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| Adsorption of U(Ⅵ) with LSU-1 Ion Exchange Resin |
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Received:May 31, 2021
Revised:June 09, 2021
Accepted:June 11, 2021
Published Online:July 29, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2021.08.012 |
| KeyWord:LSU-1; ion exchange resin; CO2+O2 leaching; adsorption |
| Author | Institution |
| HUA Rong |
东华理工大学 核资源与环境国家重点实验室 |
| LI Jia-hui |
东华理工大学 核资源与环境国家重点实验室 |
| LI Shuang |
东华理工大学 核资源与环境国家重点实验室 |
| FENG Jia-hui |
东华理工大学 核资源与环境国家重点实验室 |
| WANG Ying-cai |
东华理工大学 核资源与环境国家重点实验室 |
| CHEN Hao-liang |
东华理工大学 核资源与环境国家重点实验室 |
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| Abstract: |
| LSU-1 ion exchange resin was used to adsorb U(Ⅵ) from CO2+O2 leaching solution. The results show that LSU-1resin can effectively adsorb U(Ⅵ) under neutral condition. When pH value is 7 and initial concentration of U(Ⅵ) is 300 mg/L, adsorption capacity is 141.42 mg/mL. The adsorption process conforms to Langmuir adsorption isotherm model (R2=0.998) and quasi second order kinetic model (R2=0.991). Dynamic experiment shows that adsorption capacity of LSU-1resin is 140.52 mg/mL, which is consistent with the results of static adsorption experiment. Mixed solution of 0.5 mol/L NaCl and 0.5 mol/L Na2CO3 can successfully elute uranium, which is suitable for CO2+O2 uranium extraction process. |
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