Geopolymer Solidification Formula of Simulated Radioactive Fluoride Liquid Waste
The geopolymer solidification technology is used to treat the radioactive fluoride liquid waste generated during the operation of thorium-based molten salt reactors. Water glass(sodium silicate aqueous solution) and fly ash were used as raw materials for geopolymer solidification of simulated radioa...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Nuclear and Radiochemistry
2025-02-01
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| Series: | He huaxue yu fangshe huaxue |
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| Online Access: | https://jnrc.xml-journal.net/cn/article/doi/10.7538/hhx.2025.47.01.0058 |
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| author | Li ZHANG Xiao-ping HE Xiao-jun YAN Xi-liang GUO Ya-hui XI Xu HAN Kai GAO Xiang QIN Li-yang FAN Chao GAO |
| author_facet | Li ZHANG Xiao-ping HE Xiao-jun YAN Xi-liang GUO Ya-hui XI Xu HAN Kai GAO Xiang QIN Li-yang FAN Chao GAO |
| author_sort | Li ZHANG |
| collection | DOAJ |
| description | The geopolymer solidification technology is used to treat the radioactive fluoride liquid waste generated during the operation of thorium-based molten salt reactors. Water glass(sodium silicate aqueous solution) and fly ash were used as raw materials for geopolymer solidification of simulated radioactive fluoride liquid waste. 16 groups of geopolymer solidification formulas were formed by designing orthogonal experiment with four factors and four levels. The geopolymer solidification forms were maintained at 60 ℃ for 28 days, and its compressive strength, immersion resistance and leaching resistance were investigated. The results show that when the water glass modulus is 1.5, the water cement ratio is 0.35 or 0.40, the alkali activator mass fraction is 30% and the F− mass fraction is 4%, the compressive strength of geopolymer solidification form is 47 MPa, and the loss of compressive strength after 90 days of immersion indeionized water at (25±5) ℃ is 13.75%, the Co2+, Sr2+ and Cs+ leaching rate on the 42nd day and the cumulative leaching fraction meet the requirements of GB 14569.1—2011. The leaching concentration of F− on the 42nd day is 2.81 mg/L, which is lower than the limit requirement of GB 5083.3—2007 (100 mg/L). It can be seen that the formula achieves effective solidification of simulated radioactive fluoride liquid waste. The effects of maintenance conditions(including temperature, humidity and time) on the performance of geopolymer solidification form can be further explored in the future, with a view to providing a proven technical route for the stabilization treatment of radioactive fluoride liquid waste. |
| format | Article |
| id | doaj-art-20886176d74b46f9ae177a9cfbbfe50d |
| institution | DOAJ |
| issn | 0253-9950 |
| language | zho |
| publishDate | 2025-02-01 |
| publisher | Editorial Office of Journal of Nuclear and Radiochemistry |
| record_format | Article |
| series | He huaxue yu fangshe huaxue |
| spelling | doaj-art-20886176d74b46f9ae177a9cfbbfe50d2025-08-20T03:11:25ZzhoEditorial Office of Journal of Nuclear and RadiochemistryHe huaxue yu fangshe huaxue0253-99502025-02-01471586710.7538/hhx.2025.47.01.00582023-104Geopolymer Solidification Formula of Simulated Radioactive Fluoride Liquid WasteLi ZHANG0Xiao-ping HE1Xiao-jun YAN2Xi-liang GUO3Ya-hui XI4Xu HAN5Kai GAO6Xiang QIN7Li-yang FAN8Chao GAO9China Institute for Radiation Protection, Taiyuan 030006, ChinaDaya Bay Nuclear Power Operations and Management Co., Ltd., Shenzhen 518000, ChinaChina Institute for Radiation Protection, Taiyuan 030006, ChinaChina Institute for Radiation Protection, Taiyuan 030006, ChinaChina Institute for Radiation Protection, Taiyuan 030006, ChinaChina Institute for Radiation Protection, Taiyuan 030006, ChinaChina Institute for Radiation Protection, Taiyuan 030006, ChinaChina Institute for Radiation Protection, Taiyuan 030006, ChinaChina Institute for Radiation Protection, Taiyuan 030006, ChinaChina Institute for Radiation Protection, Taiyuan 030006, ChinaThe geopolymer solidification technology is used to treat the radioactive fluoride liquid waste generated during the operation of thorium-based molten salt reactors. Water glass(sodium silicate aqueous solution) and fly ash were used as raw materials for geopolymer solidification of simulated radioactive fluoride liquid waste. 16 groups of geopolymer solidification formulas were formed by designing orthogonal experiment with four factors and four levels. The geopolymer solidification forms were maintained at 60 ℃ for 28 days, and its compressive strength, immersion resistance and leaching resistance were investigated. The results show that when the water glass modulus is 1.5, the water cement ratio is 0.35 or 0.40, the alkali activator mass fraction is 30% and the F− mass fraction is 4%, the compressive strength of geopolymer solidification form is 47 MPa, and the loss of compressive strength after 90 days of immersion indeionized water at (25±5) ℃ is 13.75%, the Co2+, Sr2+ and Cs+ leaching rate on the 42nd day and the cumulative leaching fraction meet the requirements of GB 14569.1—2011. The leaching concentration of F− on the 42nd day is 2.81 mg/L, which is lower than the limit requirement of GB 5083.3—2007 (100 mg/L). It can be seen that the formula achieves effective solidification of simulated radioactive fluoride liquid waste. The effects of maintenance conditions(including temperature, humidity and time) on the performance of geopolymer solidification form can be further explored in the future, with a view to providing a proven technical route for the stabilization treatment of radioactive fluoride liquid waste.https://jnrc.xml-journal.net/cn/article/doi/10.7538/hhx.2025.47.01.0058radioactive fluoride liquid wastegeopolymer solidificationfluoride ion leaching |
| spellingShingle | Li ZHANG Xiao-ping HE Xiao-jun YAN Xi-liang GUO Ya-hui XI Xu HAN Kai GAO Xiang QIN Li-yang FAN Chao GAO Geopolymer Solidification Formula of Simulated Radioactive Fluoride Liquid Waste He huaxue yu fangshe huaxue radioactive fluoride liquid waste geopolymer solidification fluoride ion leaching |
| title | Geopolymer Solidification Formula of Simulated Radioactive Fluoride Liquid Waste |
| title_full | Geopolymer Solidification Formula of Simulated Radioactive Fluoride Liquid Waste |
| title_fullStr | Geopolymer Solidification Formula of Simulated Radioactive Fluoride Liquid Waste |
| title_full_unstemmed | Geopolymer Solidification Formula of Simulated Radioactive Fluoride Liquid Waste |
| title_short | Geopolymer Solidification Formula of Simulated Radioactive Fluoride Liquid Waste |
| title_sort | geopolymer solidification formula of simulated radioactive fluoride liquid waste |
| topic | radioactive fluoride liquid waste geopolymer solidification fluoride ion leaching |
| url | https://jnrc.xml-journal.net/cn/article/doi/10.7538/hhx.2025.47.01.0058 |
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