Efficient separation of europium by solvent extraction using bis(2-ethylhexyl) phosphate

Efficient separation of europium (Eu) from aqueous solution is pivotal for the sustainable development of nuclear industry and rare earth industry. In this work, bis(2-ethylhexyl) phosphate (P204) was employed to separate Eu(III) by solvent extraction method using kerosene as diluent. The extraction...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2024, Vol.333 (6), p.2691-2696
Main Authors: Wang, Yi, Yang, Jiajia, Sui, Jixue, Wang, Lan, Tang, Jia, Yang, Yu, Lu, Yunyun, Dai, Shuang, Cao, Qi
Format: Article
Language:English
Subjects:
Aqueous solutions
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Europium
Hadrons
Heavy Ions
Industrial development
Infrared analysis
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Phase ratio
Physical Chemistry
Separation
Solvent extraction
Sustainable development
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Summary:Efficient separation of europium (Eu) from aqueous solution is pivotal for the sustainable development of nuclear industry and rare earth industry. In this work, bis(2-ethylhexyl) phosphate (P204) was employed to separate Eu(III) by solvent extraction method using kerosene as diluent. The extraction equilibrium could reach within 30-min contact time. The extraction ratio enhanced as the increased O:A phase ratio, extractant concentration, and temperature. However, the HCl introduction caused its clear descent. Combined with the slope method and FT-IR analysis, extraction mechanism could be unveiled, which is the coordination between P=O double bond and Eu(III) ions in a proportion of 3:1.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-024-09490-x