Immobilization of simulated radioactive fluoride waste in phosphate glass

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	Immobilization of simulated radioactive fluoride waste in phosphate glass
	Sun, YP; Xia, XB; Qiao, YB; Bao, LM; Ma, HJ; Liu, XY; Qian, ZH
刊名	SCIENCE CHINA-MATERIALS
	2016
卷号	59 期号:4 页码:279-286
关键词	radioactive waste alkali fluoride iron phosphate glass sodium aluminophosphate glass
ISSN号	2095-8226
通讯作者	Xia, XB (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
英文摘要	Radioactive alkali fluoride salts are generated during the operation of molten salt reactors (MSRs) and reprocessing of their spent fuel, and appear in the form of fluidity granule, or powder. In order to prevent the radionuclides from being released into the environment (especially, via exposure to water), it is necessary to develop a new technology for the temporary storage or final disposal of wastes containing radioactive fluorides. The immobilization of alkali fluoride wastes in phosphate glasses has been proposed. In this study, iron phosphate (IP) glasses and sodium aluminophosphate (NaAlP) glasses were evaluated for the immobilization of simulated radioactive fluoride wastes. IP and NaAlP glass matrixes were mixed with simulated wastes and reacted in air at temperatures in the range of 950-1200 degrees C. A high waste loading was obtained in the experiment. The properties of the waste forms were characterized by X-ray diffraction and Raman spectroscopy. The latter indicated that IP glass contains less Q(2) without Q(3) (2 and 3 represent the number of bridging oxygens on a PO4 tetrahedron), and it is concluded that IP glass is more stable than NaAlP glass. Leaching tests were performed in deionized water by using the product consistency test A (PCT-A method), and the result shows that the leaching resistance of IP waste forms is better than that of NaAlP waste forms. This study demonstrates the potential of IP glass for the stabilization and immobilization of radioactive fluoride wastes from MSRs.
收录类别	SCI
语种	英语
WOS记录号	WOS:000383104100005
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/26536]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Sun, YP,Xia, XB,Qiao, YB,et al. Immobilization of simulated radioactive fluoride waste in phosphate glass[J]. SCIENCE CHINA-MATERIALS,2016,59(4):279-286.
APA	Sun, YP.,Xia, XB.,Qiao, YB.,Bao, LM.,Ma, HJ.,...&Qian, ZH.(2016).Immobilization of simulated radioactive fluoride waste in phosphate glass.SCIENCE CHINA-MATERIALS,59(4),279-286.
MLA	Sun, YP,et al."Immobilization of simulated radioactive fluoride waste in phosphate glass".SCIENCE CHINA-MATERIALS 59.4(2016):279-286.