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 (EA) for the co-sequestration process were obtained. Based on EA 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.