【摘要】 以羧甲基壳聚糖为原料 ,经戊二醛交联制备阳离子型树脂 ,考察了其对稀土离子La3 + 、Nd3 + 、Sm3 + 、Lu3 + 吸附性能。探讨了溶液的酸度、体系温度、初始离子浓度及离子强度对该树脂吸附性能的影响 ;发现羧甲基壳聚糖经戊二醛交联制成的树脂对稀土离子有较强的吸附性 ,最高吸附率可达99%以上 ,并且具有良好的重复使用性 ;其吸附性为满足Langmuir或Freundilich等温式。更多还原

【Abstract】 Using carboxymethyl chitosan as raw material, glutaraldehyde as cross-linked agent,regenerated resin of carboxymethyl chitosan was prepared. The effects of various factors such as reaction time, ionic strength, PH value and concentration on the adsorption behavior for La 3+?Nd 3+?Sm 3+?Lu 3+ on the resin of cmcs were investigated. It was found that the adsorption capacity of La 3+?Nd 3+?Sm 3+?Lu 3+ ion on the resin was very good. The highest rate of adsorption reached 95 %. The resin of carboxymethyl chitosan can be used for five times with high adsorption capacity. Its adsorption behavior was coincided with the equation of Langmuir or Freudlich.更多还原