Experimental and modelling study of ruthenium extraction with tri-n-butylphosphate in the purex process

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• 作者：P. Moeyaert^a ; M. Miguirditchian^a ; ^{manuel.miguirditchian@cea.fr} ; M. Masson^a ; B. Dinh^a ; X. Hé ; rè ; s^a ; S. De Sio^b ; C. Sorel^a
• 关键词：Ruthenium ; TBP ; Solvent extraction ; Mechanism ; Modelling
• 刊名：Chemical Engineering Science
• 出版年：2017
• 出版时间：2 February 2017
• 年：2017
• 卷：158
• 期：Complete
• 页码：580-586
• 全文大小：1148 K
• 卷排序：158

文摘

Extraction of ruthenium from nitric acid media by TBP/TPH was studied at lab-scale. A thermodynamic model based on Mikulin equation and Sergievskii-Dannus model was developed. Good agreement between experimental and calculated distribution ratios was obtained. Mathematical model was tested successfully during a counter-current PUREX hot test performed in mixer-settlers. The model is not yet able to simulate the retention of ruthenium in the irradiated organic solvent.