Design and Preparation a New Composite Hydrophilic/Hydrophobic Membrane for Desalination by Pervaporation
Herein, experimental and theoretical approaches were used to design a new composite membrane for desalination by pervaporation. The theoretical approaches demonstrate the possibility to reach high mass transfer coefficients quite close to those obtained with conventional porous membranes if two cond...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-06-01
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| Series: | Membranes |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-0375/13/6/599 |
| _version_ | 1797593560687575040 |
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| author | Tarik Eljaddi Eric Favre Denis Roizard |
| author_facet | Tarik Eljaddi Eric Favre Denis Roizard |
| author_sort | Tarik Eljaddi |
| collection | DOAJ |
| description | Herein, experimental and theoretical approaches were used to design a new composite membrane for desalination by pervaporation. The theoretical approaches demonstrate the possibility to reach high mass transfer coefficients quite close to those obtained with conventional porous membranes if two conditions are verified: (i) a dense layer with a low thickness and (ii) a support with a high-water permeability. For this purpose, several membranes with a cellulose triacetate (CTA) polymer were prepared and compared with a hydrophobic membrane prepared in a previous study. The composite membranes were tested for several feed conditions, i.e., pure water, brine and saline water containing a surfactant. The results show that, whatever the tested feed, no wetting occurred during several hours of desalination tests. In addition, a steady flux was obtained together with a very high salt rejection (close to 100%) for the CTA membranes. Lastly, the CTA composite membrane was tested with real seawater without any pretreatment. It was shown that the salt rejection was still very high (close to 99.5%) and that no wetting could be detected for several hours. This investigation opens a new direction to prepare specific and sustainable membranes for desalination by pervaporation. |
| first_indexed | 2024-03-11T02:10:00Z |
| format | Article |
| id | doaj.art-1a59edacd1054507afc227063365d84a |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-11T02:10:00Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-1a59edacd1054507afc227063365d84a2023-11-18T11:33:52ZengMDPI AGMembranes2077-03752023-06-0113659910.3390/membranes13060599Design and Preparation a New Composite Hydrophilic/Hydrophobic Membrane for Desalination by PervaporationTarik Eljaddi0Eric Favre1Denis Roizard2LRGP—Laboratoire Réactions et Génie des Procédés, UMR 7274, 54001 Nancy, FranceLRGP—Laboratoire Réactions et Génie des Procédés, UMR 7274, 54001 Nancy, FranceLRGP—Laboratoire Réactions et Génie des Procédés, UMR 7274, 54001 Nancy, FranceHerein, experimental and theoretical approaches were used to design a new composite membrane for desalination by pervaporation. The theoretical approaches demonstrate the possibility to reach high mass transfer coefficients quite close to those obtained with conventional porous membranes if two conditions are verified: (i) a dense layer with a low thickness and (ii) a support with a high-water permeability. For this purpose, several membranes with a cellulose triacetate (CTA) polymer were prepared and compared with a hydrophobic membrane prepared in a previous study. The composite membranes were tested for several feed conditions, i.e., pure water, brine and saline water containing a surfactant. The results show that, whatever the tested feed, no wetting occurred during several hours of desalination tests. In addition, a steady flux was obtained together with a very high salt rejection (close to 100%) for the CTA membranes. Lastly, the CTA composite membrane was tested with real seawater without any pretreatment. It was shown that the salt rejection was still very high (close to 99.5%) and that no wetting could be detected for several hours. This investigation opens a new direction to prepare specific and sustainable membranes for desalination by pervaporation.https://www.mdpi.com/2077-0375/13/6/599desalinationCTA composite membranesthermo-pervaporationmass transfer predictionseawater |
| spellingShingle | Tarik Eljaddi Eric Favre Denis Roizard Design and Preparation a New Composite Hydrophilic/Hydrophobic Membrane for Desalination by Pervaporation Membranes desalination CTA composite membranes thermo-pervaporation mass transfer prediction seawater |
| title | Design and Preparation a New Composite Hydrophilic/Hydrophobic Membrane for Desalination by Pervaporation |
| title_full | Design and Preparation a New Composite Hydrophilic/Hydrophobic Membrane for Desalination by Pervaporation |
| title_fullStr | Design and Preparation a New Composite Hydrophilic/Hydrophobic Membrane for Desalination by Pervaporation |
| title_full_unstemmed | Design and Preparation a New Composite Hydrophilic/Hydrophobic Membrane for Desalination by Pervaporation |
| title_short | Design and Preparation a New Composite Hydrophilic/Hydrophobic Membrane for Desalination by Pervaporation |
| title_sort | design and preparation a new composite hydrophilic hydrophobic membrane for desalination by pervaporation |
| topic | desalination CTA composite membranes thermo-pervaporation mass transfer prediction seawater |
| url | https://www.mdpi.com/2077-0375/13/6/599 |
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