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Removal of chloride ions using a bismuth electrode in capacitive deionization (CDI)
Chang, Junjun1,2,3; Duan, Feng1,2; Su, Chunlei1,2,3; Li, Yuping1,2,3; Cao, Hongbin1,2
2020-02-01
Source PublicationENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
ISSN2053-1400
Volume6Issue:2Pages:373-382
AbstractNon-carbon materials in capacitive deionization (CDI) can help to enhance the capacity of removed ions. Here, we report for the first time the removal of chloride ions (Cl-) with a bismuth (Bi) anode when coupled with an activated carbon (AC) cathode in CDI. The effects of carbon black in the Bi electrode, applied voltage, electrode mass loading and initial concentration on Cl- removal are investigated. Moreover, its cycle performance is also tested. Results show that addition of carbon black to a Bi electrode (Bi@CB) significantly improves Cl- removal. The declining trend of Cl- concentration and appearance of peaks assigned to products of bismuth oxychloride (BiOCl) in XRD patterns confirm Cl- storage by the Bi electrode, which is enhanced with an increase in voltage. When coupled with AC in a fixed mass, increasing the Bi mass does not contribute to more Cl- removal. Although the cycle performance is not excellent (the attenuation rate is 74% after 10 cycles), its chloride removal capacity is similar to 2-3 times the value of AC (e.g. 0.95 vs. 0.32 mmol g(Bi)(-1) at 1.2 V in 500 mg L-1 NaCl solution). Besides, the Bi-AC electrode pair in CDI is more suitable to remove Cl- from a solution with a Cl- concentration of below 600 mg L-1.
DOI10.1039/c9ew00985j
Language英语
WOS KeywordACTIVATED CARBON ; WATER DESALINATION ; BRACKISH-WATER ; MEMBRANE ; PERFORMANCE ; FLUORIDE ; AEROGELS ; ENERGY
Funding ProjectNational Natural Science Foundation of China (NSFC)[21377130] ; National Natural Science Foundation of China (NSFC)[51878645]
WOS Research AreaEngineering ; Environmental Sciences & Ecology ; Water Resources
WOS SubjectEngineering, Environmental ; Environmental Sciences ; Water Resources
Funding OrganizationNational Natural Science Foundation of China (NSFC)
WOS IDWOS:000513242200011
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/39296
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Yuping
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Chang, Junjun,Duan, Feng,Su, Chunlei,et al. Removal of chloride ions using a bismuth electrode in capacitive deionization (CDI)[J]. ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY,2020,6(2):373-382.
APA Chang, Junjun,Duan, Feng,Su, Chunlei,Li, Yuping,&Cao, Hongbin.(2020).Removal of chloride ions using a bismuth electrode in capacitive deionization (CDI).ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY,6(2),373-382.
MLA Chang, Junjun,et al."Removal of chloride ions using a bismuth electrode in capacitive deionization (CDI)".ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY 6.2(2020):373-382.
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