Extraction of REE(III), U(VI), and Th(IV) from Nitric Acid Solutions with N-Akyl(aryl)carbamoylmethylphosphine Oxides in the Presence of an Ionic Liquid

2021 ◽  
Vol 63 (2) ◽  
pp. 162-168
Author(s):  
A. N. Turanov ◽  
V. K. Karandashev ◽  
O. I. Artyushin ◽  
E. V. Sharova ◽  
V. A. Khvostikov
Keyword(s):  
Ionic Liquid ◽  
Nitric Acid ◽  
Acid Solutions ◽  
Nitric Acid Solutions ◽  
Carbamoylmethylphosphine Oxides

Effect of ionic liquid on the extraction of actinides and lanthanides with 1,2,3-triazole–modified carbamoylmethylphosphine oxide from nitric acid solutions

2017 ◽  
Vol 0 (0) ◽  
Author(s):  
Alexander N. Turanov ◽  
Vasilii K. Karandashev ◽  
Elena V. Sharova ◽  
Galina K. Genkina ◽  
Oleg I. Artyushin ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Nitric Acid ◽  
Solvent Extraction ◽  
Acid Solutions ◽  
Nitric Acid Solutions ◽  
Aqueous Nitric Acid

AbstractSolvent extraction of U(VI), Th(IV), Am(III) and lanthanides(III) from aqueous nitric acid solutions with 1,2,3-triazole–modified carbamoylmethylphosphine oxide (L) and [C

Effect of ionic liquid on the extraction of uranium with pillar[5]arene-based phosphine oxide from nitric acid solutions

2020 ◽  
Vol 108 (4) ◽  
pp. 239-247
Author(s):  
Quan Gan ◽  
Yimin Cai ◽  
Kuirong Fu ◽  
Lihua Yuan ◽  
Wen Feng
Keyword(s):  
Ionic Liquid ◽  
Nitric Acid ◽  
Phosphine Oxide ◽  
Positive Impact ◽  
Extraction System ◽  
Future Application ◽  
Acid Solutions ◽  
Back Extraction ◽  
Uranium Recovery ◽  
Nitric Acid Solutions

AbstractThe extraction of U(VI) from aqueous nitric acid solutions with pillar[5]arene-based phosphine oxide (L) and [C8mim][NTf2] ionic liquid dissolved in 1,2-dichloroethane was explored. A great positive impact in this system was observed. The effect of IL concentration in the organic phase and HNO3 concentration in the aqueous phase is considered. The distribution ratios of U(VI) were significantly enhanced upon adding a small amount of ionic liquid as compared with organic diluent. The extraction system was also examined for its ability towards extraction of lanthanides and Th4+. The results revealed higher separation factors towards UO22+ over Th4+ in the presence of ionic liquid compared with organic diluent. Other factors such as C8mim+ and NTf2− have also been considered. This extraction system has shorter equilibrium time as compared with in IL diluent. Stripping experiments showed almost quantitative back extraction of UO22+ within two stages. With high selectivity towards UO22+ and efficient back extraction, this new POP5A-ionic liquid-organic diluent system shows promise for future application of uranium recovery.

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