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Enhanced anodic dissolution of cupronickel alloy scraps by electro-generated reactive oxygen species in acid media
Wang, Yunting1; Xue, Yudong2,3; Zhang, Chunhui1
2019-10-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume806Pages:106-112
AbstractRecycling of the cupronickel alloy scraps not only solves environmental related issues but also realizes the extraction of valuable metals and saves consumption of primary ore resources. Oxidative dissolution is a critical step for the recycling of valuable metal from the alloy scraps. In order to improve the dissolution kinetics and efficiency, a novel integrated electrochemical dissolution strategy for the sustainable recycling of the cupronickel alloy scraps was first developed, where the in-situ electro-generated reactive oxygen species (ROS) were employed as the indirect oxidative mediator. Much higher dissolved concentration of Ni, Zn, and Cu was reached by the present integrated strategy than that of the direct anodic dissolution process, which is attributed to the in-situ produced oxidative H2O2 and center dot OH via oxygen reduction reaction and electro-Fenton-like reaction, respectively. Moreover, the large quantity of ROS can be electro-generated, thus achieving high dissolved concentration, under the optimum condition with the preset potential of 0.3 V (vs. Ag/AgCl) or current density of 2.54 mA/cm(2), respectively. This novel synergistic strategy may serve as a promising and cost-effective technique for the alloy scraps recycle and valuable metal extraction. (C) 2019 Elsevier B.V. All rights reserved.
KeywordAnodic dissolution Electrochemical oxidation Reactive oxygen species Electro-Fenton-like Alloy scraps
DOI10.1016/j.jallcom.2019.07.276
Language英语
WOS KeywordWASTE-WATER TREATMENT ; HYDROGEN-PEROXIDE ; COPPER ; OXIDATION ; FENTON ; RECOVERY ; REDUCTION ; CORROSION ; CATALYST ; V2O3
Funding ProjectResearch Fund of Major Science and Technology Program for Water Pollution Control and Treatment, China[2017ZX07402001]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationResearch Fund of Major Science and Technology Program for Water Pollution Control and Treatment, China
WOS IDWOS:000485039800013
PublisherELSEVIER SCIENCE SA
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30819
Collection中国科学院过程工程研究所
Corresponding AuthorXue, Yudong; Zhang, Chunhui
Affiliation1.China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
2.Chinese Acad Sci, CAS Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yunting,Xue, Yudong,Zhang, Chunhui. Enhanced anodic dissolution of cupronickel alloy scraps by electro-generated reactive oxygen species in acid media[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,806:106-112.
APA Wang, Yunting,Xue, Yudong,&Zhang, Chunhui.(2019).Enhanced anodic dissolution of cupronickel alloy scraps by electro-generated reactive oxygen species in acid media.JOURNAL OF ALLOYS AND COMPOUNDS,806,106-112.
MLA Wang, Yunting,et al."Enhanced anodic dissolution of cupronickel alloy scraps by electro-generated reactive oxygen species in acid media".JOURNAL OF ALLOYS AND COMPOUNDS 806(2019):106-112.
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