Creation of water-permeation pathways with matrix-polymer functionalized carbon nanotubes in polymeric membranes for pervaporation desalination
Membrane-based pervaporation desalination is an effective process for freshwater resource and treatments on waste brines. Both water permeation fluxes and salt rejection are concerned for the membrane-based desalination. In this work an effective approach to increase the water permeation fluxes of t...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Journal of Membrane Science Letters |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772421222000150 |
| _version_ | 1811184575616909312 |
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| author | Cheng Tseng Ying-Ling Liu |
| author_facet | Cheng Tseng Ying-Ling Liu |
| author_sort | Cheng Tseng |
| collection | DOAJ |
| description | Membrane-based pervaporation desalination is an effective process for freshwater resource and treatments on waste brines. Both water permeation fluxes and salt rejection are concerned for the membrane-based desalination. In this work an effective approach to increase the water permeation fluxes of the pervaporation desalination membranes has been demonstrated through utilization of matrix-polymer functionalized carbon nanotubes in creation of water permeation pathways in the membranes. With poly(vinyl alcohol) (PVA) as the matrix polymer for membrane fabrication, a small amount of PVA-functionalized CNTs (0.06 wt%) effectively increases the water permeation fluxes of the PVA membranes from 1,630 to 6,140 gm−2h−1 (feeding solution: 3.5 wt% NaCl(aq) at 25 °C) without sacrifice of salt rejection, corresponding to a 3.77-times of increase in water permeation flux. The membrane is also workable on concentrated salt aqueous solution (15 wt% NaCl(aq)). The approach has the potential to be employed to other polymer membranes for pervaporation separation. |
| first_indexed | 2024-04-11T13:14:34Z |
| format | Article |
| id | doaj.art-3da62c0e465f47a9bd637c337817a304 |
| institution | Directory Open Access Journal |
| issn | 2772-4212 |
| language | English |
| last_indexed | 2024-04-11T13:14:34Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Membrane Science Letters |
| spelling | doaj.art-3da62c0e465f47a9bd637c337817a3042022-12-22T04:22:26ZengElsevierJournal of Membrane Science Letters2772-42122022-11-0122100027Creation of water-permeation pathways with matrix-polymer functionalized carbon nanotubes in polymeric membranes for pervaporation desalinationCheng Tseng0Ying-Ling Liu1Department of Chemical Engineering, National Tsing Hua University, #101, Sec. 2, Kuang-Fu Road, Hsinchu 300044, TaiwanCorresponding author: Tel.: +886 3 5711450; fax: +886 3 5715408; Department of Chemical Engineering, National Tsing Hua University, #101, Sec. 2, Kuang-Fu Road, Hsinchu 300044, TaiwanMembrane-based pervaporation desalination is an effective process for freshwater resource and treatments on waste brines. Both water permeation fluxes and salt rejection are concerned for the membrane-based desalination. In this work an effective approach to increase the water permeation fluxes of the pervaporation desalination membranes has been demonstrated through utilization of matrix-polymer functionalized carbon nanotubes in creation of water permeation pathways in the membranes. With poly(vinyl alcohol) (PVA) as the matrix polymer for membrane fabrication, a small amount of PVA-functionalized CNTs (0.06 wt%) effectively increases the water permeation fluxes of the PVA membranes from 1,630 to 6,140 gm−2h−1 (feeding solution: 3.5 wt% NaCl(aq) at 25 °C) without sacrifice of salt rejection, corresponding to a 3.77-times of increase in water permeation flux. The membrane is also workable on concentrated salt aqueous solution (15 wt% NaCl(aq)). The approach has the potential to be employed to other polymer membranes for pervaporation separation.http://www.sciencedirect.com/science/article/pii/S2772421222000150pervaporationdesalinationcarbon nanotubewater-permeation pathwayspoly(vinyl alcohol) |
| spellingShingle | Cheng Tseng Ying-Ling Liu Creation of water-permeation pathways with matrix-polymer functionalized carbon nanotubes in polymeric membranes for pervaporation desalination Journal of Membrane Science Letters pervaporation desalination carbon nanotube water-permeation pathways poly(vinyl alcohol) |
| title | Creation of water-permeation pathways with matrix-polymer functionalized carbon nanotubes in polymeric membranes for pervaporation desalination |
| title_full | Creation of water-permeation pathways with matrix-polymer functionalized carbon nanotubes in polymeric membranes for pervaporation desalination |
| title_fullStr | Creation of water-permeation pathways with matrix-polymer functionalized carbon nanotubes in polymeric membranes for pervaporation desalination |
| title_full_unstemmed | Creation of water-permeation pathways with matrix-polymer functionalized carbon nanotubes in polymeric membranes for pervaporation desalination |
| title_short | Creation of water-permeation pathways with matrix-polymer functionalized carbon nanotubes in polymeric membranes for pervaporation desalination |
| title_sort | creation of water permeation pathways with matrix polymer functionalized carbon nanotubes in polymeric membranes for pervaporation desalination |
| topic | pervaporation desalination carbon nanotube water-permeation pathways poly(vinyl alcohol) |
| url | http://www.sciencedirect.com/science/article/pii/S2772421222000150 |
| work_keys_str_mv | AT chengtseng creationofwaterpermeationpathwayswithmatrixpolymerfunctionalizedcarbonnanotubesinpolymericmembranesforpervaporationdesalination AT yinglingliu creationofwaterpermeationpathwayswithmatrixpolymerfunctionalizedcarbonnanotubesinpolymericmembranesforpervaporationdesalination |