交联壳聚糖多孔微球对染料的吸附平衡及吸附动力学分析

Equilibrium and Kinetic Analysis of Adsorption for Dyestuff by Cross-linked Chitosan Porous Microbeads

研究了交联壳聚糖多孔微球对染料的吸附平衡规律,探讨了染料溶液在不同的初始浓度、pH值及不同吸附剂用量条件下吸附动力学规律及吸附动力学控制机理。结果表明,壳聚糖微球对染料的吸附规律可较好地符合Langmuir吸附等温式,吸附动力学模型可以用表观二级速率方程来描述。

Equilibrium of adsorption of dyes on cross-linked chitosan porous microbeads was studied. Kinetic modeling and rate control mechanisms on various conditions such as initial dyes concentration, pH value and adsorbent dosage were investigated. The results showed that the adsorption law of dyes on cross-linked chitosan porous microbeads fitted very well with the Langmuir model and dynamical data fitted well with the second-order kinetic model.