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测定了氨基膦酸型螯合树脂 (D4 12 )对 Ce( )的吸附容量 ,讨论了溶液 p H、粒径、时间、温度等因素对其吸附性能的影响。测得了不同粒径的树脂的吸附速率常数 ,判断其吸附控制类型为孔隙扩散限制。并采用红外及化学分析方法 ,推测出 D4 12螯合树脂对 Ce( )的吸附机理。
The adsorption capacity of amino phosphonic acid chelating resin (D4 12) to Ce () was determined. The influence of p H, particle size, time and temperature on the adsorption capacity of Ce () was also discussed. The adsorption rate constants of resins with different particle sizes were measured and the type of adsorption control was determined as pore diffusion limit. The adsorption mechanism of Ce () on D4 12 chelating resin was deduced by infrared and chemical analysis.