用碳纳米管从硝酸溶液中回收镅  

Removal of Am From HNO_3 Solution With Carbon Nanotubes

作　　者：王兴海[1] 李辰砂[1] 陈靖[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京102201

出　　处：《核化学与放射化学》2005年第4期239-241,共3页Journal of Nuclear and Radiochemistry

摘　　要：研究了用碳纳米管从放射性废硝酸溶液中进行镅的回收。在浓硝酸溶液中,碳纳米管对镅的吸附率小于1%;随着硝酸浓度的降低,镅的吸附率迅速升高,当溶液的pH值大于5时,碳纳米管对镅的吸附率达到99.95%以上。用1.5 mol/L硝酸进行解吸,一次解吸能够从碳纳米管回收99%以上的镅。The removal and recovery of Am in HNO3 solution with carbon nanotubes （CNTs） are studied. At high HNO3 concentration, CNTs adsorb little Am, but the adsorption ratio of Am increases greatly with pH value of HNO3 solution. When pH〉5, more than 99.95% of Am can be adsorbed by CNTs. With 1.5 mol/L HNO3, more than 99% Am can be recovered from CNTs.

关 键 词：碳纳米管 镅 吸附 

分 类 号：O614.354[理学—无机化学]