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| Content Provider | Springer Nature Link |
|---|---|
| Author | Mareš, Kamil Vavřinec Šebesta, Ferdinand |
| Copyright Year | 2014 |
| Abstract | Three production routes of the preparation of a solid extractant based on tributylphosphate (TBP) embedded in the polyacrylonitrile matrix (PAN) have been studied. The method of direct PAN coagulation with TBP was found to be not viable due to the significant TBP solubility in the coagulation bath. The most suitable PAN-TBP solid extractant was prepared by the well-known impregnation method of ready-made neat PAN beads. The kinetics of uranium extraction from 3 mol L$^{−1}$ HNO$_{3}$, the effect of nitrate and nitric acids concentrations on the value of weight distribution coefficients D $_{g}$ as well as the uranium “extraction isotherm” were determined for this material. Uranium extraction was rather fast, approximately 1 h was sufficient for the equilibrium achievement. Capacity for the uranium uptake, measured in batch experiments on PAN-TBP for 0.048 mol L$^{−1}$ of uranium in 3 mol L$^{−1}$ nitric acid, was found to be q = 0.363 mmol g$^{−1}$ (58 % of the theoretical capacity). It was concluded that PAN-TBP material behaves like TBP in liquid–liquid extraction. Extraction capacity determined in column experiments was lower (by about 23 %) than expected from the “extraction isotherm” due to the TBP leaching out of the column. The thus prepared material is therefore not very suitable for multicycle extraction and stripping and can be used once, particularly for the analytical purposes. |
| Starting Page | 341 |
| Ending Page | 345 |
| Page Count | 5 |
| File Format | |
| ISSN | 02365731 |
| Journal | Journal of Radioanalytical and Nuclear Chemistry |
| Volume Number | 302 |
| Issue Number | 1 |
| e-ISSN | 15882780 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2014-07-06 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Tributylphosphate TBP Polyacrylonitrile PAN Extraction chromatography Nuclear Chemistry Physical Chemistry Nuclear Physics, Heavy Ions, Hadrons Diagnostic Radiology Inorganic Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Pollution Health, Toxicology and Mutagenesis Radiology, Nuclear Medicine and Imaging Analytical Chemistry Public Health, Environmental and Occupational Health Nuclear Energy and Engineering |
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