In this study, the synergistic adsorption behavior of palladium [Pd(II)], molybdenum [Mo(VI)], and zirconium [Zr(IV)] in simulated high-level liquid waste was systematically investigated based on various factors, such as the contact time, concentration of nitric acid, adsorption amount, and temperature using a silica-based adsorbent impregnated with N,N′-dimethyl-N,N′-di-n-hexyl-thiodiglycolamide (Crea) and 2, 2′, 2′ -nitrilotris[N,N-bis(2-ethylhexyl)acetamide] (TAMIA-EH). The adsorption rates of Pd(II), Mo(VI), and Zr(IV) in this synergistic adsorption system were high; thus, equilibrium states could be obtained in only 1 h with high uptake percentages of more than 90%. The adsorption abilities of Pd(II), Mo(VI), and Zr(IV) were only slightly affected by variation in the concentration of nitric acid in the range of 0.1–5 M and solution temperature in the range of 288–313 K. Selective stripping of the adsorbed Re(VII), Pd(II), Zr(IV), and Mo(VI) was successfully achieved under elution with 5 M HNO₃, 0.2 M Tu (pH 1), 50 mM DTPA (pH 2), and 50 mM DTPA dissolved in 0.5 M Na₂CO₃ (pH 11) solutions using the chromatography method. In addition, the adsorption performance in solid-state was studied using the particle-induced X-ray emission (PIXE) method; the obtained results were in good agreement with the results obtained via column separation.

在这项研究中，基于多种因素，系统地研究了钯[Pd（II）]，钼[Mo（VI）]和锆[Zr（IV）]在模拟高放废液中的协同吸附行为。N，N'-二甲基-N，N'-二-正己基硫代二甘醇酰胺（Crea）和2，2 '浸渍的二氧化硅基吸附剂的接触时间，硝酸浓度，吸附量和温度2'-硝苯并[ N，N-双（2-乙基己基）乙酰胺]（TAMIA-EH）。在这种协同吸附系统中，Pd（II），Mo（VI）和Zr（IV）的吸附率很高。因此，仅在1小时内即可获得平衡状态，且摄取率高达90％以上。Pd（II），Mo（VI）和Zr（IV）的吸附能力仅受硝酸浓度在0.1-5 M范围内和溶液温度288-313 K范围内变化的影响吸附的。选择性汽提的Re（VII），加入Pd（II），锆（IV），和Mo（VI）被成功下洗脱用5M HNO实现₃，0.2M涂（pH值为1），50 mM的DTPA（pH值2），并将50 mM DTPA溶解在0.5 M Na ₂ CO _3中（pH 11）溶液使用色谱法。此外，使用粒子诱导X射线发射（PIXE）方法研究了固态吸附性能。获得的结果与通过柱分离获得的结果非常吻合。