期刊
JOURNAL OF MEMBRANE SCIENCE
卷 298, 期 1-2, 页码 169-174出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2007.04.015
关键词
TODGA; liquid membrane; actinide partitioning; nuclear waste management; radiation stability
The facilitated transport of actinide ions and fission products, viz. Am(III), Pu(IV), Np(VI), U(VI), Cs(I), Sr(II), Eu(III), and Tc(VII) from nitric acid solution was investigated using a supported liquid membrane (SLM) containing N,N,M,AP-tetraoctyl-3-oxapentane diamide (TODGA) in n-dodecane as the mobile carrier. Influence of the concentration of neodymium, uranium and iron on the transport of Am(III) was also studied. The transport of Arn(III), Eu(III) and Sr(II) from simulated high level waste (SHLW) solution was also investigated. Quantitative transport of Am(III) and Eu(III) was observed from SHLW within 15 h in distilled water used as the receiver phase when only similar to 15% transport of Sr(II) was observed. The radiation stability of the liquid membrane was investigated after an irradiation dose upto 1.8 MGy. Different physical properties, such as viscosity, interfacial tension and refractive index of the irradiated TODGA sample are also reported and their role in transport behaviour is discussed. (c) 2007 Elsevier B.V. All rights reserved.
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