Removal of chloride ions using a bismuth electrode in capacitive deionization (CDI)

doi:10.1039/c9ew00985j

	Removal of chloride ions using a bismuth electrode in capacitive deionization (CDI)
	Chang, Junjun 1,2,3; Duan, Feng 1,3; Su, Chunlei 1,2,3; Li, Yuping 1,2,3; Cao, Hongbin 1,3
刊名	ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
	2020-02-01
卷号	6 期号:2 页码:373-382
ISSN号	2053-1400
DOI	10.1039/c9ew00985j
英文摘要	Non-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.
资助项目	National Natural Science Foundation of China (NSFC)[21377130] ; National Natural Science Foundation of China (NSFC)[51878645]
WOS关键词	ACTIVATED CARBON ; WATER DESALINATION ; BRACKISH-WATER ; MEMBRANE ; PERFORMANCE ; FLUORIDE ; AEROGELS ; ENERGY
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000513242200011
资助机构	National Natural Science Foundation of China (NSFC)
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/39295]
专题	中国科学院过程工程研究所
通讯作者	Li, Yuping
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Beijing 100190, Peoples R China
推荐引用方式 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.