2021 Fiscal Year Final Research Report
Adsorption and separation behaviors of Cs-137 from high level liquid waste by a novel porous covalent organic frameworks (COFs) based adsorbent
| Project/Area Number |
20K22320
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0202:Condensed matter physics, plasma science, nuclear engineering, earth resources engineering, energy engineering, and related fields
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| Research Institution | Tohoku University |
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Principal Investigator |
Wu Hao 東北大学, 工学研究科, 助教 (70881796)
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| Project Period (FY) |
2020-09-11 – 2022-03-31
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| Keywords | 共有結合性有機構造体 / セシウム |
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| Outline of Final Research Achievements |
An acid-stable 2D covalent organic framework (COF) was synthesized by a reversible Schiff base reaction and the following irreversible enol-keto tautomerism. Then, a novel composite was prepared by impregnating the 1,3-[(2,4-Diethylheptylethoxy)oxy]-2,4-crown-6-calix[4]arene(calix[4]arene-R14) analogues and their molecule modifiers into the pores of the prepared COFs support. Next, the adsorption performances of the prepared adsorbent for selective separation of cesium (Cs) from simulated high-level liquid waste and simulated radioactive contaminated wastewater were investigated under the effect of contact time, adsorption capacity, acid concentration etc.
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| Free Research Field |
原子力化学
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| Academic Significance and Societal Importance of the Research Achievements |
Cesium (Cs) as one of the heat-generating fission products of a nuclear power plant has a long half-life of around 30 years and is also a strong gamma (γ) radiation emitter. The method developed in this study provides a new viewpoint for the efficient recovery of Cs from nitric acid solution.
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