電解シミュレーション技術の開発 : 使用済み酸化物燃料の乾式再処理プロセスの解析 Development of the SIMULATION TECHNOLOGY for the PYROCHEMICAL Process of SPENT NUCLEAR FUELS
The simulation code for the pyrochemical processing of spent nuclear fuels was developed to analyze experimental data, to predict experimental results, and to propose adequate conditions and processes. The <u>S</u>imulation code for <u>P</u>yrochemical <u>R</u>eprocessing (SPR) is based on calculations of chemical equilibrium and electrochemical reactions. The code also includes the calculations of the current-potential distribution between the electrodes. Some calculations were made to simulate the experimental results on the electro-codeposition process of UO<sub>2</sub> and PuO<sub>2</sub>. The phenomena of the redox reactions between Pu<sup>4+</sup> and Pu<sup>3+</sup> ions and those between Fe<sup>3+</sup> and Fe<sup>2+</sup> ions were theoretically analyzed; these redox reactions cause the low current efficiency in the electrocodeposition process. The calculated current-potential distribution around the cathode corresponds to the observed distribution of the oxide deposited on the cathode.
- 電気化学および工業物理化学 : denki kagaku
電気化学および工業物理化学 : denki kagaku 75(7), 528-534, 2007-07-05
The Electrochemical Society of Japan