Open Access
Molecules, volume 27, issue 2, pages 557
Separation of Rare-Earth Elements from Nitrate Solutions by Solvent Extraction Using Mixtures of Methyltri-n-octylammonium Nitrate and Tri-n-butyl Phosphate
Stepanov Sergei
1, 2
,
Hoa Nguyen
1
,
Boyarintseva Ekaterina
1
,
Boyarintsev Alexander
1, 2
,
Kostikova Galina
2
,
Publication type: Journal Article
Publication date: 2022-01-16
PubMed ID:
35056872
Organic Chemistry
Drug Discovery
Physical and Theoretical Chemistry
Pharmaceutical Science
Molecular Medicine
Analytical Chemistry
Chemistry (miscellaneous)
Abstract
The article presents data on the solvent extraction separation of rare-earth elements (REEs), such as La(III), Ce(III), Pr(III), and Nd(III), using synergic mixtures of methyltrioctylammonium nitrate (TOMANO3) with tri-n-butyl phosphate (TBP) from weakly acidic nitrate solutions. Specifically, experimental results on separation of REEs, for the pair Ce(III)/Pr(III) for quaternary mixtures of REEs (La(III), Ce(III), Pr(III), Nd(III)) and for the pair La(III)/Pr(III) for solutions containing La(III), Pr(III), and Nd(III), are presented. It was shown that effective separation for the pair Ce(III)/Pr(III) from a solution containing 219 g Ce(III)/L, 106 g La(III)/L, 20 g Pr(III)/L, 55 g Nd(III)/L, and 0.1 mol/L HNO3, was achieved using 56 steps of a multistage, counter-current solvent extraction cascade with scrubbing, at an organic-to-aqueous phase volume ratio (O/A) equal to 2/1 on the extraction section and O/A equal to 4/1 on the scrubbing section, using 3.3 mol/L solutions of the mixture TOMANO3-TBP with molar ratio 0.15:0.85 in dodecane. Separation for the pair La(III)/Pr(III) could be achieved using a solvent extraction cascade with scrubbing in 32 steps at O/A equal to 2/1 on the extraction section and O/A equal to 2.8/1 on the scrubbing section of the solvent extraction cascade from a solution containing 258 g La(III)/L, 58 g Pr(III)/L, 141 g Nd(III)/L, and 0.1 mol/L HNO3 with 3.0 mol/L solution of the mixture TOMANO3-TBP with molar ratio 0.2:0.8 in dodecane.
Citations by journals
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Applied Earth Science: Transactions of the Institute of Mining and Metallurgy
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Applied Earth Science: Transactions of the Institute of Mining and Metallurgy
1 publication, 100%
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Citations by publishers
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1
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Taylor & Francis
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Taylor & Francis
1 publication, 100%
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Stepanov S. et al. Separation of Rare-Earth Elements from Nitrate Solutions by Solvent Extraction Using Mixtures of Methyltri-n-octylammonium Nitrate and Tri-n-butyl Phosphate // Molecules. 2022. Vol. 27. No. 2. p. 557.
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Stepanov S., Hoa N., Boyarintseva E., Boyarintsev A., Kostikova G., Tsivadze A. Separation of Rare-Earth Elements from Nitrate Solutions by Solvent Extraction Using Mixtures of Methyltri-n-octylammonium Nitrate and Tri-n-butyl Phosphate // Molecules. 2022. Vol. 27. No. 2. p. 557.
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TY - JOUR
DO - 10.3390/molecules27020557
UR - https://doi.org/10.3390%2Fmolecules27020557
TI - Separation of Rare-Earth Elements from Nitrate Solutions by Solvent Extraction Using Mixtures of Methyltri-n-octylammonium Nitrate and Tri-n-butyl Phosphate
T2 - Molecules
AU - Stepanov, Sergei
AU - Boyarintseva, Ekaterina
AU - Kostikova, Galina
AU - Tsivadze, Aslan
AU - Hoa, Nguyen
AU - Boyarintsev, Alexander
PY - 2022
DA - 2022/01/16 00:00:00
PB - Multidisciplinary Digital Publishing Institute (MDPI)
SP - 557
IS - 2
VL - 27
PMID - 35056872
SN - 1420-3049
ER -
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@article{2022_Stepanov,
author = {Sergei Stepanov and Ekaterina Boyarintseva and Galina Kostikova and Aslan Tsivadze and Nguyen Hoa and Alexander Boyarintsev},
title = {Separation of Rare-Earth Elements from Nitrate Solutions by Solvent Extraction Using Mixtures of Methyltri-n-octylammonium Nitrate and Tri-n-butyl Phosphate},
journal = {Molecules},
year = {2022},
volume = {27},
publisher = {Multidisciplinary Digital Publishing Institute (MDPI)},
month = {jan},
url = {https://doi.org/10.3390%2Fmolecules27020557},
number = {2},
pages = {557},
doi = {10.3390/molecules27020557}
}
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Stepanov, Sergei, et al. “Separation of Rare-Earth Elements from Nitrate Solutions by Solvent Extraction Using Mixtures of Methyltri-n-octylammonium Nitrate and Tri-n-butyl Phosphate.” Molecules, vol. 27, no. 2, Jan. 2022, p. 557. https://doi.org/10.3390%2Fmolecules27020557.