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Selective extraction and deep separation of V(V) and Cr(VI) in the leaching solution of chromium-bearing vanadium slag with primary amine LK-N21
Alternative TitleSep. Purif. Technol.
Ning, Pengge1,3; Lin, Xiao1,3; Cao, Hongbin1,2,3; Zhang, Yi2,3
2014-11-24
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume137Issue:novPages:109-115
AbstractIn this report the extraction of V(V) and Cr(VI) from a synthetic feed solution and real leaching solution of the chromium-bearing vanadium slag (V-Cr slag) using primary amine LK-N21 was studied. Detailed fundamental research work was conducted to investigate the primary amine extracting V(V) and Cr(VI). The mechanism and the difference between the two metals of extraction were studied and the experimental results were compared with previously published data. The optimum technological parameters for the separation of two metals were determined including: pH value in feed solution, phase ratio, mixing time, as well as others. The results showed that primary amine LK-N21 can extract V(V) selectively by hydrogen bonding association. Cr(VI) competed V(V) to combine with the primary amine, and the concentration of Cr(VI) decided the percentage extraction of V(V) and Cr(VI). Primary amine LK-N21 extracted more than 90% of V(V) which resulted in over 90% of Cr(VI) left in the leaching solution of the V-Cr slag in the optimal conditions. Based on the results of experiments, V(V) and Cr(VI) can be separated with a high degree of selectivity. (C) 2014 Published by Elsevier B.V.; In this report the extraction of V(V) and Cr(VI) from a synthetic feed solution and real leaching solution of the chromium-bearing vanadium slag (V-Cr slag) using primary amine LK-N21 was studied. Detailed fundamental research work was conducted to investigate the primary amine extracting V(V) and Cr(VI). The mechanism and the difference between the two metals of extraction were studied and the experimental results were compared with previously published data. The optimum technological parameters for the separation of two metals were determined including: pH value in feed solution, phase ratio, mixing time, as well as others. The results showed that primary amine LK-N21 can extract V(V) selectively by hydrogen bonding association. Cr(VI) competed V(V) to combine with the primary amine, and the concentration of Cr(VI) decided the percentage extraction of V(V) and Cr(VI). Primary amine LK-N21 extracted more than 90% of V(V) which resulted in over 90% of Cr(VI) left in the leaching solution of the V-Cr slag in the optimal conditions. Based on the results of experiments, V(V) and Cr(VI) can be separated with a high degree of selectivity. (C) 2014 Published by Elsevier B.V.
KeywordSeparation Of v(v) And Cr(Vi) Primary Amine Lk-n21 Solvent Extraction Hydrogen Bond Association
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.seppur.2014.08.033
URL查看原文
Indexed BySCI
Language英语
WOS KeywordSOLVENT-EXTRACTION ; ION-EXCHANGE ; AQUEOUS-SOLUTIONS ; RECOVERY ; REMOVAL
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000345181500014
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11810
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Res Ctr Proc Pollut Control Beijing, Inst Proc Engn, Beijing 100190, Peoples R China
2.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Ning, Pengge,Lin, Xiao,Cao, Hongbin,et al. Selective extraction and deep separation of V(V) and Cr(VI) in the leaching solution of chromium-bearing vanadium slag with primary amine LK-N21[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2014,137(nov):109-115.
APA Ning, Pengge,Lin, Xiao,Cao, Hongbin,&Zhang, Yi.(2014).Selective extraction and deep separation of V(V) and Cr(VI) in the leaching solution of chromium-bearing vanadium slag with primary amine LK-N21.SEPARATION AND PURIFICATION TECHNOLOGY,137(nov),109-115.
MLA Ning, Pengge,et al."Selective extraction and deep separation of V(V) and Cr(VI) in the leaching solution of chromium-bearing vanadium slag with primary amine LK-N21".SEPARATION AND PURIFICATION TECHNOLOGY 137.nov(2014):109-115.
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