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

Zhou, Jian1,2; Zhang, Xinyuan2,3; Zhang, Yingzi1,2; Wang, De1,2; Zhou, Hongjian2,3; Li, Jiaxing1,2
2022-01-15
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Corresponding AuthorZhou, Hongjian(hjzhou@issp.ac.cn) ; Li, Jiaxing(lijx@ipp.ac.cn)
AbstractThe 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 & nbsp;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)& nbsp;were achieved in 360 mg L-1 & nbsp;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.
KeywordFlow electrode Inspissation Radioactive waste Electrosorption Uranium (VI)
DOI10.1016/j.seppur.2021.120172
WOS KeywordCARBON ; DESALINATION ; PERFORMANCE ; RECOVERY ; ADSORPTION ; EXTRACTION ; MECHANISM ; SEAWATER ; U(VI) ; UO22+
Indexed BySCI
Language英语
Funding ProjectNational 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
Funding OrganizationNational 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
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000780913200005
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/128532
Collection中国科学院合肥物质科学研究院
Corresponding AuthorZhou, Hongjian; Li, Jiaxing
Affiliation1.Chinese Acad Sci, Inst Plasma Phys, CAS Key Lab Photovolta & Energy Conservat Mat, HFIPS, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China
3.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
First Author AffilicationChinese Academy of Sciences, Institute of Plasma Physics, Hefei 230031, Anhui, Peoples R China
Corresponding Author AffilicationChinese Academy of Sciences, Institute of Plasma Physics, Hefei 230031, Anhui, Peoples R China
Recommended Citation
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).
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