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Synergistic extraction of gallium from sulfate solution
Alternative TitleChin. J. Chem. Eng.
Deng, T; Huang, LJ; Fu, L
2002-02-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume10Issue:1Pages:112-115
AbstractA novel extractant mixture, di-2-ethylhexyl phosphate (DEHPA) plus HX, was proposed and tested for recovering gallium from sulfate solution. It was found that the extraction capacity of DEPHA for gallium from sulfate solution could be enhanced significantly due to the synergistic effect of acidic extractant HX. Gallium extraction is negligible below pH 0 and highly sensitive to pH of aqueous phase in the range from 0 to 1, and satisfactory extraction can be gained at pH>1. More than 96% Ga extraction was obtained using 15% DEHPA plus 2% HX. Although Fe (III) was found to be extracted preferentially to Ga (III), effective extraction of Ga (III) was possible by reducing ferric to the ferrous state prior to extraction. A loaded organic phase containing 0.48 g(.)L(-1) Ga could be produced from solution of 0.12 g(.)L(-1) Ga at A/O ratio of 4 : 1 via three mixer-settler operation stages. Gallium was stripped quantitatively from the loaded organic phase with 1.5 mol(.)L(-1) of sulfuric acid.; A novel extractant mixture, di-2-ethylhexyl phosphate (DEHPA) plus HX, was proposed and tested for recovering gallium from sulfate solution. It was found that the extraction capacity of DEPHA for gallium from sulfate solution could be enhanced significantly due to the synergistic effect of acidic extractant HX. Gallium extraction is negligible below pH 0 and highly sensitive to pH of aqueous phase in the range from 0 to 1, and satisfactory extraction can be gained at pH>1. More than 96% Ga extraction was obtained using 15% DEHPA plus 2% HX. Although Fe (III) was found to be extracted preferentially to Ga (III), effective extraction of Ga (III) was possible by reducing ferric to the ferrous state prior to extraction. A loaded organic phase containing 0.48 g(.)L(-1) Ga could be produced from solution of 0.12 g(.)L(-1) Ga at A/O ratio of 4 : 1 via three mixer-settler operation stages. Gallium was stripped quantitatively from the loaded organic phase with 1.5 mol(.)L(-1) of sulfuric acid.
KeywordGallium Synergistic Extraction Dehpa Sulfate Solution
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordSOLVENT-EXTRACTION
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000174602500017
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5590
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Deng, T,Huang, LJ,Fu, L. Synergistic extraction of gallium from sulfate solution[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2002,10(1):112-115.
APA Deng, T,Huang, LJ,&Fu, L.(2002).Synergistic extraction of gallium from sulfate solution.CHINESE JOURNAL OF CHEMICAL ENGINEERING,10(1),112-115.
MLA Deng, T,et al."Synergistic extraction of gallium from sulfate solution".CHINESE JOURNAL OF CHEMICAL ENGINEERING 10.1(2002):112-115.
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