By the batch method, the effects of contact time, pH, ionic strength, initial concentration, temperature on the sorption of Re(VII) and Se(IV) were investigated. Our results illustrated that Re(VII) and Se(IV) sorption was well described by the pseudo-second-order kinetic model, as well as by Freundlich model. This suggests chemical reaction as a rate-controlling step on the surface with 0.51 and 2.24 mg/g maximum sorption capacity at pH 7.0. The pH has little effect on Re(VII) adsorption, While it significantly affects the Se(IV) sorption. The sorption capacity of Re(VII) and Se(IV) decreased with increasing NaCl concentration. And the adsorption processes of Re(VII) and Se(IV) were endothermic spontaneous processes. What’s more, our results also show that the sorption of Re(VII) and Se(IV) in clay rock will not interfere with each other under various conditions. Additionally, the adsorption capacity of Se(IV) in clay is significantly increased under acidic conditions when organic acids in the solution, but not influenced under neutral and alkaline conditions.

采用间歇法研究了接触时间、pH、离子强度、初始浓度、温度对Re(VII)和Se(IV)吸附的影响。我们的结果表明，准二级动力学模型和 Freundlich 模型很好地描述了 Re(VII) 和 Se(IV) 吸附。这表明化学反应是表面上的速率控制步骤，在 pH 7.0 下具有 0.51 和 2.24 mg/g 的最大吸附容量。pH对Re(VII)的吸附影响不大，而对Se(IV)的吸附有显着影响。Re(VII)和Se(IV)的吸附容量随着NaCl浓度的增加而降低。Re(VII)和Se(IV)的吸附过程是吸热自发过程。更重要的是，我们的研究结果还表明，在各种条件下，粘土岩石中 Re(VII) 和 Se(IV) 的吸附不会相互干扰。此外，在酸性条件下，有机酸溶液对粘土中 Se(IV) 的吸附能力显着增加，但在中性和碱性条件下不受影响。