A biomimetic antimicrobial surface for membrane fouling control in reverse osmosis for seawater desalination
Membrane fouling occurs in all membrane processes. Surface modifications have gained popularity for enhancing membrane antifouling capability via introducing a hydrophilic component or reducing membrane surface roughness. In this work, we proposed to develop a green antimicrobial lysozyme nanofilm o...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/156943 |
| _version_ | 1811694022302892032 |
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| author | Tian, Miao Xu, Huijuan Yao, Lei Wang, Rong |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Tian, Miao Xu, Huijuan Yao, Lei Wang, Rong |
| author_sort | Tian, Miao |
| collection | NTU |
| description | Membrane fouling occurs in all membrane processes. Surface modifications have gained popularity for enhancing membrane antifouling capability via introducing a hydrophilic component or reducing membrane surface roughness. In this work, we proposed to develop a green antimicrobial lysozyme nanofilm on the polyamide membrane surface with remarkable antibacterial and antifouling properties to effectively reduce membrane fouling. The nanofilm is rooted in the molecular assembly of a protein which is an extraction of food and natural products. The nanofilm exhibits the combination of various functions including antimicrobial, antifouling and antibiofilm. This protein-based nanofilm is robustly transferred and self-adhered on the membrane surface by a simple one-step aqueous coating. The modified RO membrane exhibited good performance in bacterial reduction of ~50% in comparison to the control membrane and experienced almost zero loss in water flux and salt rejection under SWRO testing condition. The membrane is further evaluated with real seawater for 14 days and the modified membrane showed its superiority in flux and fouling control which were verified by the confocal laser scanning microscopy (CLSM) and quantified by inductively coupled plasma optical emission spectrometer (ICP-OES). This work demonstrates that the protein-based biomaterials offer a safe and environmentally friendly way of antimicrobials, which can reduce membrane fouling significantly in membrane filtration. |
| first_indexed | 2024-10-01T07:00:58Z |
| format | Journal Article |
| id | ntu-10356/156943 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:00:58Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1569432022-04-30T20:11:20Z A biomimetic antimicrobial surface for membrane fouling control in reverse osmosis for seawater desalination Tian, Miao Xu, Huijuan Yao, Lei Wang, Rong School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre Engineering::Civil engineering Reverse Osmosis Antimicrobial Membrane fouling occurs in all membrane processes. Surface modifications have gained popularity for enhancing membrane antifouling capability via introducing a hydrophilic component or reducing membrane surface roughness. In this work, we proposed to develop a green antimicrobial lysozyme nanofilm on the polyamide membrane surface with remarkable antibacterial and antifouling properties to effectively reduce membrane fouling. The nanofilm is rooted in the molecular assembly of a protein which is an extraction of food and natural products. The nanofilm exhibits the combination of various functions including antimicrobial, antifouling and antibiofilm. This protein-based nanofilm is robustly transferred and self-adhered on the membrane surface by a simple one-step aqueous coating. The modified RO membrane exhibited good performance in bacterial reduction of ~50% in comparison to the control membrane and experienced almost zero loss in water flux and salt rejection under SWRO testing condition. The membrane is further evaluated with real seawater for 14 days and the modified membrane showed its superiority in flux and fouling control which were verified by the confocal laser scanning microscopy (CLSM) and quantified by inductively coupled plasma optical emission spectrometer (ICP-OES). This work demonstrates that the protein-based biomaterials offer a safe and environmentally friendly way of antimicrobials, which can reduce membrane fouling significantly in membrane filtration. Economic Development Board (EDB) Submitted/Accepted version We acknowledge funding support from Northwestern Polytechnical University (China), Hubei Provincial Department of Education (B2020052) and the Singapore Economic Development Board to the Singapore Membrane Technology Centre (SMTC), Nanyang Environment and Water Research Institute, Nanyang Technological University. 2022-04-27T08:10:47Z 2022-04-27T08:10:47Z 2021 Journal Article Tian, M., Xu, H., Yao, L. & Wang, R. (2021). A biomimetic antimicrobial surface for membrane fouling control in reverse osmosis for seawater desalination. Desalination, 503, 114954-. https://dx.doi.org/10.1016/j.desal.2021.114954 0011-9164 https://hdl.handle.net/10356/156943 10.1016/j.desal.2021.114954 2-s2.0-85099682681 503 114954 en Desalination © 2021 Elsevier B.V. All rights reserved. This paper was published in Desalination and is made available with permission of Elsevier B.V. application/pdf |
| spellingShingle | Engineering::Civil engineering Reverse Osmosis Antimicrobial Tian, Miao Xu, Huijuan Yao, Lei Wang, Rong A biomimetic antimicrobial surface for membrane fouling control in reverse osmosis for seawater desalination |
| title | A biomimetic antimicrobial surface for membrane fouling control in reverse osmosis for seawater desalination |
| title_full | A biomimetic antimicrobial surface for membrane fouling control in reverse osmosis for seawater desalination |
| title_fullStr | A biomimetic antimicrobial surface for membrane fouling control in reverse osmosis for seawater desalination |
| title_full_unstemmed | A biomimetic antimicrobial surface for membrane fouling control in reverse osmosis for seawater desalination |
| title_short | A biomimetic antimicrobial surface for membrane fouling control in reverse osmosis for seawater desalination |
| title_sort | biomimetic antimicrobial surface for membrane fouling control in reverse osmosis for seawater desalination |
| topic | Engineering::Civil engineering Reverse Osmosis Antimicrobial |
| url | https://hdl.handle.net/10356/156943 |
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