Effect of fluorine on stabilization/solidification of radioactive fluoride liquid waste in magnesium potassium phosphate cement
| Autor: | Qin Qiang, Wang Shuai, Peng Honghua, Liu Xueyang, Yanbo Qiao, Zhenghua Qian, Shi Liuqing |
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| Rok vydání: | 2018 |
| Předmět: |
Cement
Magnesium Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health chemistry.chemical_element 010403 inorganic & nuclear chemistry 01 natural sciences Pollution 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound Nuclear Energy and Engineering chemistry Potassium phosphate Slurry Fluorine Radiology Nuclear Medicine and imaging Leaching (metallurgy) Mass fraction Fluoride Spectroscopy Nuclear chemistry |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 319:393-399 |
| ISSN: | 1588-2780 0236-5731 |
| DOI: | 10.1007/s10967-018-6339-6 |
| Popis: | This paper investigated the effect of fluorine mass fraction on magnesium potassium phosphate cement (MKPC) stabilization/solidification (S/S). The solidified object was a simulated fluid containing Co2+, Sr2+, Cs+ and F−. The results showed when the fluorine mass fraction increased, the setting time of the MKPC slurry extended. Under the same conditions, the 28-day compressive strength of the MKPC solidified forms reduced, and the freeze–thaw resistance enhanced. When the fluorine mass fraction was more than 6 wt%, a new product (MgF2) appeared and caused the structure to become evacuated. Meanwhile, leaching concentration of the researched ions increased, especially Cs2+ and F−. When the fluorine mass fraction of the MKPC solidified forms was 12 wt%, a very small amount of wagnerite was observed. |
| Databáze: | OpenAIRE |
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