Eu(Ⅲ)在膨润土–砂混合物中的迁移试验研究

doi:10.13722/j.cnki.jrme.2014.s2.095

	Eu(Ⅲ)在膨润土–砂混合物中的迁移试验研究
Alternative Title	Laboratory research on migration of Eu(III) in compacted GMZ bentonite-sand mixtures
	周浪; 张虎元; 陈航; 闫铭; Zhang, Huyuan
	2014-08-15
Source Publication	岩石力学与工程学报 Impact Factor & Quartile
ISSN	1000-6915
Volume	33 Issue:S2 Pages:4163-4167
Abstract	高放废弃物长期地质处置之后,包封核素的金属罐将逐渐发生破坏,核素将会通过缓冲回填材料向外迁移。核素在缓冲回填材料中的扩散系数可作为评价处置库工程屏障阻隔核素性能的重要指标。在考虑对流、弥散及吸附作用条件下,试验采用2.0×10-5mol/L的Eu(Ⅲ)溶液作为入渗溶液,研究Eu(Ⅲ)在膨润土–砂混合物中的迁移过程,并用对流–弥散方程模拟该迁移过程。试验所得的浓度曲线符合相应条件下对流–弥散方程的解,用相应条件下方程的解得到Eu(Ⅲ)在膨润土–砂混合物试样中的有效扩散系数De=1.62×10-12~4.87×10-12m2/s,表观扩散系数Da=1.44×10-14~9.41×10-14m2/s...
Other Abstract	Radionuclides will diffuse to the outside after the overpack has been destroyed in the high level radioactive waste(HLW) disposal. The diffusion coefficient of radionuclides in buffer backfilling material plays an important role in evaluating the property of the engineering barrier of disposal repository in HLW disposal. Taking 2.0×10-5 mol/L of Eu(III) solution as influent, the migration of Eu(III) in compacted GMZ bentonite-sand mixtures is studied under the conditions of convection, diffusion and adsorption;and the migration progress is modeled by the convection-dispersion equation. The fitting curves can fit the test data very well, which confirms the validity of experimental method. The effective diffusion coefficients and apparent diffusion coefficients of Eu(III) in compacted GMZ bentonite-sand mixtures are De = 1.62×10-12-4.87×10-12 m2/s, Da = 1.44×10-14-9.41×10-14 m2/s, respectively. And then, the effect of sand ratio on apparent diffusion coefficient is discussed. The research results can be used to forecast the relationship between migration length of Eu(III) in buffer backfilling material with time and provide a reference for the design of buffer backfilling material for HLW disposal in China. ©, 2014, Academia Sinica. All right reserved.
Keyword	土力学 Eu(Ⅲ) 膨润土–砂混合物对流–弥散方程扩散系数高放废弃物 Apparent diffusion coefficient Bentonite sand mixtures Convection dispersion equations Effective diffusion coefficients Experimental methods High level radioactive waste disposal High level radioactive wastes Research results
Subject Area	Industrial Wastes ; Industrial Wastes Treatment And Disposal ; Biological Materials And Tissue Engineering ; Minerals ; Soils And Soil Mechanics ; Rare Earth Metals ; Radioactive Materials ; Chemical Operations ; Numerical Methods ; Mechanics ; Solid State Physics ; Materials Science
Publisher	SCIENCE CHINA PRESS
DOI	10.13722/j.cnki.jrme.2014.s2.095
Publication Place	Wuhan
Indexed By	EI
Language	中文
First Inst	是
Funding Project	中央高校基本科研业务费专项资金
Host of Journal	中国岩石力学与工程学会
Project Number	兰州大学中央高校基本科研业务费专项资金资助(lzujbky-2013-k03)
Funding Organization	LZU
Subtype	Article
EI ID	20151400716163
IRID	CNKI:0005602
Department	兰州大学西部灾害与环境力学教育部重点实验室
Citation statistics
Document Type	期刊论文
Identifier	https://ir.lzu.edu.cn/handle/262010/144437
Collection	土木工程与力学学院
Corresponding Author	Zhang, Huyuan
Recommended Citation GB/T 7714	周浪,张虎元,陈航,等. Eu(Ⅲ)在膨润土–砂混合物中的迁移试验研究[J]. 岩石力学与工程学报,2014,33(S2):4163-4167.
APA	周浪,张虎元,陈航,闫铭,&Zhang, Huyuan.(2014).Eu(Ⅲ)在膨润土–砂混合物中的迁移试验研究.岩石力学与工程学报,33(S2),4163-4167.
MLA	周浪,et al."Eu(Ⅲ)在膨润土–砂混合物中的迁移试验研究".岩石力学与工程学报 33.S2(2014):4163-4167.

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