From trace to pure: Recovery of scandium from the waste acid of titanium pigment production by solvent extraction

doi:10.1016/j.psep.2018.10.027

	From trace to pure: Recovery of scandium from the waste acid of titanium pigment production by solvent extraction
	Qiu, Hongbin 1,2; Wang, Mengliang1,3 ; Xie, Yingming 2; Song, Jianfeng 1; Huang, Tao1,3 ; Li, Xue-Mei 1; He, Tao1
	2019-01
发表期刊	PROCESS SAFETY AND ENVIRONMENTAL PROTECTION (IF:6.9[JCR-2023],7.0[5-Year])
ISSN	0957-5820
卷号	121 页码:118-124
发表状态	已发表
DOI	10.1016/j.psep.2018.10.027
摘要	The waste acid from the titanium pigment production process contains scandium ion at low concentration. The waste is thus an extra resource for scandium. To recover the trace scandium from the waste acid, a process combining pre-enrichment and purification steps via solvent extraction using the extractant of bis-(2-ethylhexyl) phosphoric acid was reported. In the pre-enrichment step, to obtain high extraction efficiency at low extractant consumption, the volume fraction of bis-(2-ethylhexyl) phosphoric (as extractant), tributyl phosphate (as synergistic agent) and the ratio of aqueous-to-organic extractant (A/O) were optimized. Afterwards, to remove the main impurities from the enriched liquor, the further purification step was investigated. Herein, to improve the separation between scandium and titanium, (-Ti-O-)(2+) was transformed to [TiO(H2O2)](2+) by addition of H2O2 into the pre-enriched liquor prior to extraction. The co-extracted metal ions were subsequently scrubbed with 3 H2SO4/6% H2O2 by multi-stage cross-current. Further, the extractant was reused for four cycles and the extraction efficiency for scandium was found to be stable after the third cycle. Based on current results, a process to recover the trace scandium from real titanium white waste acid was introduced on lab scale as a proof of principle. (C) 2018 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
关键词	Scandium Titanium white waste acid Solvent extraction D2EHPA [TiO(H2O2)](2+)
收录类别	EI ; SCIE ; SCI
语种	英语
资助项目	National Natural Science Fund China[U1507117] ; National Natural Science Fund China[21676290]
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000462955700013
出版者	ELSEVIER SCIENCE BV
EI入藏号	20184406024963
EI主题词	Efficiency ; Metal ions ; Purification ; Recovery ; Removal ; Scandium ; Solvents ; Titanium ; Titanium dioxide
EI分类号	Metallurgy:531.1 ; Titanium and Alloys:542.3 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Inorganic Compounds:804.2 ; Production Engineering:913.1
WOS关键词	SALT LAKE BRINE ; LEACHING SOLUTION ; FERROUS SULFATE ; OXIDE INDUSTRY ; SEPARATION ; MAGNESIUM ; EXCHANGE ; LITHIUM
原始文献类型	Article
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/28737
专题	物质科学与技术学院_硕士生物质科学与技术学院_特聘教授组_何涛组物质科学与技术学院_博士生
通讯作者	Song, Jianfeng; He, Tao
作者单位	1.Chinese Acad Sci, Shanghai Adv Res Inst, Lab Membrane Mat & Separat Technol, Shanghai, Peoples R China 2.Univ Shanghai Sci & Technol, Sch Energy & Power Engn, Shanghai 200093, Peoples R China 3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
推荐引用方式 GB/T 7714	Qiu, Hongbin,Wang, Mengliang,Xie, Yingming,et al. From trace to pure: Recovery of scandium from the waste acid of titanium pigment production by solvent extraction[J]. PROCESS SAFETY AND ENVIRONMENTAL PROTECTION,2019,121:118-124.
APA	Qiu, Hongbin.,Wang, Mengliang.,Xie, Yingming.,Song, Jianfeng.,Huang, Tao.,...&He, Tao.(2019).From trace to pure: Recovery of scandium from the waste acid of titanium pigment production by solvent extraction.PROCESS SAFETY AND ENVIRONMENTAL PROTECTION,121,118-124.
MLA	Qiu, Hongbin,et al."From trace to pure: Recovery of scandium from the waste acid of titanium pigment production by solvent extraction".PROCESS SAFETY AND ENVIRONMENTAL PROTECTION 121(2019):118-124.