中文摘要：

为进行稀溶液中铀的浓缩，以硫酸铀酰为模板、二乙基烯丙基胺为功能单体，在水中采用自组装分子印迹技术制备了硫酸铀酰印迹离子交换树脂。对树脂合成条件进行了优化，研究了pH值对吸附量的影响、分子印迹聚合物MIPs-4的等温吸附与吸附动力学、柱内吸附与淋洗曲线等树脂识别性能。结果表明：印迹树脂对硫酸铀酰的吸附性能比非印迹树脂好，可以在pH=1-6范围内应用，并在pH为2左右时吸附能力最强。MIPs-4树脂的吸附等温线为“优吸”型，吸附在约3h达到平衡。当Co=0、125mg·mL^-1时，Kd=0、249L·g^-1。吸附液p（U）=1．0mg·mL^-1、接触时间4min进行的柱内试验得出MIPs-4的穿透体积、穿透容量和饱和容量分别为柱内树脂的床体积（BV）的22倍、21．6mg·mL^-1和36．2mg·mL^-1。以0．05mol·L^-1 H2SO4＋1.0mol·L^-1 NaCl为淋洗液时，淋洗体积仅4BV，流出液中最大铀浓度达到17.6mg·mL^-1。印迹树脂的吸附和解吸性能好，可应用于低浓度铀的浓缩及含铀废水的处理。

英文摘要：

In order to concentrate uranium from its dilute solution, the uranyl sulphate imprinted ion exchange resins were synthesized in water by using self-assembling imprinting technology, during which, the uranyl sulphate was used as template and the diethyl allylamine as functional monomer. The performances of prepared imprinted resins, such as the pH influence on adsorption capacity, the isothermal adsorption and adsorption dynamics, the adsorption and elution curves of the molecular imprinting polymer MIPs-4 in the ion exchange resin column, were studied and the synthetic conditions of imprinted resins were optimized. Experimental results show that the imprinted resins have better recognition characteristics than that of un-imprinted resins and can be used in a wider pH range of 1 to 6, while its adsorptive ability is the highest when pH=2. Among the imprinted resins synthesized, the MIPs-4 is the best, its adsorption isotherm is classy, its adsorption equilibrium can be reached after 3h, and when the uranium concentration of the original solution is 0.125 mg.mLl, its distribution coefficient is 0.249 L·g^-1. The experiments of adsorption in column show, when 1.0 mg·mL^-1 uranium aqua is served as influent and the contact time is 4 min, the breakthrough volume of the MIPs-4 resin is 22 times the bed volume of the resin （BV）, and the breakthrough capacity and saturated capacity are 21.6 mg·mL^-1 and 36.2 mg·mL^-1, respectively. When 0.05 mg·mL^-1 H2SO4＋1.0 mol·L^-1 NaCl is used as effluent, the elution volume is only about 4.0BV and the maximum uranium concentration of effluent reaches 17.6 mg·mL^-1. Since the MIPs-4 resin has good adsorption and elution properties, it is suitable to be used to concentrate the dilute uranium aqua and to dispose the wastewater containing uranium.