Sea and brackish water desalination through a novel PVDF-PTFE composite hydrophobic membrane by vacuum membrane distillation
Abstract The present study aims to evaluate the performance of porous hydrophobic Polyvinylidene fluoride − Polytetrafluoroethylene (PVDF-PTFE) composite membranes for desalination by vacuum membrane distillation (VMD) technique. The effect of operating parameters such as feed NaCl concentration (10...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Springer
2024-04-01
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| Series: | Discover Chemical Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s43938-024-00044-x |
| _version_ | 1797219830828367872 |
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| author | Madhu Mala Madupathi S. Srishti S. Fatima Sundergopal Sridhar |
| author_facet | Madhu Mala Madupathi S. Srishti S. Fatima Sundergopal Sridhar |
| author_sort | Madhu Mala Madupathi |
| collection | DOAJ |
| description | Abstract The present study aims to evaluate the performance of porous hydrophobic Polyvinylidene fluoride − Polytetrafluoroethylene (PVDF-PTFE) composite membranes for desalination by vacuum membrane distillation (VMD) technique. The effect of operating parameters such as feed NaCl concentration (10,000 to 40,000 mg/L), feed temperature (50 °C to 80 °C), and downstream pressure (80 to 120 mmHg) on water permeation rate was studied. The increase in feed temperature enhanced the water permeation rate due to a rise in driving force across the membrane. For a constant downstream pressure of 80 mmHg, feed temperature of 80 °C and feed flow rate of 80 L/h, the membrane exhibited a maximum water flux of 3 kg/m2h with 99.86% salt rejection when aqueous NaCl concentration of 10,000 mg/L was charged as feed. Membrane characterization was performed using various analytical tools to determine physico-chemical properties such as pore size, structural elucidation, thermal stability, crystallinity, and hydrophobicity of the membrane material. Further, a temperature and concentration polarization coefficient-based analysis was performed by solving the mass and heat transport model equations using MATLAB software. The proposed research study promotes the application of VMD for recovering potable water from highly saline sea/brackish water and alleviates brine disposal issues. |
| first_indexed | 2024-04-24T12:39:53Z |
| format | Article |
| id | doaj.art-dd5afe5215694b399e113aa076180aef |
| institution | Directory Open Access Journal |
| issn | 2730-7700 |
| language | English |
| last_indexed | 2024-04-24T12:39:53Z |
| publishDate | 2024-04-01 |
| publisher | Springer |
| record_format | Article |
| series | Discover Chemical Engineering |
| spelling | doaj.art-dd5afe5215694b399e113aa076180aef2024-04-07T11:20:08ZengSpringerDiscover Chemical Engineering2730-77002024-04-014111810.1007/s43938-024-00044-xSea and brackish water desalination through a novel PVDF-PTFE composite hydrophobic membrane by vacuum membrane distillationMadhu Mala Madupathi0S. Srishti1S. Fatima2Sundergopal Sridhar3Membrane Separations Laboratory, Chemical Engineering and Process Technology Division, CSIR, Indian Institute of Chemical TechnologyMembrane Separations Laboratory, Chemical Engineering and Process Technology Division, CSIR, Indian Institute of Chemical TechnologyMembrane Separations Laboratory, Chemical Engineering and Process Technology Division, CSIR, Indian Institute of Chemical TechnologyMembrane Separations Laboratory, Chemical Engineering and Process Technology Division, CSIR, Indian Institute of Chemical TechnologyAbstract The present study aims to evaluate the performance of porous hydrophobic Polyvinylidene fluoride − Polytetrafluoroethylene (PVDF-PTFE) composite membranes for desalination by vacuum membrane distillation (VMD) technique. The effect of operating parameters such as feed NaCl concentration (10,000 to 40,000 mg/L), feed temperature (50 °C to 80 °C), and downstream pressure (80 to 120 mmHg) on water permeation rate was studied. The increase in feed temperature enhanced the water permeation rate due to a rise in driving force across the membrane. For a constant downstream pressure of 80 mmHg, feed temperature of 80 °C and feed flow rate of 80 L/h, the membrane exhibited a maximum water flux of 3 kg/m2h with 99.86% salt rejection when aqueous NaCl concentration of 10,000 mg/L was charged as feed. Membrane characterization was performed using various analytical tools to determine physico-chemical properties such as pore size, structural elucidation, thermal stability, crystallinity, and hydrophobicity of the membrane material. Further, a temperature and concentration polarization coefficient-based analysis was performed by solving the mass and heat transport model equations using MATLAB software. The proposed research study promotes the application of VMD for recovering potable water from highly saline sea/brackish water and alleviates brine disposal issues.https://doi.org/10.1007/s43938-024-00044-xConcentration polarization coefficientFluxModelingPolyvinylidene fluoridePolytetrafluoroethylene% Salt rejection |
| spellingShingle | Madhu Mala Madupathi S. Srishti S. Fatima Sundergopal Sridhar Sea and brackish water desalination through a novel PVDF-PTFE composite hydrophobic membrane by vacuum membrane distillation Discover Chemical Engineering Concentration polarization coefficient Flux Modeling Polyvinylidene fluoride Polytetrafluoroethylene % Salt rejection |
| title | Sea and brackish water desalination through a novel PVDF-PTFE composite hydrophobic membrane by vacuum membrane distillation |
| title_full | Sea and brackish water desalination through a novel PVDF-PTFE composite hydrophobic membrane by vacuum membrane distillation |
| title_fullStr | Sea and brackish water desalination through a novel PVDF-PTFE composite hydrophobic membrane by vacuum membrane distillation |
| title_full_unstemmed | Sea and brackish water desalination through a novel PVDF-PTFE composite hydrophobic membrane by vacuum membrane distillation |
| title_short | Sea and brackish water desalination through a novel PVDF-PTFE composite hydrophobic membrane by vacuum membrane distillation |
| title_sort | sea and brackish water desalination through a novel pvdf ptfe composite hydrophobic membrane by vacuum membrane distillation |
| topic | Concentration polarization coefficient Flux Modeling Polyvinylidene fluoride Polytetrafluoroethylene % Salt rejection |
| url | https://doi.org/10.1007/s43938-024-00044-x |
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