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Xue Y, Lv H, Gao J, Liang Y, Li T, Zheng Y, Wang G, Yan Y, Ma F. Decontamination of uranium-containing radioactive waste from stainless steel surfaces using NaOH-based molten salts. Environ Sci Pollut Res Int 2023; 30:64771-64777. [PMID: 37099110 DOI: 10.1007/s11356-023-27210-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 04/20/2023] [Indexed: 05/11/2023]
Abstract
Herein, we report a new strategy for the rapid removal of uranium-containing contaminants from metal surfaces, and it relies on decontaminants made of NaOH-based molten salts. The addition of Na2CO3 and NaCl to NaOH exhibited superior decontamination performance, with a decontamination rate of 93.8% within 12 min, outdoing the performance of the single NaOH molten salt. The experimental results demonstrated that the synergistic effects between CO32- and Cl- promoted the corrosion efficiency of the molten salt on the substrate, which accelerated the decontamination rate. Additionally, benefiting from the optimization of the experimental conditions by the response surface method (RSM), the decontamination efficiency was improved to 94.9%. Notably, it also showed remarkable results in the decontamination of specimens containing different uranium oxides at low and high levels of radioactivity. This technology is promising for broadening the path in rapid decontamination of radioactive contaminants on metal surfaces.
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Affiliation(s)
- Yun Xue
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, People's Republic of China
- Yantai Research Institute, Harbin Engineering University, Yantai, 264006, Shandong, People's Republic of China
| | - Huitao Lv
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, People's Republic of China
| | - Jianzhang Gao
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, People's Republic of China
| | - Yi Liang
- Yantai Research Institute, Harbin Engineering University, Yantai, 264006, Shandong, People's Republic of China
| | - Tianyu Li
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, People's Republic of China
| | - Yanghai Zheng
- Yantai Research Institute, Harbin Engineering University, Yantai, 264006, Shandong, People's Republic of China
| | - Guixiang Wang
- Yantai Research Institute, Harbin Engineering University, Yantai, 264006, Shandong, People's Republic of China
| | - Yongde Yan
- Yantai Research Institute, Harbin Engineering University, Yantai, 264006, Shandong, People's Republic of China
| | - Fuqiu Ma
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, People's Republic of China.
- Yantai Research Institute, Harbin Engineering University, Yantai, 264006, Shandong, People's Republic of China.
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Barakan S, Aghazadeh V. Rhenium extraction from pressure oxidative leaching solution of molybdenite concentrate using hydrophobic deep eutectic solvents. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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