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投稿时间：2021-05-31 修订日期：2021-06-09 录用日期：2021-06-11 网络发布日期：2021-07-29
投稿时间：2021-05-31 修订日期：2021-06-09 录用日期：2021-06-11 网络发布日期：2021-07-29
中文摘要: 采用LSU-1离子交换树脂从CO2+O2地浸液中吸附U(Ⅵ)。在中性条件下，LSU-1树脂能够有效吸附U(Ⅵ)；当pH=7，U(Ⅵ)初始浓度为300 mg/L时，树脂吸附容量为141.42 mg/mL。吸附过程符合Langmuir吸附等温模型(R2=0.998)和准二级动力学模型(R2=0.991)。动态试验表明，树脂吸附容量为140.52 mg/mL，与静态吸附所有相吻合；采用0.5 mol/L NaCl和0.5 mol/L Na2CO3的混合溶液淋洗，能成功将铀洗脱，适用于CO2+O2采铀工艺。
Abstract:LSU-1 ion exchange resin was used to adsorb U(Ⅵ) from CO2+O2 leaching solution. The results show that LSU-1resin can effectively adsorb U(Ⅵ) under neutral condition. When pH value is 7 and initial concentration of U(Ⅵ) is 300 mg/L, adsorption capacity is 141.42 mg/mL. The adsorption process conforms to Langmuir adsorption isotherm model (R2=0.998) and quasi second order kinetic model (R2=0.991). Dynamic experiment shows that adsorption capacity of LSU-1resin is 140.52 mg/mL, which is consistent with the results of static adsorption experiment. Mixed solution of 0.5 mol/L NaCl and 0.5 mol/L Na2CO3 can successfully elute uranium, which is suitable for CO2+O2 uranium extraction process.
keywords: LSU-1 ion exchange resin CO2+O2 leaching adsorption
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基金项目:国家自然科学基金资助项目(21761002)
引用文本：
花榕,李嘉辉,李爽,冯佳慧,王应财,陈昊梁.LSU-1离子交换树脂对U(Ⅵ)的吸附性能研究[J].有色金属（冶炼部分）,2021(8):94-99.
HUA Rong,LI Jia-hui,LI Shuang,FENG Jia-hui,WANG Ying-cai,CHEN Hao-liang.Adsorption of U(Ⅵ) with LSU-1 Ion Exchange Resin[J].Nonferrous Metals (Extractive Metallurgy),2021(8):94-99.
花榕,李嘉辉,李爽,冯佳慧,王应财,陈昊梁.LSU-1离子交换树脂对U(Ⅵ)的吸附性能研究[J].有色金属（冶炼部分）,2021(8):94-99.
HUA Rong,LI Jia-hui,LI Shuang,FENG Jia-hui,WANG Ying-cai,CHEN Hao-liang.Adsorption of U(Ⅵ) with LSU-1 Ion Exchange Resin[J].Nonferrous Metals (Extractive Metallurgy),2021(8):94-99.
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