Modeling of flat-sheet and spiral-wound nanofiltration configurations and its application in seawater nanofiltration
The Donnan Steric Pore Model with dielectric exclusion (DSPM-DE) is implemented over flat-sheet and spiral-wound leaves to develop a comprehensive model for nanofiltration modules. This model allows the user to gain insight into the physics of the nanofiltration process by allowing one to adjust and...
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Elsevier
2015
|
| Online Access: | http://hdl.handle.net/1721.1/99918 https://orcid.org/0000-0002-2901-0638 https://orcid.org/0000-0003-4144-7493 |
| _version_ | 1826207084683722752 |
|---|---|
| author | Roy, Yagnaseni Sharqawy, Mostafa H. Lienhard, John H |
| author2 | Massachusetts Institute of Technology. Abdul Latif Jameel World Water & Food Security Lab |
| author_facet | Massachusetts Institute of Technology. Abdul Latif Jameel World Water & Food Security Lab Roy, Yagnaseni Sharqawy, Mostafa H. Lienhard, John H |
| author_sort | Roy, Yagnaseni |
| collection | MIT |
| description | The Donnan Steric Pore Model with dielectric exclusion (DSPM-DE) is implemented over flat-sheet and spiral-wound leaves to develop a comprehensive model for nanofiltration modules. This model allows the user to gain insight into the physics of the nanofiltration process by allowing one to adjust and investigate effects of membrane charge, pore radius, and other membrane characteristics. The study shows how operating conditions such as feed flow rate and pressure affect the recovery ratio and solute rejection across the membrane. A comparison is made between the results for the flat-sheet and spiral-wound configurations. The comparison showed that for the spiral-wound leaf, the maximum values of transmembrane pressure, flux and velocity occur at the feed entrance (near the permeate exit), and the lowest value of these quantities are at the diametrically opposite corner. This is in contrast to the flat-sheet leaf, where all the quantities vary only in the feed flow direction. However it is found that the extent of variation of these quantities along the permeate flow direction in the spiral-wound membrane is negligibly small in most cases. Also, for identical geometries and operating conditions, the flat-sheet and spiral-wound configurations give similar results. Thus the computationally expensive and complex spiral-wound model can be replaced by the flat-sheet model for a variety of purposes. In addition, the model was utilized to predict the performance of a seawater nanofiltration system which has been validated with the data obtained from a large-scale seawater desalination plant, thereby establishing a reliable model for desalination using nanofiltration. |
| first_indexed | 2024-09-23T13:43:39Z |
| format | Article |
| id | mit-1721.1/99918 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:43:39Z |
| publishDate | 2015 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/999182023-02-17T02:05:30Z Modeling of flat-sheet and spiral-wound nanofiltration configurations and its application in seawater nanofiltration Roy, Yagnaseni Sharqawy, Mostafa H. Lienhard, John H Massachusetts Institute of Technology. Abdul Latif Jameel World Water & Food Security Lab Massachusetts Institute of Technology. Department of Mechanical Engineering Roy, Yagnaseni Lienhard, John H. The Donnan Steric Pore Model with dielectric exclusion (DSPM-DE) is implemented over flat-sheet and spiral-wound leaves to develop a comprehensive model for nanofiltration modules. This model allows the user to gain insight into the physics of the nanofiltration process by allowing one to adjust and investigate effects of membrane charge, pore radius, and other membrane characteristics. The study shows how operating conditions such as feed flow rate and pressure affect the recovery ratio and solute rejection across the membrane. A comparison is made between the results for the flat-sheet and spiral-wound configurations. The comparison showed that for the spiral-wound leaf, the maximum values of transmembrane pressure, flux and velocity occur at the feed entrance (near the permeate exit), and the lowest value of these quantities are at the diametrically opposite corner. This is in contrast to the flat-sheet leaf, where all the quantities vary only in the feed flow direction. However it is found that the extent of variation of these quantities along the permeate flow direction in the spiral-wound membrane is negligibly small in most cases. Also, for identical geometries and operating conditions, the flat-sheet and spiral-wound configurations give similar results. Thus the computationally expensive and complex spiral-wound model can be replaced by the flat-sheet model for a variety of purposes. In addition, the model was utilized to predict the performance of a seawater nanofiltration system which has been validated with the data obtained from a large-scale seawater desalination plant, thereby establishing a reliable model for desalination using nanofiltration. Center for Clean Water and Clean Energy at MIT and KFUPM 2015-11-13T15:13:43Z 2015-11-13T15:13:43Z 2015-06 2015-06 Article http://purl.org/eprint/type/JournalArticle 03767388 http://hdl.handle.net/1721.1/99918 Roy, Yagnaseni, Mostafa H. Sharqawy, and John H. Lienhard. “Modeling of Flat-Sheet and Spiral-Wound Nanofiltration Configurations and Its Application in Seawater Nanofiltration.” Journal of Membrane Science 493 (November 2015): 360–372. https://orcid.org/0000-0002-2901-0638 https://orcid.org/0000-0003-4144-7493 en_US http://dx.doi.org/10.1016/j.memsci.2015.06.030 Journal of Membrane Science Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Elsevier Roy |
| spellingShingle | Roy, Yagnaseni Sharqawy, Mostafa H. Lienhard, John H Modeling of flat-sheet and spiral-wound nanofiltration configurations and its application in seawater nanofiltration |
| title | Modeling of flat-sheet and spiral-wound nanofiltration configurations and its application in seawater nanofiltration |
| title_full | Modeling of flat-sheet and spiral-wound nanofiltration configurations and its application in seawater nanofiltration |
| title_fullStr | Modeling of flat-sheet and spiral-wound nanofiltration configurations and its application in seawater nanofiltration |
| title_full_unstemmed | Modeling of flat-sheet and spiral-wound nanofiltration configurations and its application in seawater nanofiltration |
| title_short | Modeling of flat-sheet and spiral-wound nanofiltration configurations and its application in seawater nanofiltration |
| title_sort | modeling of flat sheet and spiral wound nanofiltration configurations and its application in seawater nanofiltration |
| url | http://hdl.handle.net/1721.1/99918 https://orcid.org/0000-0002-2901-0638 https://orcid.org/0000-0003-4144-7493 |
| work_keys_str_mv | AT royyagnaseni modelingofflatsheetandspiralwoundnanofiltrationconfigurationsanditsapplicationinseawaternanofiltration AT sharqawymostafah modelingofflatsheetandspiralwoundnanofiltrationconfigurationsanditsapplicationinseawaternanofiltration AT lienhardjohnh modelingofflatsheetandspiralwoundnanofiltrationconfigurationsanditsapplicationinseawaternanofiltration |