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Technical Briefs

A Computational Model of the Mark-IV Electrorefiner: Phase I—Fuel Basket/Salt Interface

[+] Author and Article Information
Robert Hoover

Department of Chemical Engineering, Nuclear Engineering Program, University of Idaho-Idaho Falls, 1776 Science Center Drive, Idaho Falls, ID 83402

Supathorn Phongikaroon1

Department of Chemical Engineering, Nuclear Engineering Program, University of Idaho-Idaho Falls, 1776 Science Center Drive, Idaho Falls, ID 83402supathor@uidaho.edu

Shelly Li, Michael Simpson, Tae-Sic Yoo

Pyroprocessing Technology Department, Idaho National Laboratory, P. O. Box 1625, Idaho Falls, ID 83415

1

Corresponding author.

J. Eng. Gas Turbines Power 131(5), 054503 (Jun 05, 2009) (4 pages) doi:10.1115/1.3078776 History: Received August 05, 2008; Revised August 11, 2008; Published June 05, 2009

Spent driver fuel from the Experimental Breeder Reactor-II is currently being treated in the Mark-IV electrorefiner in the Fuel Conditioning Facility at Idaho National Laboratory. The modeling approach to be presented here has been developed to help understand the effect of different parameters on the dynamics of this system. The first phase of this new modeling approach focuses on the fuel basket/salt interface involving the transport of various species found in the driver fuels (e.g., uranium and zirconium). This approach minimizes the guessed parameters to only one, the exchange current density (i0). U3+ and Zr4+ were the only species used for the current study. The result reveals that most of the total cell current is used for the oxidation of uranium, with little being used by zirconium. The dimensionless approach shows that the total potential is a strong function of i0 and a weak function of wt% of uranium in the salt system for initiation processes.

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Copyright © 2009 by American Society of Mechanical Engineers
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Figures

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Figure 1

Focus area of this study

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Figure 2

New modeling approach organization

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Figure 3

U3+ and Zr4+ current plots

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Figure 4

Dimensionless surface overpotential of U3+

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Figure 5

Dimensionless U3+ and Zr4+ current plots

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Figure 6

Total anode potential plot

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