Selective Recovery of Europium and Yttrium Ions with Cyanex 272-Polyacrylonitrile Nanofibers
| Autor: | María Ángel García, Diego Morillo Martín, Mirko Faccini, Leslie Diaz Jalaff |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Lanthanide
Langmuir Materials science General Chemical Engineering Metal ions in aqueous solution Inorganic chemistry chemistry.chemical_element rare earth elements 02 engineering and technology 010501 environmental sciences 01 natural sciences Article lcsh:Chemistry chemistry.chemical_compound Adsorption nanofibers metal recovery polyacrylonitrile General Materials Science europium electrospinning 0105 earth and related environmental sciences Cyanex 272 Polyacrylonitrile Sorption Yttrium water treatment 021001 nanoscience & nanotechnology yttrium chemistry lcsh:QD1-999 0210 nano-technology Europium |
| Zdroj: | Nanomaterials Nanomaterials, Vol 9, Iss 12, p 1648 (2019) Volume 9 Issue 12 |
| ISSN: | 2079-4991 |
| Popis: | Rare earth elements (REEs), which include lanthanides as yttrium and europium became crucial in the last decade in many sectors like automotive, energy, and defense. They contribute to the increment efficiency and performance of different products. In this paper nanofiber membranes have been successfully applied for the selective recovery of Eu(III) and Y(III) from aqueous solutions. Polyacrylonitrile (PAN) electrospun nanofibers were impregnated with a commercial organic extractant, Cyanex 272, in order to increase their affinity to rare earth metals ions. The coated nanofibers were characterized by SEM, ATR-FTIR, and TGA. Firstly, the adsorption of Eu(III) and Y(III) were evaluated in batch mode. Experimental data showed that the adsorption of Y(III) and Eu(III) corresponds to pseudo-second order model, with Langmuir sorption model being the best fit for both target ions. The results demonstrated that the adsorption capacity was high, showing a maximum capacity of 200 and 400 mg/g for Y(III) and Eu(III), respectively. Additionally, the presence of interfering ions does not show significative effects in the adsorption process. Finally, experiments in continuous mode indicated that the adsorption of the target elements is close to 100%, showing that PAN-272 is a promising material for the recovery of earth metal ions. |
| Databáze: | OpenAIRE |
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