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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium High Temperature Electrochemistry III
Presentation Title Optimized Voltammetry Methods for Measuring Concentration of Multiple Rare Earths and Actinides in Molten LiCl-KCl
Author(s) Michael F. Simpson, Devin Rappleye, Chao Zhang
On-Site Speaker (Planned) Michael F. Simpson
Abstract Scope Real time measurement of the concentration of actinides and lanthanides in molten LiCl-KCl is needed for process control and safeguards of nuclear fuel electrorefiners. Currently, nuclear facilities operating electrorefiners rely upon sampling and destructive analysis, which results in very slow response times. Several voltammetry methods have been investigated recently by our group to analyze multiple metals simultaneously in the eutectic LiCl-KCl commonly used in electrorefiners. Keys to minimizing measurement error include electrochemical method development, electrode design and preparation, and data analysis. Results of studies to optimize normal pulse voltammetry parameters will be discussed in addition to electrode preparation/conditioning and models to correlate measured current to concentration. This work is primarily performed with LiCl-KCl-UCl3-MgCl2 mixtures, where Mg serves as a surrogate for Pu. In addition to the development of concentration calibration curves, ways to utilize this technology for safeguarding nuclear fuel pyroprocessing systems will be discussed.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


Effects of Oxide Precursor Preparation Parameters on the Electrochemical Reduction of Tantalum Pentoxide in Calcium Chloride Melt
Electrochemical and Thermodynamic Properties of Gadolinium Chloride in LiCl-KCl Eutectic Salt
Electrochemical Behavior of Sn/SnCl2 Cathode in Na | NaCl-AlCl3-SnCl2 | Sn Cell
Electrochemical Deposition of Barium into Liquid Bismuth from BaCl2-LiCl-CaCl2-NaCl Electrolyte
Electrochemical Synthesis of TaC in Molten Salt
Electrochemical Techniques for Nuclear Safeguards in Molten Salt
Electrochemistry in Molten 2LiF-BeF2 Salt for the Fluoride Salt-Cooled High Temperature Reactor Applications
Impurity Removal from Titanium Oxycarbide
Initial Operation of Kg-Scale Electrolytic Reduction and Salt Distillation Equipment for the Pyroprocessing of Uranium Oxide in a Hot Cell
Molten Flux Design for Solid Oxide Membrane Based Electrolysis of Si from Silica
Optimized Voltammetry Methods for Measuring Concentration of Multiple Rare Earths and Actinides in Molten LiCl-KCl
Thermal Imaging Furnace Technique for Ultra-high Temperature Electrochemical Measurements
Thermochemical Properties of Barium-Bismuth Alloys Determined by Emf Measurements
Thorium and Uranium Electrodeposition from Molten LiCl-KCl onto Alpha Spectroscopy Semiconductor Detector Surface
Zirconium Management in the Mk-IV Electrorefiner

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