Solvation extraction by amines and synergistic solvation extraction with neutral or acidic extractants
Abstract
Primary amine can be used to separate vanadium(V) from chromium(VI) effectively in weakly alkaline solution by solvation mechanisms, as shown by earlier work. Separation of rhenium(VII) from molybdenum, tungstenfVI) from molybdenun, etc. can be very effectively carried out by using primary amine mixed with neutral donor reagents by synergistic solvation extraction. Experimental results indicate the presence of solvation extraction in addition to the ordinary anion exchange extraction with amines as solvent. Iron present in the sulfuric acid leaching solution as impurity gets extracted into the organic phase and is difficult to strip. Several mixed solvent systems with an amine and a neutral donor cxtractant have been developed for iron removal. These have common feature that the iron in the organic phase can be stripped with dilute sulfuric acid.
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The best separation and extraction performance has been achieved by a mixture of acidic and solvating extractants.
“However, the best separation and extraction performance has been achieved by a mixture of acidic and solvating extractants (Chen and Wu, 2000).”
From A review of technologies for direct lithium extraction from low Li+ concentration aqueous solutions (2022) · cites this paper as Chen and Wu, 2000
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A review of technologies for direct lithium extraction from low Li+ concentration aqueous solutions
Murphy, O., & Haji, M. N. (2022) · Frontiers in Chemical Engineering · doi:10.3389/fceng.2022.1008680 · Cited by 157 · see citing works
“However, the best separation and extraction performance has been achieved by a mixture of acidic and solvating extractants (Chen and Wu, 2000).”
Background
- Authors
- (CHIA-YUNG) CHEN, J., & WU, Z.
- Affiliations
- Chinese Academy of Sciences (CN)
- Venue
- Mineral Processing and Extractive Metallurgy Review
- Publisher
- Informa UK Limited
- Published
- 2000-09
- Volume
- 21
- Issue
- 1-5
- Pages
- 49-87
- ISSN
- 0882-7508 (ISSN-L)
- 1547-7401
- OpenAlex
- W2016362227
- Cited by
- 9
- References
- 0
- Citations by year
- 2025: 3 · 2024: 1 · 2022: 1 · 2017: 1
- FWCI
- 0.00
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Mineral Processing and Extractive Metallurgy Review (publishedVersion)
- Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Extraction and Separation Processes
- Physical Sciences › Chemistry › Inorganic Chemistry › Radioactive element chemistry and processing
- Physical Sciences › Engineering › Biomedical Engineering › Metal Extraction and Bioleaching
- Keywords
- primary amines, iron removal, mixed solvents
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