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Separation of V from alkaline solution containing Cr using acidified primary amine N1923 with the addition of trisodium citrate
Sun, Pan1,2; Huang, Kun1; Wang, Xiaoqin1,2; Song, Weiyuan1,2; Zheng, Han1; Liu, Huizhou1
2017-05-31
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume179Pages:504-512
AbstractExtraction and separation of V(V) and Cr(VI) in the alkaline solution obtained from the Sub-molten Salt Method to treat the high chromium vanadium slags has been a thorny problem in the past decades. In this work, a new liquid-liquid solvent extraction strategy was proposed by using acidified primary amine N1923 (denoted as A-N1923) to separate V(V) from alkaline solution containing Cr(VI) and AI(III). It was indicated that co-extraction of Cr(VI) and Al(III) with V(V) can be avoided with the addition of trisodium citrate previously into the feed solutions. The influence from various factors, including the concentration of trisodium citrate, the initial aqueous pH value, concentration of A-N1923 in the organic phase, diluents in the organic phase, and the initial concentration ratio of V(V) to Cr(VI) in alkaline solutions, on the separation of V(V), Cr(VI) and Al(III) were investigated. The extraction loading capacity of V(V) in the organic phase could reach 6.67 g/L at 298 K. Al(III) in the organic phase can be stripped selectively using 0.18 mol/L trisodium citrate solution, and then V(V) can be recovered by 1.0 mol/L NaNO3 solutions. The regeneration and reusability of the organic phases after stripping were discussed. The present work highlights a novel approach to separate and recover V(V) from alkaline leaching solution containing Cr(VI) and Al(III), especially being applicable for those strongly alkaline solution produced by treating the high chromium vanadium slags using the Sub-molten Salt Method. (C) 2017 Elsevier B.V. All rights reserved.
KeywordVanadium Chromium Separation Alkaline Solutions Solvent Extraction
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.seppur.2017.02.035
Indexed BySCI
Language英语
WOS KeywordVANADIUM-BEARING TITANOMAGNETITE ; SELECTIVE EXTRACTION ; CHROMIUM ; SLAG ; KINETICS ; RECOVERY ; TITANIUM ; EXCHANGE ; CR(VI) ; FIBER
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationKey Project of Chinese National Programs for Fundamental Research and Development (973 Program)(2013CB632602) ; National Natural Science Foundation of China(51574213 ; 51074150)
WOS IDWOS:000397688200054
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22076
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, Key Lab Green Proc & Engn, Beijing 100190, PR, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Sun, Pan,Huang, Kun,Wang, Xiaoqin,et al. Separation of V from alkaline solution containing Cr using acidified primary amine N1923 with the addition of trisodium citrate[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2017,179:504-512.
APA Sun, Pan,Huang, Kun,Wang, Xiaoqin,Song, Weiyuan,Zheng, Han,&Liu, Huizhou.(2017).Separation of V from alkaline solution containing Cr using acidified primary amine N1923 with the addition of trisodium citrate.SEPARATION AND PURIFICATION TECHNOLOGY,179,504-512.
MLA Sun, Pan,et al."Separation of V from alkaline solution containing Cr using acidified primary amine N1923 with the addition of trisodium citrate".SEPARATION AND PURIFICATION TECHNOLOGY 179(2017):504-512.
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