| A comprehensive study for the potential removal of 152+154Eu radionuclides using a promising modified strontium-based MOF |
| Paper ID : 1131-ISCHU |
| Authors |
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Mohamed Attiya Mohamed * Chemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt |
| Abstract |
| This study focuses on a simple modification of a strontium-based metal-organic framework (MOF) using oxalic acid to create MTSr-OX MOF, which shows promise as a sorbent material for the removal of 152+154Eu radioisotopes. Extensive characterization of MTSr-OX MOF was conducted using diverse analytical methods, revealing its distinctive rod-like structure and a respectable BET surface area of 101.55 m2 g−1, batch sorption experiments were performed to examine the sorption performance of MTSr-OX MOF towards 152+154Eu radionuclides. Results demonstrated that MTSr-OX MOF exhibits superior efficacy in eliminating 152+154Eu, with a maximum sorption capacity of 234.72 mg g−1 observed at pH 3.5. The sorption mechanism of 152+154Eu was accurately elucidated by fitting the kinetic data to both the pseudo-second-order model and the Langmuir model. Thermodynamic analysis further revealed that the sorption process is not only endothermic but also spontaneous. Importantly, MTSr-OX MOF outperformed several other adsorbents in terms of its efficiency in sorbing 152+154Eu. Furthermore, when MTSr-OX MOF was tested on actual active waste samples, it exhibited exceptional performance in removing a wide range of radionuclides. These findings establish MTSr-OX MOF as a highly attractive solution for the efficient extraction and separation of 152+154Eu from active waste. |
| Keywords |
| Strontium-based MOF, Bi-ligand MOF, Radionuclides, Europium Removal |
| Status: Abstract Accepted (Oral Presentation) |