用碳纳米管从硝酸溶液中回收镅
Removal of Am From HNO_3 Solution With Carbon Nanotubes
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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。Abstract: The removal and recovery of Am in HNO_3 solution with carbon nanotubes(CNTs) are stu-(died).At high HNO_3 concentration,CNTs adsorb little Am,but the adsorption ratio of Am increases greatly with pH value of HNO_3 solution.When pH>5,more than 99.95% of Am can be adsorbed by CNTs.With 1.5 mol/L HNO_3,more than 99% Am can be recovered from CNTs.
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