Effective inspissation of uranium(VI) from radioactive wastewater using flow electrode capacitive deionization

doi:10.1016/j.seppur.2021.120172

	Effective inspissation of uranium(VI) from radioactive wastewater using flow electrode capacitive deionization
	Zhou, Jian 1,3; Zhang, Xinyuan 1,2; Zhang, Yingzi 1,3; Wang, De 1,3; Zhou, Hongjian 1,2; Li, Jiaxing 1,3
刊名	SEPARATION AND PURIFICATION TECHNOLOGY
	2022-01-15
卷号	283
关键词	Flow electrode Inspissation Radioactive waste Electrosorption Uranium (VI)
ISSN号	1383-5866
DOI	10.1016/j.seppur.2021.120172
通讯作者	Zhou, Hongjian(hjzhou@issp.ac.cn) ; Li, Jiaxing(lijx@ipp.ac.cn)
英文摘要	The treatment for large amounts of low concentration radioactive wastewater has always been a worldwide problem, just like the Fukushima nuclear power plant is facing the problem of insufficient storage space. In this work, we have assessed the effectiveness of flow electrode capacitive deionization (FCDI) as a recently developed electrochemical technology to concentrate the radioactive wastewater for the first time. Continuous batch experiments demonstrated that uranium (U) can accumulate into the electrolyte and on activated carbon at the same time in the flow electrode, and the removal efficiency of U remained over 99% during each cycle. Combined with XPS analysis, the migration route and valence change of U in the flow electrode were revealed, which helped to understand the high adsorption capacity of U in FCDI. Long-term batch experiments exhibited that the low concentration of feed water (60 mg L-1 U) could be concentrated by 47 times after 48th continuous cycles, achieving a final concentration of 2843 mg L-1 U in the electrolyte, and 40 mL reduced volume of uranium containing water from 2,400 mL. Under optimized conditions, a charge efficiency of 86% and a low energy consumption of 2.03 mg J(-1) were achieved in 360 mg L-1 initial concentration of UO22+. Overall, high removal rate, excellent concentration effect and low energy consumption make FCDI to be a promising way for radioactive wastewater treatment.
资助项目	National Key Research and Development Project[2020YFC1806602] ; National Natural Science Foundation of China[21876178] ; National Natural Science Foundation of China[51872291] ; Key research and development projects of Anhui Prov-ince[202104a06020028] ; Priority Academic Program Development of Jiangsu Higher Education Institutions
WOS关键词	CARBON ; DESALINATION ; PERFORMANCE ; RECOVERY ; ADSORPTION ; EXTRACTION ; MECHANISM ; SEAWATER ; U(VI) ; UO22+
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000780913200005
资助机构	National Key Research and Development Project ; National Natural Science Foundation of China ; Key research and development projects of Anhui Prov-ince ; Priority Academic Program Development of Jiangsu Higher Education Institutions
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/130751]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhou, Hongjian; Li, Jiaxing
作者单位	1.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Ctr Environm & Energy Nanomat, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys,Inst Solid State Phys,HFIPS, Hefei 230031, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, CAS Key Lab Photovolta & Energy Conservat Mat, HFIPS, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Jian,Zhang, Xinyuan,Zhang, Yingzi,et al. Effective inspissation of uranium(VI) from radioactive wastewater using flow electrode capacitive deionization[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2022,283.
APA	Zhou, Jian,Zhang, Xinyuan,Zhang, Yingzi,Wang, De,Zhou, Hongjian,&Li, Jiaxing.(2022).Effective inspissation of uranium(VI) from radioactive wastewater using flow electrode capacitive deionization.SEPARATION AND PURIFICATION TECHNOLOGY,283.
MLA	Zhou, Jian,et al."Effective inspissation of uranium(VI) from radioactive wastewater using flow electrode capacitive deionization".SEPARATION AND PURIFICATION TECHNOLOGY 283(2022).