D152树脂对铕(Ⅲ)的吸附作用  

SORPTION OF Eu(Ⅲ) BY D152 RESIN

作　　者：施林妹[1] 王惠君[2] 

机构地区：[1]丽水职业技术学院,浙江丽水323000 [2]浙江海洋学院海洋科技学院,浙江舟山316004

出　　处：《矿物学报》2008年第1期89-92,共4页Acta Mineralogica Sinica

基　　金：浙江省教育厅资助项目(No20040551);浙江省教育厅项目(No20031146)

摘　　要：研究了D152树脂在NaAc-HAc缓冲体系中对Eu^3＋的吸附与解吸行为。结果表明：静态饱和吸附容量为340mg／g；用0．1～2．0mol／L HCl洗脱，洗脱率为92％以上；测得吸附热力学函数分别为：AH=14．3kJ／mol、△G298=-1．88kJ／mol、△S=54．3J／（mol·K）；等温吸附曲线遵守Freundlich关系式；表观活化能Ea=9．10kJ／mol，表观速率常数k298=1．54×10^-5s^-1。用化学和红外光谱的方法探讨了树脂对Eu^3＋的吸附机理。The adsorption behavior of D152 resin for Eu^3＋ was investigated. Experimental results showed that statically saturated adsorption capacity is 340 mg/g resin. Eu^3＋ adsorbed on D152 can be eluted with 0. 1 - 2. 0 mol/L HCl. The elution percentages are over 92%. The thermodynamic adsorption parameters are △H = 14.3kJ/mol, △G298 = -1.88kJ/mol and △S = 54.3 J/（ mol · K）, respectively. The adsorption behavior of D152 for Eu^3＋ obeys the Freundlich isotherm. The apparent activation energy is Ea = 9. 10 kJ/ mol. The apparent adsorption rate constant is k298 = 1.54 × 10^-5 s^-1. The adsorption mechanism of resin for Eu^3＋ was examined in terms of chemical analyses and IR spectra.

关 键 词：D152树脂 吸附 机理 铕 

分 类 号：O614.33[理学—无机化学] TF845[理学—化学]