Kinetic and thermodynamic studies on the interaction of europium(III) and phosphate with γ-Al₂O₃

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• 作者：Huan Xu ; Ge Liu ; Guang Li ; Xuemei Ren…
• 关键词：Mutual effects ; Thermodynamic ; γ ; Al2O3 ; Europium(III) ; Phosphate
• 刊名：Journal of Radioanalytical and Nuclear Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：311
• 期：1
• 页码：395-408
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Nuclear Chemistry; Physical Chemistry; Nuclear Physics, Heavy Ions, Hadrons; Diagnostic Radiology; Inorganic Chemistry;
• 出版者：Springer Netherlands
• ISSN：1588-2780
• 卷排序：311

文摘

The temperature effect on the co-sequestration process receives little attention. Herein, kinetic and thermodynamic studies on the co-sequestration of Eu(III) and phosphate by γ-Al₂O₃ were investigated by batch experiments. The standard thermodynamic parameters (∆H0, ∆S0, and ∆G0), the activation thermodynamic parameters (∆H#, ∆S#, and ∆G#), and the activation energy (E_A) for the co-sequestration process were obtained. Based on E_A and ∆S# values, Eu(III) and phosphate co-sequestration is controlled by chemical reactions on γ-Al₂O₃ and by an associative mechanism. This work highlights the temperature effect on the co-sequestration of Eu(III) and phosphate in a geological environment.