羧甲基壳聚糖对Eu^(3+)离子吸附性能的研究

Eu^(3+) Ion Adsorption Capacity On Carboxymethyl Chitosan

以壳聚糖为原料,在碱性条件下合成了羧甲基壳聚糖,考察了其对稀土离子Eu3+的吸附性能。讨论了时间,溶液的酸度、初始离子浓度、羧甲基取代度及离子强度对吸附性能的影响。发现羧甲基壳聚糖对Eu3+有较强的吸附性,吸附性满足Langmuir等温式。

Carboxymethyl chitosan was prepared under alkalescence with chitosan as raw material. The effects of various factors such as reaction time, pH value, subsititution .degree of carboxymethyl group and concentration on the adsorption behavior for Eu^3＋ were investigated. The adsorption capacity of Eu^3＋ on carboxymethyl chitosan was good. The adsorption behair follows the equation of Langmuir.