A novel hybrid process of reverse electrodialysis and reverse osmosis for low energy seawater desalination and brine management

This paper introduces a novel concept for a hybrid desalination system that combines reverse electrodialysis (RED) and reverse osmosis (RO) processes. In this hybrid process the RED unit harvests the energy in the form of electricity from the salinity gradient between a highly concentrated solutio...

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Main Authors: Li, Weiyi., Krantz, William B., Cornelissen, Emile, R., Post, Jan W., Verliefde, Arne R. D., Tang, Chuyang Y.
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2013
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Online Access:https://hdl.handle.net/10356/99732
http://hdl.handle.net/10220/11011
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-997322020-03-07T12:48:43Z A novel hybrid process of reverse electrodialysis and reverse osmosis for low energy seawater desalination and brine management Li, Weiyi. Krantz, William B. Cornelissen, Emile, R. Post, Jan W. Verliefde, Arne R. D. Tang, Chuyang Y. School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre DRNTU::Engineering::Civil engineering::Water resources This paper introduces a novel concept for a hybrid desalination system that combines reverse electrodialysis (RED) and reverse osmosis (RO) processes. In this hybrid process the RED unit harvests the energy in the form of electricity from the salinity gradient between a highly concentrated solution (e.g., seawater or concentrated brine) and a low salinity solution (e.g., biologically treated secondary effluent or impaired water). The RED-treated high salinity solution has a lower salt concentration and serves as the feed solution for the RO unit to reduce the pump work. The concentrated RO brine provides the RED unit a better high salinity source for the energy recovery compared to seawater. In addition, the concentration of the discharged brine can be controlled by the RED unit for improving the water recovery and minimizing the impact on the environment. Different configurations of the hybrid RED–RO processes are presented for a comparative study on the basis of mathematical modeling. Specifically, various operating conditions for the RED unit are investigated for better adaptation to the hybrid system. The variations of the total specific energy consumption and the discharge brine concentration for various hybrid modes are simulated to verify the conceptual designs. The modeling results indicate that the RED–RO hybrid processes could substantially reduce the specific energy consumption and provide a better control of the discharge brine concentration in comparison to conventional seawater desalination RO processes. 2013-07-08T04:15:57Z 2019-12-06T20:10:50Z 2013-07-08T04:15:57Z 2019-12-06T20:10:50Z 2012 2012 Journal Article Li, W., Krantz, W. B., Cornelissen, E. R., Post, J. W, Verliefde, A. R. D., & Tang, C. Y. (2012). A novel hybrid process of reverse electrodialysis and reverse osmosis for low energy seawater desalination and brine management. Applied energy, 104, 592-602. 0306-2619 https://hdl.handle.net/10356/99732 http://hdl.handle.net/10220/11011 10.1016/j.apenergy.2012.11.064 en Applied energy © 2012 Elsevier Ltd.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Civil engineering::Water resources
spellingShingle DRNTU::Engineering::Civil engineering::Water resources
Li, Weiyi.
Krantz, William B.
Cornelissen, Emile, R.
Post, Jan W.
Verliefde, Arne R. D.
Tang, Chuyang Y.
A novel hybrid process of reverse electrodialysis and reverse osmosis for low energy seawater desalination and brine management
description This paper introduces a novel concept for a hybrid desalination system that combines reverse electrodialysis (RED) and reverse osmosis (RO) processes. In this hybrid process the RED unit harvests the energy in the form of electricity from the salinity gradient between a highly concentrated solution (e.g., seawater or concentrated brine) and a low salinity solution (e.g., biologically treated secondary effluent or impaired water). The RED-treated high salinity solution has a lower salt concentration and serves as the feed solution for the RO unit to reduce the pump work. The concentrated RO brine provides the RED unit a better high salinity source for the energy recovery compared to seawater. In addition, the concentration of the discharged brine can be controlled by the RED unit for improving the water recovery and minimizing the impact on the environment. Different configurations of the hybrid RED–RO processes are presented for a comparative study on the basis of mathematical modeling. Specifically, various operating conditions for the RED unit are investigated for better adaptation to the hybrid system. The variations of the total specific energy consumption and the discharge brine concentration for various hybrid modes are simulated to verify the conceptual designs. The modeling results indicate that the RED–RO hybrid processes could substantially reduce the specific energy consumption and provide a better control of the discharge brine concentration in comparison to conventional seawater desalination RO processes.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Li, Weiyi.
Krantz, William B.
Cornelissen, Emile, R.
Post, Jan W.
Verliefde, Arne R. D.
Tang, Chuyang Y.
format Article
author Li, Weiyi.
Krantz, William B.
Cornelissen, Emile, R.
Post, Jan W.
Verliefde, Arne R. D.
Tang, Chuyang Y.
author_sort Li, Weiyi.
title A novel hybrid process of reverse electrodialysis and reverse osmosis for low energy seawater desalination and brine management
title_short A novel hybrid process of reverse electrodialysis and reverse osmosis for low energy seawater desalination and brine management
title_full A novel hybrid process of reverse electrodialysis and reverse osmosis for low energy seawater desalination and brine management
title_fullStr A novel hybrid process of reverse electrodialysis and reverse osmosis for low energy seawater desalination and brine management
title_full_unstemmed A novel hybrid process of reverse electrodialysis and reverse osmosis for low energy seawater desalination and brine management
title_sort novel hybrid process of reverse electrodialysis and reverse osmosis for low energy seawater desalination and brine management
publishDate 2013
url https://hdl.handle.net/10356/99732
http://hdl.handle.net/10220/11011
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