School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, PR China.
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China.
J Colloid Interface Sci. 2017 Jul 1;497:385-392. doi: 10.1016/j.jcis.2017.02.062. Epub 2017 Feb 28.
A 2-picolylamine functionalized poly(styrene-co-maleic anhydride) resin was synthesized and characterized by FT-IR, elemental analysis, SEM and XPS. To recover uranium from aqueous solution, the influence factors such as pH values, contact time, temperature and initial uranium concentration were optimized. Adsorption kinetics fitted well with the pseudo-second-order model, whereas adsorption isotherm matched well with the Langmuir isothermal adsorption model, with the maximum sorption capacity of 518.39mgg at pH 5.30 and 298K. The uptake of uranium could be implied in 0.01M coexisted ions environment. Besides, the resin could be regenerated by 0.1M HNO and repeatedly utilized in circles. The study proved that the resin has potential application prospects for disposal of uranium(VI).
一种 2-皮考啉基胺功能化的聚（苯乙烯-共-马来酸酐）树脂通过傅里叶变换红外光谱、元素分析、扫描电子显微镜和 X 射线光电子能谱进行了合成和表征。为了从水溶液中回收铀，优化了 pH 值、接触时间、温度和初始铀浓度等影响因素。吸附动力学很好地符合拟二级模型，而吸附等温线很好地符合朗缪尔等温吸附模型，在 pH 值为 5.30 和 298K 时，最大吸附容量为 518.39mgg。铀的摄取可以在共存离子环境 0.01M 下进行。此外，该树脂可以用 0.1M HNO 再生，并在循环中重复使用。该研究证明，该树脂在处理六价铀方面具有潜在的应用前景。
