【摘要】 研究了 4 -氨基吡啶树脂在HAc -NaAc体系中对镨的吸附及解吸的行为 ,结果表明在pH =2 .63时 ,树脂对镨的吸附最好 ,表观吸附速率常数k2 98=9.0 5× 10 -4S-1,其静态饱和吸附容量为 14 5 .5 2mg/gresin ,用 0 .1mol/L、0 .5mol/L、1mol/L、2mol/L、3mol/L、4mol/L的HCl作解吸剂 ,均能达到满意的效果更多还原

【Abstract】 The adsorption behavior and mechanism of 4-aminopyridine resin(4-APR) for praseodymium is investigated.4-APR has a good adsorption ability for praseodymium in the HAc-NaAc medium at pH =2.63. The apparent rate constant is k298=9.05×10-4 S-1.Experimental results show that the statically saturated adsorption capacity is 145.52mg/g.resin.Pr3+ adsorbed on 4-APR can be eluted by0.1mol/L,0.5mol/L, 1mol/L,2mol/L,3mol/L,4mol/LHCl更多还原