CAS OpenIR
Separation and recovery of rare earths by in situ selective electrochemical oxidation and extraction from spent fluid catalytic cracking (FCC) catalysts
Zhou, Yujian1; Schulz, Stephen1; Lindoy, Leonard F.2; Du, Hao3; Zheng, Shili3; Wenzel, Marco1; Weigand, Jan J.1
2020-06-01
Source PublicationHYDROMETALLURGY
ISSN0304-386X
Volume194Pages:11
AbstractAn efficient method for recovering and separating Ce3+ and La3+ rare earth elements from spent fluid catalytic cracking (FCC) catalyst is described. Initially, the spent FCC catalyst was leached with 2 M HNO3 at 80 degrees C then removal of iron from the leach solution was carried out by solvent extraction with 25% (v/v) diisooctyl phosphinic acid (DiOAP) in n-octane. Extraction of the above rare earths was then undertaken from the nitric acid leach solution using an organic phase consisting of 25% (v/v) di(2-ethylhexyl) phosphoric acid (D2EHPA) and 25% (v/v) tri-n-butyl phosphate (TBP) in n-octane. Both rare earths were stripped form the organic phase using H2SO4. Separation of the Ce3+ from La3+ was then achieved by means of an in situ electrochemical oxidation coupled with a simultaneous solvent extraction process. In this, the Ce3+ was electrochemically oxidized to Ce4+ and removed from the aqueous phase by solvent extraction employing 100 mM D2EHPA in n-octane. This led to efficient separation of the above rare earths, giving rise to La3+ in high purity of up to 99.5% and Ce4+ up to 100%. The separation occurs via a single extraction step without the need for pH adjustment or for the use of additional reagents.
KeywordSolvent extraction Rare earths Electrochemistry Electrosynthesis Spent FCC catalyst
DOI10.1016/j.hydromet.2020.105300
Language英语
WOS KeywordSOLVENT-EXTRACTION ; TETRAVALENT CERIUM ; NITRIC-ACID ; ELEMENTS ; LANTHANUM(III) ; MIXTURES ; SUSTAINABILITY ; KINETICS ; CE(III) ; WASTE
Funding ProjectChina Scholarship Council (CSC)[201706430001] ; European Regional Development Found ; Free State of Saxony (ERDF-InfraPro)[GEPARD-100326379] ; German Research Foundation[WE 4621/4-1/392417756] ; German Federal Ministry of Education and Research (BMBF) within the CLIENT II -Joint Project[033R188A]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationChina Scholarship Council (CSC) ; European Regional Development Found ; Free State of Saxony (ERDF-InfraPro) ; German Research Foundation ; German Federal Ministry of Education and Research (BMBF) within the CLIENT II -Joint Project
WOS IDWOS:000537628300014
PublisherELSEVIER
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/40989
Collection中国科学院过程工程研究所
Corresponding AuthorWeigand, Jan J.
Affiliation1.Tech Univ Dresden, Fac Chem & Food Chem, D-01062 Dresden, Germany
2.Univ Sydney, Sch Chem, F11, Sydney, NSW 2006, Australia
3.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Yujian,Schulz, Stephen,Lindoy, Leonard F.,et al. Separation and recovery of rare earths by in situ selective electrochemical oxidation and extraction from spent fluid catalytic cracking (FCC) catalysts[J]. HYDROMETALLURGY,2020,194:11.
APA Zhou, Yujian.,Schulz, Stephen.,Lindoy, Leonard F..,Du, Hao.,Zheng, Shili.,...&Weigand, Jan J..(2020).Separation and recovery of rare earths by in situ selective electrochemical oxidation and extraction from spent fluid catalytic cracking (FCC) catalysts.HYDROMETALLURGY,194,11.
MLA Zhou, Yujian,et al."Separation and recovery of rare earths by in situ selective electrochemical oxidation and extraction from spent fluid catalytic cracking (FCC) catalysts".HYDROMETALLURGY 194(2020):11.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhou, Yujian]'s Articles
[Schulz, Stephen]'s Articles
[Lindoy, Leonard F.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhou, Yujian]'s Articles
[Schulz, Stephen]'s Articles
[Lindoy, Leonard F.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhou, Yujian]'s Articles
[Schulz, Stephen]'s Articles
[Lindoy, Leonard F.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.