How RO membrane permeability and other performance factors affect process cost and energy use: A review
Reverse osmosis (RO) technology has progressed steadily over the last few decades. Those gains were achieved through improvements in both RO membrane element performance and energy recovery technologies. However, some recent literature indicates that RO membrane water permeability is approaching per...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Elsevier BV
2019
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| Online Access: | https://hdl.handle.net/1721.1/122632 |
| _version_ | 1826195492501979136 |
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| author | Okamoto, Yoshiki Lienhard, John H |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Okamoto, Yoshiki Lienhard, John H |
| author_sort | Okamoto, Yoshiki |
| collection | MIT |
| description | Reverse osmosis (RO) technology has progressed steadily over the last few decades. Those gains were achieved through improvements in both RO membrane element performance and energy recovery technologies. However, some recent literature indicates that RO membrane water permeability is approaching performance limits imposed by transport processes and thermodynamic constraints. This paper reviews how RO membrane element performance affects the cost of RO processes, especially the specific energy consumption. RO membrane performance encompasses water permeability, salt permeability, and other some characteristics of the RO element. This paper considers not only conventional RO processes, but also the recently proposed closed-circuit RO and batch RO processes. Even if the membrane water permeability increases, little additional effect is found when the membrane water permeability exceeds around 3 LMH/bar for seawater RO and 8 LMH/bar for brackish water RO in conventional single-stage RO. Increasing membrane water permeability has the potential to decrease membrane surface area and associated costs. A major limitation of most existing literature is that performance is evaluation on in terms of the initial operating conditions. Chronological changes, such as result from fouling, must also be considered to accurately validate how membrane element performance affects RO cost. |
| first_indexed | 2024-09-23T10:13:32Z |
| format | Article |
| id | mit-1721.1/122632 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:13:32Z |
| publishDate | 2019 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1226322022-09-26T16:36:08Z How RO membrane permeability and other performance factors affect process cost and energy use: A review Okamoto, Yoshiki Lienhard, John H Massachusetts Institute of Technology. Department of Mechanical Engineering Reverse osmosis (RO) technology has progressed steadily over the last few decades. Those gains were achieved through improvements in both RO membrane element performance and energy recovery technologies. However, some recent literature indicates that RO membrane water permeability is approaching performance limits imposed by transport processes and thermodynamic constraints. This paper reviews how RO membrane element performance affects the cost of RO processes, especially the specific energy consumption. RO membrane performance encompasses water permeability, salt permeability, and other some characteristics of the RO element. This paper considers not only conventional RO processes, but also the recently proposed closed-circuit RO and batch RO processes. Even if the membrane water permeability increases, little additional effect is found when the membrane water permeability exceeds around 3 LMH/bar for seawater RO and 8 LMH/bar for brackish water RO in conventional single-stage RO. Increasing membrane water permeability has the potential to decrease membrane surface area and associated costs. A major limitation of most existing literature is that performance is evaluation on in terms of the initial operating conditions. Chronological changes, such as result from fouling, must also be considered to accurately validate how membrane element performance affects RO cost. 2019-10-18T16:57:19Z 2019-10-18T16:57:19Z 2019-11 2019-07 2019-10-16T15:52:27Z Article http://purl.org/eprint/type/JournalArticle 0011-9164 https://hdl.handle.net/1721.1/122632 Okamoto, Yoshiki and John H.Lienhard. "How RO membrane permeability and other performance factors affect process cost and energy use: A review." 470 (November 2019): 114064 © 2019 Elsevier B.V. en http://dx.doi.org/10.1016/j.desal.2019.07.004 Desalination Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Elsevier BV Prof. Lienhard |
| spellingShingle | Okamoto, Yoshiki Lienhard, John H How RO membrane permeability and other performance factors affect process cost and energy use: A review |
| title | How RO membrane permeability and other performance factors affect process cost and energy use: A review |
| title_full | How RO membrane permeability and other performance factors affect process cost and energy use: A review |
| title_fullStr | How RO membrane permeability and other performance factors affect process cost and energy use: A review |
| title_full_unstemmed | How RO membrane permeability and other performance factors affect process cost and energy use: A review |
| title_short | How RO membrane permeability and other performance factors affect process cost and energy use: A review |
| title_sort | how ro membrane permeability and other performance factors affect process cost and energy use a review |
| url | https://hdl.handle.net/1721.1/122632 |
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