Electrodialysis membrane with concentration polarization – A review
Electrodialysis (ED) is more robust than reverse osmosis in terms of scaling, purity, and control, but its efficiency is dependent on concentration polarization. Concentration polarization is not only inherent in ED, but also commonly found in microfiltration, ultrafiltration, nanofiltration, revers...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English English |
| Published: |
Elsevier Ltd
2024
|
| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/39943/1/1-s2.0-S0263876223006962-main.pdf http://umpir.ump.edu.my/id/eprint/39943/7/Electrodialysis%20membrane%20with%20concentration%20polarization.pdf |
| _version_ | 1796996155888893952 |
|---|---|
| author | Al-Amshawee, Sajjad Mohd Yusri, Mohd Yunus |
| author_facet | Al-Amshawee, Sajjad Mohd Yusri, Mohd Yunus |
| author_sort | Al-Amshawee, Sajjad |
| collection | UMP |
| description | Electrodialysis (ED) is more robust than reverse osmosis in terms of scaling, purity, and control, but its efficiency is dependent on concentration polarization. Concentration polarization is not only inherent in ED, but also commonly found in microfiltration, ultrafiltration, nanofiltration, reverse osmosis, and fuel cells with ion exchange membranes (IEMs). The current meta-synthesis review aims to identify the best approach for reducing concentration polarization, increasing velocity, or maximizing spacer design. Concentration polarization can significantly impact membrane capability and reduce overall performance. To reduce concentration polarization, innovative geometries and configurations of membrane spacers are needed. Carefully designed spacers that increase channel turbulence can help mitigate concentration polarization effects. However, advanced spacers still have negative consequences, such as the shadow effect, which reduces the ion exchange area and increases permeation resistance. Increasing the flowrate can improve membrane performance, maximize recovery/permeate rate, and reduce the limitations of spacer design. However, increasing the flowrate can have drawbacks in certain membrane applications. For example, a higher Reynolds number may improve spacer performance with a higher Sherwood number but at the cost of a greater power number. This review found that the extent of concentration polarization formation is heavily influenced by both spacer design and solution velocity. Convective motions affect mixing, making the concentration domain within the cell highly dependent on spacer design and flow velocity. |
| first_indexed | 2024-03-06T13:12:48Z |
| format | Article |
| id | UMPir39943 |
| institution | Universiti Malaysia Pahang |
| language | English English |
| last_indexed | 2024-03-06T13:12:48Z |
| publishDate | 2024 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | UMPir399432024-01-11T07:34:49Z http://umpir.ump.edu.my/id/eprint/39943/ Electrodialysis membrane with concentration polarization – A review Al-Amshawee, Sajjad Mohd Yusri, Mohd Yunus TP Chemical technology Electrodialysis (ED) is more robust than reverse osmosis in terms of scaling, purity, and control, but its efficiency is dependent on concentration polarization. Concentration polarization is not only inherent in ED, but also commonly found in microfiltration, ultrafiltration, nanofiltration, reverse osmosis, and fuel cells with ion exchange membranes (IEMs). The current meta-synthesis review aims to identify the best approach for reducing concentration polarization, increasing velocity, or maximizing spacer design. Concentration polarization can significantly impact membrane capability and reduce overall performance. To reduce concentration polarization, innovative geometries and configurations of membrane spacers are needed. Carefully designed spacers that increase channel turbulence can help mitigate concentration polarization effects. However, advanced spacers still have negative consequences, such as the shadow effect, which reduces the ion exchange area and increases permeation resistance. Increasing the flowrate can improve membrane performance, maximize recovery/permeate rate, and reduce the limitations of spacer design. However, increasing the flowrate can have drawbacks in certain membrane applications. For example, a higher Reynolds number may improve spacer performance with a higher Sherwood number but at the cost of a greater power number. This review found that the extent of concentration polarization formation is heavily influenced by both spacer design and solution velocity. Convective motions affect mixing, making the concentration domain within the cell highly dependent on spacer design and flow velocity. Elsevier Ltd 2024 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/39943/1/1-s2.0-S0263876223006962-main.pdf pdf en http://umpir.ump.edu.my/id/eprint/39943/7/Electrodialysis%20membrane%20with%20concentration%20polarization.pdf Al-Amshawee, Sajjad and Mohd Yusri, Mohd Yunus (2024) Electrodialysis membrane with concentration polarization – A review. Chemical Engineering Research and Design, 201. pp. 645-678. ISSN 0263-8762. (Published) https://doi.org/10.1016/j.cherd.2023.10.060 10.1016/j.cherd.2023.10.060 |
| spellingShingle | TP Chemical technology Al-Amshawee, Sajjad Mohd Yusri, Mohd Yunus Electrodialysis membrane with concentration polarization – A review |
| title | Electrodialysis membrane with concentration polarization – A review |
| title_full | Electrodialysis membrane with concentration polarization – A review |
| title_fullStr | Electrodialysis membrane with concentration polarization – A review |
| title_full_unstemmed | Electrodialysis membrane with concentration polarization – A review |
| title_short | Electrodialysis membrane with concentration polarization – A review |
| title_sort | electrodialysis membrane with concentration polarization a review |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/39943/1/1-s2.0-S0263876223006962-main.pdf http://umpir.ump.edu.my/id/eprint/39943/7/Electrodialysis%20membrane%20with%20concentration%20polarization.pdf |
| work_keys_str_mv | AT alamshaweesajjad electrodialysismembranewithconcentrationpolarizationareview AT mohdyusrimohdyunus electrodialysismembranewithconcentrationpolarizationareview |