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Electrode for selective bromide removal in membrane capacitive deionisation

Authors
Dorji, PemaPhuntsho, SherubKim, David InhyukLim, SungilPark, Myoung JunHong, SeungkwanShon, Ho Kyong
Issue Date
1월-2022
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
Bromide; Electrode; Disinfection by-products; Selective; Membrane capacitive deionisation
Citation
CHEMOSPHERE, v.287
Indexed
SCIE
SCOPUS
Journal Title
CHEMOSPHERE
Volume
287
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/139420
DOI
10.1016/j.chemosphere.2021.132169
ISSN
0045-6535
Abstract
Due to the shortage of freshwater around the world, seawater is becoming an important water source. However, seawater contains a high concentration of bromide that can form harmful disinfection by-products during water disinfection. Therefore, the current seawater reverse osmosis (SWRO) has to adopt two-pass reverse osmosis (RO) configuration for effective bromide removal, increasing the overall desalination cost. In this study, a bromide selective composite electrode was developed for membrane capacitive deionisation (MCDI). The composite electrode was developed by coating a mixture of bromide selective resin and anion exchange polymer on the surface of the commercial activated carbon electrode, and its performance was compared to that of conventional carbon electrode. The results demonstrated that the composite electrode has ten times better bromide selectivity than the conventional carbon electrode. The study shows the potential application of MCDI for the selective removal of target ions from water sources and the potential for resource recovery through basic modification of commercial electrode.
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Hong, Seung kwan
공과대학 (건축사회환경공학부)
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