摘要
采用LSU-1离子交换树脂从CO_(2)+O_(2)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300mg/L时,树脂吸附容量为141.42mg/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140.52mg/mL,与静态吸附试验相吻合;采用0.5mol/L NaCl和0.5mol/L Na_(2)CO_(3)的混合溶液淋洗,能成功将铀洗脱,适用于CO_(2)+O_(2)采铀工艺。
LSU-1 ion exchange resin was used to adsorb U(Ⅵ)from CO_(2)+O_(2) leaching solution.The results show that LSU-1 resin 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-1 resin is 140.52mg/mL,which is consistent with the results of static adsorption experiment.Mixed solution of 0.5mol/L NaCl and 0.5mol/L Na_(2)CO_(3) can successfully elute uranium,which is suitable for CO_(2)+O_(2) uranium extraction process.
作者
花榕
李嘉辉
李爽
冯佳慧
王应财
陈昊梁
HUA Rong;LI Jia-hui;LI Shuang;FENG Jia-hui;WANG Ying-cai;CHEN Hao-liang(State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2021年第8期94-99,共6页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金资助项目(21761002)。
