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中文摘要：
研究了以尿素作沉淀剂，十二烷基硫酸钠作表面活性剂，采用均匀沉淀法制备纳米ZnO并采用静态试验法研究纳米ZnO吸附溶液中U（Ⅵ）的性能，考察了溶液pH、固液质量体积比、反应温度、接触时间和U（Ⅵ）初始质量浓度对纳米ZnO吸附溶液中U（Ⅵ）的影响。结果表明：纳米ZnO对溶液中的U（Ⅵ）有较好的吸附效果；室温下，纳米ZnO吸附U（Ⅵ）的最佳条件为溶液pH-6．0，接触时间80min，固液质量体积比0．5g／L，U（Ⅵ）初始质量浓度30mg／L；最佳条件下，纳米ZnO对U（Ⅵ）的吸附率达（96．32±1．47）％，吸附量为（57．79±0．89）mg／g，其吸附行为符合Freundlich和Temkin等温吸附模型，吸附机制为不均匀多层吸附为主、表面单层吸附为辅。
英文摘要：
Using CO（NH2）2 as precipitator and twelve prepared by homo-precipitator method. The ZnO was alkyl Na2SO4 as surfactant,nano scale-ZnO was used to adsorb U（Ⅵ） in aqueous solution. The effects of solution pH, contacting time, temperature, solid-to-liquid ratio and initial concentration of U（Ⅵ） in the aqueous solution on adsorbing of U（Ⅵ） were examined, and the adsorption isotherms were analyzed. The results show that the nano scale-ZnO has very good adsorbing effect for U（Ⅵ ）. At room temperature（298 K）,the best adsorption conditions are the solution pH of 6.0,the contact time of 80 min,the solid-to-liquid ratio of 0.5 g/L,the initial U（Ⅵ） concentration of 30 mg/L,the removal rate and adsorption capacity for U （ Ⅵ ） reach （96. a2 ± 1. 47） % and （57. 7 ± 9 0. 89） mg/g, respectively. Adsorption isotherms follow with both Freundlich and Temkin, so the adsorption reactions mainly belong to heterogeneous multilayer adsorption and monolayer adsorption.
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