Separation of V(V) and Cr(VI) in leaching solution using annular centrifugal contactors

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	Separation of V(V) and Cr(VI) in leaching solution using annular centrifugal contactors
	Jing, Xiaohua 1,2; Ning, Pengge 1; Cao, Hongbin 1; Sun, Zhi 1; Wang, Jianyou 2
刊名	CHEMICAL ENGINEERING JOURNAL
	2017-05-01
卷号	315 页码:373-381
关键词	Annular centrifugal contactors Primary amine LK-N21 Separation factor V(V) and Cr(VI) Multistage countercurrent extraction
ISSN号	1385-8947
英文摘要	The effective V(V) and Cr(VI) separation is very difficult due to their similarity in physiochemical properties. In this research, almost completely separation of V(V) and Cr(VI) with primary amine N1923 was firstly demonstrated by employing multistage countercurrent extraction (MCE) with annular centrifugal contactors (ACCs). The optimum operation conditions of single-stage extraction with ACC were determined by systematic experiments, and best conditions of the rotor speed, the flow rate and the flow ratio of organic phase to aqueous phase were obtained. The loaded-organic phase can be reused for extraction process after stripping with ammonia/sodium hydroxide. Vanadium, in the leaching/aqueous solution with the initial pH of 6.1, was reached to extraction equilibrium by three-stage countercurrent extraction with ACCs. V(V) and Cr(VI) were separated through 21 stages of countercurrent extraction with ACCs. 95.1% of vanadium and almost none of chromium were extracted, with the separation factor approaching infinity. Through the mechanism of hydrogen bond association and different species of two metals in the leaching/aqueous solution, an in-depth analysis to correlate the results obtained and the chemical reactions with ACCs has been made in order to establish a firm conclusion with aim of the guidance in industrial application.(C) 2017 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	DROP-SIZE DISTRIBUTIONS ; BEARING VANADIUM SLAG ; SOLVENT-EXTRACTION ; ENANTIOSELECTIVE EXTRACTION ; ACID ENANTIOMERS ; PRIMARY AMINE ; CHROMIUM ; SIMULATION ; PERFORMANCE ; REDUCTION
收录类别	SCI
语种	英语
WOS记录号	WOS:000395212300038
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/22812]
专题	过程工程研究所_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, Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China 2.Nankai Univ, Coll Environm Sci & Engn, Tianjin 300350, Peoples R China
推荐引用方式 GB/T 7714	Jing, Xiaohua,Ning, Pengge,Cao, Hongbin,et al. Separation of V(V) and Cr(VI) in leaching solution using annular centrifugal contactors[J]. CHEMICAL ENGINEERING JOURNAL,2017,315:373-381.
APA	Jing, Xiaohua,Ning, Pengge,Cao, Hongbin,Sun, Zhi,&Wang, Jianyou.(2017).Separation of V(V) and Cr(VI) in leaching solution using annular centrifugal contactors.CHEMICAL ENGINEERING JOURNAL,315,373-381.
MLA	Jing, Xiaohua,et al."Separation of V(V) and Cr(VI) in leaching solution using annular centrifugal contactors".CHEMICAL ENGINEERING JOURNAL 315(2017):373-381.