8-羟基喹哪啶螯合树脂吸附钯(Ⅱ)的性能研究  

Study on 8-Hydroxyquinoline Chelate Resin's Adsorption Property for Pd(Ⅱ)

作　　者：周小华 ZHOU Xiaohua(Kunming Cooperative Research Center for Pollution Prevention of Dianchi (Lake), Kunming University, Kunming 650214, China)

机构地区：[1]昆明学院昆明滇池(湖泊)污染防治合作研究中心,昆明650214

出　　处：《贵金属》2019年第1期25-29,共5页Precious Metals

基　　金：昆明学院引进人才科技项目(YJL18009);昆明滇池国家旅游度假区环保局项目(HX190001)

摘　　要：用静态法研究了8-羟基喹哪啶螯合树脂在酸性溶液中吸附和解吸Pd(Ⅱ)的性能,分析了吸附等温线和吸附动力学过程。结果表明,在0.6 mol/L HCl的介质中,树脂对Pd(Ⅱ)的饱和吸附量为99.46mg/g,吸附率为94.7%,解吸率达到95.6%;吸附过程符合Langmuir和Freundlich等温吸附模型,准二级动力学Lagergren方程更适合描述此吸附过程。The property of 8-hydroxyquinoline chelate resin(PS-HQD) for adsorption and desorption Pd(Ⅱ) from solution were studied with static adsorption, and the adsorption isotherm and kinetics were analyzed. The results showed that saturated adsorption capacity was 99.46 mg/g, adsorption and desorbtion rate of PS-HQD could reach 94.7% and 95.6% in 0.6 mol/L HCl solution, respectively. The equilibrium adsorption followed to both Langmuir and Freundlich isotherms models, and the Lgergren pseudo-second order kinetic model was more suitable for describing the adsorption process.

关 键 词：湿法冶金 螯合树脂 吸附 Pd(Ⅱ) 动力学 模型 

分 类 号：O647.3[理学—物理化学]