Assistance of inertial microfluidics in membrane-based microfiltration
Backwashing has been widely used in microfiltration to clear sludge cake formed on membrane surface. However, it was found to perform much below expectation if only few pores were clogged. For these conditions, other assistant methods preventing the clogging are needed. In this study, we propose a h...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/170256 |
| _version_ | 1824456738325135360 |
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| author | Zhang, Boran Zhao, Wenhan Wang, Ziyu Zhao, Qianbin Wu, Wenshuai |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Zhang, Boran Zhao, Wenhan Wang, Ziyu Zhao, Qianbin Wu, Wenshuai |
| author_sort | Zhang, Boran |
| collection | NTU |
| description | Backwashing has been widely used in microfiltration to clear sludge cake formed on membrane surface. However, it was found to perform much below expectation if only few pores were clogged. For these conditions, other assistant methods preventing the clogging are needed. In this study, we propose a hydraulic assistance of secondary microfluidic vortex on concentrating extremely low dilution sample (0.1 CFU/mL). The secondary vortex can help to trap microparticles suspended, and also help to flush the settled ones. The optimal geometry of spiral channel was identified and validated in experiment. The results were remarkably improved, where a stable recovery rate around 95 % was obtained with a high concentration ratio of 100 (from 0.1 CFU/mL to 10 CFU/mL) within 1 h. To the state of art, there has been no application of inertial microfluidic techniques utilized on membrane-based microfiltration. For cellular microparticles, they may perform differently on in-pore deformation due to their viscoelastic physical characteristics. The applications on different bio-targets will be investigated separately in the further studies. The proposed method is promising in application of water quality assessment after chlorination in water treatment. |
| first_indexed | 2025-02-19T03:58:52Z |
| format | Journal Article |
| id | ntu-10356/170256 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:58:52Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1702562023-09-05T02:12:59Z Assistance of inertial microfluidics in membrane-based microfiltration Zhang, Boran Zhao, Wenhan Wang, Ziyu Zhao, Qianbin Wu, Wenshuai School of Electrical and Electronic Engineering Engineering::Environmental engineering Engineering::Electrical and electronic engineering Microfluidic Filter Secondary Vortex Backwashing has been widely used in microfiltration to clear sludge cake formed on membrane surface. However, it was found to perform much below expectation if only few pores were clogged. For these conditions, other assistant methods preventing the clogging are needed. In this study, we propose a hydraulic assistance of secondary microfluidic vortex on concentrating extremely low dilution sample (0.1 CFU/mL). The secondary vortex can help to trap microparticles suspended, and also help to flush the settled ones. The optimal geometry of spiral channel was identified and validated in experiment. The results were remarkably improved, where a stable recovery rate around 95 % was obtained with a high concentration ratio of 100 (from 0.1 CFU/mL to 10 CFU/mL) within 1 h. To the state of art, there has been no application of inertial microfluidic techniques utilized on membrane-based microfiltration. For cellular microparticles, they may perform differently on in-pore deformation due to their viscoelastic physical characteristics. The applications on different bio-targets will be investigated separately in the further studies. The proposed method is promising in application of water quality assessment after chlorination in water treatment. This research work is supported by the National Natural Science Foundation of China (Grant No. 61827827). 2023-09-05T02:12:59Z 2023-09-05T02:12:59Z 2023 Journal Article Zhang, B., Zhao, W., Wang, Z., Zhao, Q. & Wu, W. (2023). Assistance of inertial microfluidics in membrane-based microfiltration. Journal of Water Process Engineering, 53, 103762-. https://dx.doi.org/10.1016/j.jwpe.2023.103762 2214-7144 https://hdl.handle.net/10356/170256 10.1016/j.jwpe.2023.103762 2-s2.0-85153951955 53 103762 en Journal of Water Process Engineering © 2023 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Environmental engineering Engineering::Electrical and electronic engineering Microfluidic Filter Secondary Vortex Zhang, Boran Zhao, Wenhan Wang, Ziyu Zhao, Qianbin Wu, Wenshuai Assistance of inertial microfluidics in membrane-based microfiltration |
| title | Assistance of inertial microfluidics in membrane-based microfiltration |
| title_full | Assistance of inertial microfluidics in membrane-based microfiltration |
| title_fullStr | Assistance of inertial microfluidics in membrane-based microfiltration |
| title_full_unstemmed | Assistance of inertial microfluidics in membrane-based microfiltration |
| title_short | Assistance of inertial microfluidics in membrane-based microfiltration |
| title_sort | assistance of inertial microfluidics in membrane based microfiltration |
| topic | Engineering::Environmental engineering Engineering::Electrical and electronic engineering Microfluidic Filter Secondary Vortex |
| url | https://hdl.handle.net/10356/170256 |
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