BK110树脂吸附铒的研究  

Studies on the Adsorption Behavior of BK110 Resin for Erbium(Ⅲ)

作　　者：王惠君[1] 高伟彪[1] 高鹏[1] 

机构地区：[1]浙江海洋学院海洋科学学院,浙江舟山316000

出　　处：《稀土》2011年第2期19-22,共4页Chinese Rare Earths

基　　金：浙江省教育厅科研资助项目(20040551)

摘　　要：研究了BK110树脂在HAc-NaAc缓冲体系中对铒离子的吸附及解吸的行为,在pH=5.60时吸附最佳。静态饱和吸附容量为256mg.g-1(树脂),用0.3mol.L-1～2.0mol.L-1HCl可定量洗脱;测得吸附速率常数k298=4.28×10-5sec-1,表观活化能Ea=26.0kJ.mol-1;吸附服从Freundlich经验式;热力学参数ΔH=12.2kJ.mol-1。用化学和红外光谱等方法探讨了吸附机理。The adsorption behavior of BK110 Resin for Er（Ⅲ） is investigated.BK110 resin has a good adsorption ability for Er（Ⅲ） in the HAc—NaAc medium at pH=5.60.The statically saturated sorption capacity is 256 mg·g-1·resin.Er（Ⅲ） adsorbed on BK110 can be eluted quantitatively by using 0.3～2.0mol·L-1 hydrochloric acid as an eluant.The apparent rate constant and activation energy are k298=4.28×10-5 sec-1 and Ea=26.0 kJ· mol-1 respectively.The adsorption behavior of BK110 resin for Er（Ⅲ） obeys the Freundlich isotherm.The adsorption thermodynamic parameters of BK110 for Er（Ⅲ） are enthalpy change ΔH= 12.2kJ·mol-1.The adsorption mechanism of BK110 for Er（Ⅲ） was confirmed by chemical analysis and IR spectrometry.

关 键 词：BK110树脂 铒(Ⅲ) 吸附 

分 类 号：TF804.3[冶金工程—有色金属冶金] O647.3[理学—物理化学]