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The crud formation during the long-term operation of the V(V) and Cr(VI) extraction
Ning, Pengge; Cao, Hongbin1; Lin, Xiao; Zhang, Yi
2013-05-01
Source PublicationHYDROMETALLURGY
Volume137Issue:0Pages:133-139
AbstractThe roles of the emulsifiers in the crud formation during the long-term operation during the vanadium and chromium extraction were studied. The crud produced in the long-term operation of extraction was determined by GC-MS for organic phase and XPS for solid particles. The results indicate that the redox reaction occurs between Cr(VI) and organic compounds, and the reduction products of Cr(VI) induce more stable emulsion. Additionally, the roles of other types of solid particles and organic compounds confirmed before were carried out by thermodynamic calculation and experiments combined with discussion. Three-dimensional network structure of silica and precipitation of various cations act as the major incentives to stimulate the emulsion. Whereafter, crystallization of sodium sulfate and the reduction of Cr(VI) take place at the surface of emulsion droplet, and the organic compounds are prone to be adsorbed by these fine solids which subsequently consolidate the newly formed surface of droplet. The interactions between emulsion droplets were calculated according to the extended DLVO theory. The comprehensive stabilization mechanisms were also proposed, including the composite interfacial film mechanism, the steric hindrance mechanism and the double electric layer mechanism. (C) 2013 Elsevier B.V. All rights reserved.
KeywordExtraction v(v) And Cr(Vi) Interfacial Crud Stabilization Mechanism
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Language英语
WOS KeywordSOLVENT-EXTRACTION ; STABILIZED EMULSIONS ; CHROMIUM ; VANADIUM ; PARTICLES ; WATER
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000322926600019
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13764
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Res Ctr Proc Pollut Control, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Ning, Pengge,Cao, Hongbin,Lin, Xiao,et al. The crud formation during the long-term operation of the V(V) and Cr(VI) extraction[J]. HYDROMETALLURGY,2013,137(0):133-139.
APA Ning, Pengge,Cao, Hongbin,Lin, Xiao,&Zhang, Yi.(2013).The crud formation during the long-term operation of the V(V) and Cr(VI) extraction.HYDROMETALLURGY,137(0),133-139.
MLA Ning, Pengge,et al."The crud formation during the long-term operation of the V(V) and Cr(VI) extraction".HYDROMETALLURGY 137.0(2013):133-139.
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