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Cr(III)-induced electrochemical advanced oxidation processes for the V2O3 dissolution in alkaline media
Xue, Yudong1,2; Zheng, Shili1; Du, Hao1; Zhang, Yi1; Jin, Wei1
2017
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume307Issue:JANPages:518-525
Abstract

Oxidative dissolution is a critical step for the environmental remediation of heavy metal oxides in industrial solid wastes. In order to overcome the drawbacks of high energy consumption and severe environmental pollution in conventional treatments, a novel electrochemical advanced oxidation process was first reported for the V2O3 oxidative extraction in alkaline media. Multi-walled carbon nanotubes modified electrode was employed to produce hydrogen peroxide via two-electron-pathway oxygen reduction reaction, following by the Cr(III)-induced activation process to generate highly oxidative (OH)-O-center dot radical. The oxidative dissolution ratio was affected by the alkaline concentration, and the V(III) was completely transferred within 160 min treatment at the pH of 13. Subsequently, the vanadium and chromium were selectively recovered by a solvent extraction method. Electron spin resonance spectroscopy and quenching reagents were performed to probe the reaction mechanism and main reactive species, indicating that the heterogeneous electro-catalytic oxidative dissolution process was mainly attributed to the in-situ generated (OH)-O-center dot. Furthermore, the long-term stability test illustrates the excellent durability of the MWCNTs modified electrode. Therefore, this novel method offers a promising solid waste treatment approach, and new insight on the electrochemical advanced oxidation process in alkaline media. (C) 2016 Elsevier B.V. All rights reserved.

KeywordElectrochemical Advanced Oxidation Process Vanadium Dissolution Reactive Oxygen Species Electro-fenton-like Alkaline Media Hydroxyl Radical
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.cej.2016.08.115
Indexed BySCI
Language英语
WOS KeywordOXYGEN REDUCTION REACTION ; ELECTRO-FENTON PROCESS ; BEARING VANADIUM SLAG ; CR(III) OXIDATION ; EFFICIENT EXTRACTION ; CARBON NANOTUBES ; KOH SOLUTIONS ; DEGRADATION ; CHROMIUM ; SYSTEM
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Basic Research Program of China (973 Program)(2013CB632601 ; National Natural Science Foundation of China(51274178 ; Hundred Talents Program ; 2013CB632605) ; 51274179 ; 51604253)
WOS IDWOS:000387298200055
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21650
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Xue, Yudong,Zheng, Shili,Du, Hao,et al. Cr(III)-induced electrochemical advanced oxidation processes for the V2O3 dissolution in alkaline media[J]. CHEMICAL ENGINEERING JOURNAL,2017,307(JAN):518-525.
APA Xue, Yudong,Zheng, Shili,Du, Hao,Zhang, Yi,&Jin, Wei.(2017).Cr(III)-induced electrochemical advanced oxidation processes for the V2O3 dissolution in alkaline media.CHEMICAL ENGINEERING JOURNAL,307(JAN),518-525.
MLA Xue, Yudong,et al."Cr(III)-induced electrochemical advanced oxidation processes for the V2O3 dissolution in alkaline media".CHEMICAL ENGINEERING JOURNAL 307.JAN(2017):518-525.
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