A modeling investigation on optimizing the design of forward osmosis hollow fiber modules
Forward osmosis (FO) is an emerging osmotically driven membrane process, and its applications are becoming diversified. As one important membrane configuration, hollow fiber modules have been applied to some innovative FO processes, e.g., osmotic membrane bioreactor (OMBR). Aside from the inherent c...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/100381 http://hdl.handle.net/10220/13623 |
| _version_ | 1811682944366936064 |
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| author | Xiao, Dezhong Li, Weiyi Chou, Shuren Wang, Rong Tang, Chuyang Y. |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Xiao, Dezhong Li, Weiyi Chou, Shuren Wang, Rong Tang, Chuyang Y. |
| author_sort | Xiao, Dezhong |
| collection | NTU |
| description | Forward osmosis (FO) is an emerging osmotically driven membrane process, and its applications are becoming diversified. As one important membrane configuration, hollow fiber modules have been applied to some innovative FO processes, e.g., osmotic membrane bioreactor (OMBR). Aside from the inherent concentration polarization (CP) phenomena, new challenges are posed by the coupled concentrating and dilution effects in the design of FO hollow fiber modules. In this paper, a mathematical model is therefore developed to account for the evolution of the local performances within the FO hollow fiber module and to evaluate the global performances of interest. Then, this model is employed to theoretically investigate the filtration behaviors of the FO hollow fiber module by using the well-defined dimensionless groups, which indicates the complex interplay among a variety of design parameters. Particularly, the optimization objectives are focused on enhancing the module-averaged FO efficiency and avoiding the severe concentration variations in the module channels. In terms of the simulation results, some criteria are obtained for optimizing the operating conditions (flow configuration, inlet concentration level, inlet flow rate), the hollow fiber characteristics (fiber length), and the FO membrane properties (active layer selectivity, support layer transport resistance). This work provides deep insights into the design of the FO hollow fiber module, and could be readily modified to accommodate more complicated cases. |
| first_indexed | 2024-10-01T04:04:53Z |
| format | Journal Article |
| id | ntu-10356/100381 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:04:53Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/1003812020-03-07T11:45:53Z A modeling investigation on optimizing the design of forward osmosis hollow fiber modules Xiao, Dezhong Li, Weiyi Chou, Shuren Wang, Rong Tang, Chuyang Y. School of Civil and Environmental Engineering Singapore Membrane Technology Centre DRNTU::Engineering::Environmental engineering DRNTU::Engineering::Civil engineering Forward osmosis (FO) is an emerging osmotically driven membrane process, and its applications are becoming diversified. As one important membrane configuration, hollow fiber modules have been applied to some innovative FO processes, e.g., osmotic membrane bioreactor (OMBR). Aside from the inherent concentration polarization (CP) phenomena, new challenges are posed by the coupled concentrating and dilution effects in the design of FO hollow fiber modules. In this paper, a mathematical model is therefore developed to account for the evolution of the local performances within the FO hollow fiber module and to evaluate the global performances of interest. Then, this model is employed to theoretically investigate the filtration behaviors of the FO hollow fiber module by using the well-defined dimensionless groups, which indicates the complex interplay among a variety of design parameters. Particularly, the optimization objectives are focused on enhancing the module-averaged FO efficiency and avoiding the severe concentration variations in the module channels. In terms of the simulation results, some criteria are obtained for optimizing the operating conditions (flow configuration, inlet concentration level, inlet flow rate), the hollow fiber characteristics (fiber length), and the FO membrane properties (active layer selectivity, support layer transport resistance). This work provides deep insights into the design of the FO hollow fiber module, and could be readily modified to accommodate more complicated cases. 2013-09-24T04:08:01Z 2019-12-06T20:21:27Z 2013-09-24T04:08:01Z 2019-12-06T20:21:27Z 2011 2011 Journal Article Xiao, D., Li, W., Chou, S., Wang, R., & Tang, C. Y. (2011). A modeling investigation on optimizing the design of forward osmosis hollow fiber modules. Journal of membrane science, 392-393, 76-87. https://hdl.handle.net/10356/100381 http://hdl.handle.net/10220/13623 10.1016/j.memsci.2011.12.006 en Journal of membrane science |
| spellingShingle | DRNTU::Engineering::Environmental engineering DRNTU::Engineering::Civil engineering Xiao, Dezhong Li, Weiyi Chou, Shuren Wang, Rong Tang, Chuyang Y. A modeling investigation on optimizing the design of forward osmosis hollow fiber modules |
| title | A modeling investigation on optimizing the design of forward osmosis hollow fiber modules |
| title_full | A modeling investigation on optimizing the design of forward osmosis hollow fiber modules |
| title_fullStr | A modeling investigation on optimizing the design of forward osmosis hollow fiber modules |
| title_full_unstemmed | A modeling investigation on optimizing the design of forward osmosis hollow fiber modules |
| title_short | A modeling investigation on optimizing the design of forward osmosis hollow fiber modules |
| title_sort | modeling investigation on optimizing the design of forward osmosis hollow fiber modules |
| topic | DRNTU::Engineering::Environmental engineering DRNTU::Engineering::Civil engineering |
| url | https://hdl.handle.net/10356/100381 http://hdl.handle.net/10220/13623 |
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