Preparation and related properties of geopolymer solidified uranium tailings bodies with various fibers and fiber content
| العنوان: | Preparation and related properties of geopolymer solidified uranium tailings bodies with various fibers and fiber content |
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| المؤلفون: | Yuying Hao, Zhe Wang, Yong Liu, Changshou Hong, Fuliang Jiang, Biao Tan, Haonan Wu, Chao Zhang |
| المصدر: | Environmental Science and Pollution Research. 29:20603-20616 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Materials science, Health, Toxicology and Mutagenesis, chemistry.chemical_element, Coal Ash, Extraction and Processing Industry, Diffusion, Radiation Protection, Waste Management, Uranium tailings, Soil Pollutants, Radioactive, Environmental Chemistry, Fiber, Silicates, Metallurgy, General Medicine, Uranium, Pollution, Tailings, Compressive strength, chemistry, Radon, Hazardous Waste Sites, Radioactive Waste, Fly ash, Basalt fiber, Leaching (metallurgy) |
| الوصف: | Uranium tailing ponds are a potential major source of radioactive pollution. Solidification treatment can control the diffusion and migration of radioactive elements in uranium tailings to safeguard the surrounding ecological environment. A literature review and field investigation were conducted in this study prior to fabricating 11 solidified uranium tailing samples with different proportions of PVA fiber, basalt fiber, metakaolin, and fly ash, and the weight percentage of uranium tailings in the solidified body is 61.11%. The pore structure, volume resistivity, compressive strength, radon exhalation rate variations, and U(VI) leaching performance of the samples were analyzed. The pore size of the solidified samples is mainly between 1 and 50 nm, the pore volume is between 2.461 and 5.852 × 10−2 cm3/g, the volume resistivity is between 1020.00 and 1937.33 Ω·m, and the compressive strength is between 20.61 and 36.91 MPa. The radon exhalation rate is between 0.0397 and 0.0853 Bq·m−2·s−1. The cumulative leaching fraction of U(VI) is between 2.095 and 2.869 × 10−2 cm, and the uranium immobilization rate is between 83.46 and 85.97%. Based on a comprehensive analysis of the physical and mechanical properties, radon exhalation rates, and U(VI) leaching performance of the solidified samples, the basalt fiber is found to outperform PVA fiber overall. The solidification effect is optimal when 0.6% basalt fiber is added. |
| تدمد: | 1614-7499 0944-1344 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b765178045bc271ce26a5f06754b92a https://doi.org/10.1007/s11356-021-17176-0 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....4b765178045bc271ce26a5f06754b92a |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 16147499 09441344 |
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