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Title: A Parametric Study of Operating Carbon Anodes in the Oxide Reduction Process

Abstract

A parametric study of the electrolytic reduction of uranium dioxide in molten lithium chloride – lithium oxide using carbon anodes was conducted to determine the operational parameter values necessary for high yields. Operational parameters evaluated in this study include anode and cathode current densities, anodic polarization, UO 2 batch size, and method of electrochemical control. Seven oxide reduction experiments were conducted with between 25 g and 100 g UO 2. The current density on the cathode was the critical parameter, which indicates the reduction process is kinetically controlled by cathodic reactions. High cell currents were achieved without the application of high anodic potentials by using a large anode surface area. This approach facilitates efficient reduction at high throughput without production of chlorine or other corrosive gasses.

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy
OSTI Identifier:
1478487
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Nuclear Materials; Journal Volume: 511; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
Pyroprocessing; Carbon anode; Electrolytic reduction

Citation Formats

Merwin, A., Motsegood, P., Willit, J., and Williamson, M. A. A Parametric Study of Operating Carbon Anodes in the Oxide Reduction Process. United States: N. p., 2018. Web. doi:10.1016/j.jnucmat.2018.08.044.
Merwin, A., Motsegood, P., Willit, J., & Williamson, M. A. A Parametric Study of Operating Carbon Anodes in the Oxide Reduction Process. United States. doi:10.1016/j.jnucmat.2018.08.044.
Merwin, A., Motsegood, P., Willit, J., and Williamson, M. A. Sat . "A Parametric Study of Operating Carbon Anodes in the Oxide Reduction Process". United States. doi:10.1016/j.jnucmat.2018.08.044.
@article{osti_1478487,
title = {A Parametric Study of Operating Carbon Anodes in the Oxide Reduction Process},
author = {Merwin, A. and Motsegood, P. and Willit, J. and Williamson, M. A.},
abstractNote = {A parametric study of the electrolytic reduction of uranium dioxide in molten lithium chloride – lithium oxide using carbon anodes was conducted to determine the operational parameter values necessary for high yields. Operational parameters evaluated in this study include anode and cathode current densities, anodic polarization, UO2 batch size, and method of electrochemical control. Seven oxide reduction experiments were conducted with between 25 g and 100 g UO2. The current density on the cathode was the critical parameter, which indicates the reduction process is kinetically controlled by cathodic reactions. High cell currents were achieved without the application of high anodic potentials by using a large anode surface area. This approach facilitates efficient reduction at high throughput without production of chlorine or other corrosive gasses.},
doi = {10.1016/j.jnucmat.2018.08.044},
journal = {Journal of Nuclear Materials},
number = C,
volume = 511,
place = {United States},
year = {Sat Dec 01 00:00:00 EST 2018},
month = {Sat Dec 01 00:00:00 EST 2018}
}