摘要
用正交实验考察了pH、Cu(Ⅱ)初始浓度、温度等因素对壳聚糖吸附废水中Cu(Ⅱ)的影响。结果表明各因素对壳聚糖吸附Cu(Ⅱ)的影响关系为:pH>Cu(Ⅱ)初始浓度>温度,其最佳组合为pH为7,Cu(Ⅱ)初始浓度5 mg.L-1,温度为15℃,Cu(Ⅱ)最高吸附率达98.85%;等温吸附曲线拟合表明,Langmuir模型、Freundlich模型均能较好地反映壳聚糖对Cu(Ⅱ)的吸附特性。
The effects of various factors such as the pH, the reaction temperature, the concentration of Cu（Ⅱ）, were investigated with orthogonal experiment. The results showed that the primary influencing factor was pH, the second was the concentration of Cu（Ⅱ）, and then reaction temperature. On the optimized conditions ofpH 7, the concentration of Cu（Ⅱ） 5 mg·L^-1and temperature 15 ℃, the adsorption rates of Cu（Ⅱ） was up to 98.85 %. And the adsorption characteristic of copper ions on ehitosan coincide with the Langmuir model and the Freundlich equation.
出处
《广东化工》
CAS
2011年第8期117-118,共2页
Guangdong Chemical Industry
关键词
壳聚糖
Cu(Ⅱ)
等温吸附
chitosan
cooper ions
isothermal absorption
