One-step rejuvenation for prolonging running lifespan of nanofiltration membranes
Commercial nanofiltration (NF) membranes based on polyamides may experience a decline in permeation performance after prolonged operation. The short lifespan of NF membranes will lead to waste and additional carbon emissions. Thus, rejuvenating membranes and extending their lifespan seem more meanin...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co. Ltd.
2024-01-01
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| Series: | Advanced Membranes |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772823424000058 |
| _version_ | 1826911839753076736 |
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| author | Guoyuan Pan Muhua Zhao Ying Wan Guoke Zhao Hao Yu Gongqing Tang Yang Zhang Yiqun Liu |
| author_facet | Guoyuan Pan Muhua Zhao Ying Wan Guoke Zhao Hao Yu Gongqing Tang Yang Zhang Yiqun Liu |
| author_sort | Guoyuan Pan |
| collection | DOAJ |
| description | Commercial nanofiltration (NF) membranes based on polyamides may experience a decline in permeation performance after prolonged operation. The short lifespan of NF membranes will lead to waste and additional carbon emissions. Thus, rejuvenating membranes and extending their lifespan seem more meaningful than investigating new materials. In this paper, polyamide NF membranes were modified with various polyphenol monomers to improve their permeation performance. The effects of different polyphenols on pore size, surface morphology, and permeation performance of the NF membranes were thoroughly investigated. After modification with tannic acid, the NF membrane exhibits improved salt rejection while experiencing an acceptable decrease in water flux. It should be noted that the commercial NF membrane element fabricated by Koch can recover its Na2SO4 rejection from 83.0% to 94.2% and demonstrate long-term stability after rejuvenation with tannic acid. Combined with the environmental friendliness of polyphenols, this straightforward modification method has the potential for prolonging the operational lifespan of industrial NF membrane products. |
| first_indexed | 2024-04-24T20:25:19Z |
| format | Article |
| id | doaj.art-ddf2e89a7e6c47a59c30cc5ae82e756c |
| institution | Directory Open Access Journal |
| issn | 2772-8234 |
| language | English |
| last_indexed | 2025-02-17T10:21:30Z |
| publishDate | 2024-01-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Advanced Membranes |
| spelling | doaj.art-ddf2e89a7e6c47a59c30cc5ae82e756c2025-01-01T05:11:36ZengKeAi Communications Co. Ltd.Advanced Membranes2772-82342024-01-014100094One-step rejuvenation for prolonging running lifespan of nanofiltration membranesGuoyuan Pan0Muhua Zhao1Ying Wan2Guoke Zhao3Hao Yu4Gongqing Tang5Yang Zhang6Yiqun Liu7SINOPEC Beijing Research Institute of Chemical Industry, Beijing, 100013, PR ChinaSINOPEC Beijing Research Institute of Chemical Industry, Beijing, 100013, PR ChinaChina National Pulp and Paper Research Institute, Beijing, 100102, PR ChinaSINOPEC Beijing Research Institute of Chemical Industry, Beijing, 100013, PR ChinaSINOPEC Beijing Research Institute of Chemical Industry, Beijing, 100013, PR ChinaSINOPEC Beijing Research Institute of Chemical Industry, Beijing, 100013, PR ChinaSINOPEC Beijing Research Institute of Chemical Industry, Beijing, 100013, PR China; Corresponding author.SINOPEC Beijing Research Institute of Chemical Industry, Beijing, 100013, PR China; Corresponding author.Commercial nanofiltration (NF) membranes based on polyamides may experience a decline in permeation performance after prolonged operation. The short lifespan of NF membranes will lead to waste and additional carbon emissions. Thus, rejuvenating membranes and extending their lifespan seem more meaningful than investigating new materials. In this paper, polyamide NF membranes were modified with various polyphenol monomers to improve their permeation performance. The effects of different polyphenols on pore size, surface morphology, and permeation performance of the NF membranes were thoroughly investigated. After modification with tannic acid, the NF membrane exhibits improved salt rejection while experiencing an acceptable decrease in water flux. It should be noted that the commercial NF membrane element fabricated by Koch can recover its Na2SO4 rejection from 83.0% to 94.2% and demonstrate long-term stability after rejuvenation with tannic acid. Combined with the environmental friendliness of polyphenols, this straightforward modification method has the potential for prolonging the operational lifespan of industrial NF membrane products.http://www.sciencedirect.com/science/article/pii/S2772823424000058ModificationNanofiltrationPolyamidePolyphenol |
| spellingShingle | Guoyuan Pan Muhua Zhao Ying Wan Guoke Zhao Hao Yu Gongqing Tang Yang Zhang Yiqun Liu One-step rejuvenation for prolonging running lifespan of nanofiltration membranes Advanced Membranes Modification Nanofiltration Polyamide Polyphenol |
| title | One-step rejuvenation for prolonging running lifespan of nanofiltration membranes |
| title_full | One-step rejuvenation for prolonging running lifespan of nanofiltration membranes |
| title_fullStr | One-step rejuvenation for prolonging running lifespan of nanofiltration membranes |
| title_full_unstemmed | One-step rejuvenation for prolonging running lifespan of nanofiltration membranes |
| title_short | One-step rejuvenation for prolonging running lifespan of nanofiltration membranes |
| title_sort | one step rejuvenation for prolonging running lifespan of nanofiltration membranes |
| topic | Modification Nanofiltration Polyamide Polyphenol |
| url | http://www.sciencedirect.com/science/article/pii/S2772823424000058 |
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