|
| Static Adsorption and Chromatographic Column Separation of Samarium and Gadolinium in Solution by LN Resin |
|
Received:January 02, 2024
Revised:January 16, 2024
Accepted:January 17, 2024
Published Online:May 01, 2024
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2024.06.011 |
| KeyWord:LN resin; samarium; gadolinium; adsorption; chromatography column |
| Author | Institution |
| GE Ruitong |
中国原子能科学研究院 放射化学研究所 |
| LI Bin |
中国原子能科学研究院 放射化学研究所 |
| LI Fengfeng |
中国原子能科学研究院 放射化学研究所 |
| XU Jitang |
中国原子能科学研究院 放射化学研究所 |
| LI Junle |
中国原子能科学研究院 放射化学研究所 |
|
| Hits: 1351 |
| Download times: 1323 |
| Abstract: |
| The adsorption performance of LN resin for Sm(Ⅲ) and Gd(Ⅲ) were explored. The effects of time, acidity, and temperature on the resin adsorption capacity were investigated. The adsorption kinetics and thermodynamics of the adsorption process were studied. The thermodynamic parameters ?H,?S and ?G were measured. The results show that the adsorption of Sm(Ⅲ) and Gd(Ⅲ) on LN resin reach equilibrium after 2 minutes at 298 K. The lower the acidity, the greater the equilibrium adsorption capacity, and the equilibrium adsorption capacity rises gradually with the increase of temperature. The separation experiment of samarium and gadolinium was carried out using LN resin chromatography column. Sm(Ⅲ) was eluted at an acidity of 0.75 mol/L HNO3, while Gd(Ⅲ) was eluted at an acidity of 1.0 mol/L HNO3. The test results of different elution flow rates on column separation efficiency show that the best separation effect is achieved at a flow rate of 0.53 mL/min. |
| Close |