Modeling Solute Thermokinetics in LiCI-KCI Molten Salt for Nuclear Waste Separation

Morgan, Dane; Eapen, Jacob

doi:10.2172/1097006

Cited by 1 publication

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References 99 publications

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“…Considering the limitation of experiment, such as the limited availability of actinides and the intense radiation, simulation method could be treated as a supplement. In fact, it has been successfully applied to calculate the diffusion coefficient of elements in molten salts [15] [16]. However, they stopped at self-diffusion coefficient calculation, which is the diffusivity without chemical gradient.…”

Section: Introductionmentioning

confidence: 99%

Chemical diffusion coefficient calculation of U3+ in LiCl-KCl molten salt

Zhou

Zhang

2016

Progress in Nuclear Energy

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Self-diffusion coefficient denotes the intrinsic diffusion of elements without the chemical gradient; generally, it is different from the chemical diffusion coefficient that is used in Fick's law. However, the self-diffusion coefficient can be converted to the chemical diffusion coefficient by considering the concentration-dependent activity coefficient of solute. In this study, the multiple time origins method was applied to calculate the self-diffusion coefficient of U 3+ in LiCl-KCl eutectic salt at different temperatures and concentrations. The chemical diffusion coefficient was obtained based on the calculated results and thermodynamic theory. Calculated results show that self-diffusion coefficient decreases with concentration however chemical diffusion coefficient indicates to change little initially but appears to increase followed by decrease later within the concentration range of 0 to 3 at%.

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Section: Introductionmentioning

confidence: 99%