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
发表期刊CHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
卷号307期号:JAN页码:518-525
摘要

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.

关键词Electrochemical Advanced Oxidation Process Vanadium Dissolution Reactive Oxygen Species Electro-fenton-like Alkaline Media Hydroxyl Radical
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.cej.2016.08.115
收录类别SCI
语种英语
关键词[WOS]OXYGEN REDUCTION REACTION ; ELECTRO-FENTON PROCESS ; BEARING VANADIUM SLAG ; CR(III) OXIDATION ; EFFICIENT EXTRACTION ; CARBON NANOTUBES ; KOH SOLUTIONS ; DEGRADATION ; CHROMIUM ; SYSTEM
WOS研究方向Engineering
WOS类目Engineering, Environmental ; Engineering, Chemical
项目资助者National Basic Research Program of China (973 Program)(2013CB632601 ; National Natural Science Foundation of China(51274178 ; Hundred Talents Program ; 2013CB632605) ; 51274179 ; 51604253)
WOS记录号WOS:000387298200055
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21650
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.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
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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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