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Cho, Kyung Hwa
Water-Environmental Informatics Lab (WEIL)
Research Interests
  • Water Quality Monitoring and Modeling, Water Treatment Process Modeling

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Investigating the influence of catholyte salinity on seawater battery desalination

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Title
Investigating the influence of catholyte salinity on seawater battery desalination
Author
Park, SanghunLigaray, MayzoneeKim, YoungsikChon, KangminSon, MoonCho, Kyung Hwa
Issue Date
2021-06
Publisher
ELSEVIER
Citation
DESALINATION, v.506, pp.115018
Abstract
The seawater battery (SWB) is a promising desalination technology that utilizes abundant sodium ions as an energy storage medium. Recently, the alternative desalination system, seawater battery desalination (SWB-D), was developed by placing an SWB next to the desalination compartment. This SWB-D system can desalt water while charging the SWB next to it. However, only a fixed catholyte solution has been investigated, although the catholytes impact the overall SWB-D performance. Therefore, we evaluated the effect of different catholytes on the desalination performance. High-saline reverse osmosis (RO) concentrate or brackish water exhibited excellent salt removal capability (>85.3% of sodium and >76.6% of chloride ions) with relatively short operation times (36.4 h for RO concentrate and 39.5 h for brackish water) upon charging, whereas the relatively low-saline river water showed the longest operation time (81.0 h), implying that river water should be excluded as a potential catholyte. The amount of desalinated water was marginally reduced due to osmosis through the anion exchange membrane; however, the amount of treated salt was >82.9% even after the reduction in water volume. These findings suggest that the catholyte with a resistance of >0.041 k??cm can be ideal for the SWB-D.
URI
https://scholarworks.unist.ac.kr/handle/201301/52645
URL
http://www.sciencedirect.com.ssl.openlink.unist.ac.kr:8080/science/article/pii/S0011916421000898
DOI
10.1016/j.desal.2021.115018
ISSN
0011-9164
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UEE_Journal Papers
ECHE_Journal Papers
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