PA layer to investigate
the effects on water permeability and salt rejection. From the experimental results, a ~32% increase in the
water flux was observed (64.5 L m-2 h
-1
(LMH) to 85.1 LMH). At the same time, the selectivity of the optimized membrane remains relatively the same. Hence, the results show the feasibility of incorporating pRPH nanochannels, to fabricate a thin-film nanocomposite membrane (TFN), as a practical method to overcome the permselectivity tradeoff to a greater extent. |
| first_indexed | 2024-10-01T07:37:30Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/158262 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:37:30Z |
| publishDate | 2022 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1582622022-06-02T04:28:46Z Fabrication of synthetic channel-based reverse osmosis membrane for water desalination Tham, Terence Ren Hao Wang Rong School of Civil and Environmental Engineering RWang@ntu.edu.sg Engineering::Environmental engineering::Water treatment The inherent permeability-selectivity (permselectivity) tradeoff is one of the issues thin-film composite reverse osmosis (TFC-RO) membranes have been facing since their inception in the 1980s. Membrane researchers have tirelessly studied methods to overcome the permselectivity tradeoff. Biomimetic RO membranes are subsequently studied as they present the potential to overcome the mentioned limitations of TFC membranes. Such membranes have aquaporin (AQP) proteins embedded into the polyamide (PA) layer due to the protein’s intrinsic exceptional water transport capabilities whilst maintaining salt rejection levels. However, as good as it may sound, the AQP-based biomimetic membrane has its limitations with regard to the cost and workability of the biological channels. To address the limitations of the AQP-based biomimetic membranes, synthetic nanochannels that possess similar water permeability and salt rejection capabilities have been proposed as alternatives to AQPs. In this work, we attempted to directly incorporate the peptide-attached (pR)-pillar(5)arenes (pRPH) synthetic nanochannels into the PA layer to investigate the effects on water permeability and salt rejection. From the experimental results, a ~32% increase in the water flux was observed (64.5 L m-2 h -1 (LMH) to 85.1 LMH). At the same time, the selectivity of the optimized membrane remains relatively the same. Hence, the results show the feasibility of incorporating pRPH nanochannels, to fabricate a thin-film nanocomposite membrane (TFN), as a practical method to overcome the permselectivity tradeoff to a greater extent. Bachelor of Engineering (Environmental Engineering) 2022-06-02T04:28:46Z 2022-06-02T04:28:46Z 2022 Final Year Project (FYP) Tham, T. R. H. (2022). Fabrication of synthetic channel-based reverse osmosis membrane for water desalination. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/158262 https://hdl.handle.net/10356/158262 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Environmental engineering::Water treatment Tham, Terence Ren Hao Fabrication of synthetic channel-based reverse osmosis membrane for water desalination |
| title | Fabrication of synthetic channel-based reverse osmosis membrane for water desalination |
| title_full | Fabrication of synthetic channel-based reverse osmosis membrane for water desalination |
| title_fullStr | Fabrication of synthetic channel-based reverse osmosis membrane for water desalination |
| title_full_unstemmed | Fabrication of synthetic channel-based reverse osmosis membrane for water desalination |
| title_short | Fabrication of synthetic channel-based reverse osmosis membrane for water desalination |
| title_sort | fabrication of synthetic channel based reverse osmosis membrane for water desalination |
| topic | Engineering::Environmental engineering::Water treatment |
| url | https://hdl.handle.net/10356/158262 |
| work_keys_str_mv | AT thamterencerenhao fabricationofsyntheticchannelbasedreverseosmosismembraneforwaterdesalination |