摘要： 采用单因素试验结合Box-Behnken响应面法，以吸附容量为指标，考察壳聚糖（CS）、聚乙二醇（PEG）、β-环糊精（β-CD）、乙烯基三乙氧基硅烷（JH-V151）等因素对制备的CS/PEG/β-CD复合膜处理含铜废水性能的影响。确定CS/PEG/β-CD复合膜的最佳制备条件：m（PEG）：m（CS）=3：7，m（β-CD）：m（CS）=1：5，JH-V151无水乙醇溶液体积分数为9%。在pH为6、实验温度为55℃、实验时间为3 h时，膜对Cu²⁺的最大吸附量为49.20 mg/g，去除率达到98.40%，吸附过程可以较好地用伪二级动力学模型描述，数据可应用Langmuir等温模型拟合，膜对Cu²⁺的理论饱和吸附量为140.06 mg/g。

关键词: Box-Behnken响应面法, 壳聚糖, β-环糊精, Cu²⁺

Abstract: The influences of the factors, such as chitosan(CS), polyethylene glycol (PEG), beta-cyclodxtrin (B-CD), vinyltriethoxysilane (JH-V151), etc. on the treatment capabilities of the prepared CS/PEG/B-CD composite membrane for copper-containing wastewater have been investigated by means of using single-factor tests combined with Box-Behnken response surface method, and taking adsorption capacity as the index. The optimal preparation conditions of CS/PEG/β-CD composite membranes are determined as follows:m(PEG):m(CS)=3:7,m(β-CD):m(CS)=1:5, and the volume fraction of JH-V151 absolute alcohol solution is 9%. It is found that when pH is 6,temperature 55℃, and reaction time 3 h,the maximum absorbing capacity of the membrane for Cu²⁺ is 49.20 mg/g,and the removing rate reaches 98.40%. The adsorption kinetics could be well described by the model of pseudo two order kinetics,the adsorption isotherm model can be used for fitting adsorption data. As a result,the saturated adsorption capacity is 140.06 mg/g.

Key words: Box-Behnken response surface method, chitosan, beta-cyclodextrin, copper cations

中图分类号: 

• X703.1