摘要
通过静态吸附实验考察交联壳聚糖树脂对Cu(Ⅱ)的等温吸附特性,并对其进行热力学及动力学分析。结果表明:树脂对Cu(Ⅱ)的等温吸附符合Langmuir方程,在实验浓度和温度范围内,该吸附过程表现为自发的吸热过程;吸附动力学符合准二级动力学方程,反应活化能为44.52kJ/mol,表明交联壳聚糖树脂对Cu(Ⅱ)的吸附由化学吸附控制。
Isothermal adsorption, thermodynamics and kinetics of the adsorption of Cu （ Ⅱ ） on a crosslinked chitosan resin were studied through the static adsorption experiments. Resuits show that the isothermal adsorption follows the Langmuir equation and the adsorption is a spontaneous endothermic process within the concentration and temperature range. The adsorption kinetics followed the pseudo-second-order kinetics model and the adsorption apparent energy of activation is 44.52 kJ/mol which suggests that the adsorption of Cu （ Ⅱ ） on crosslinked chitosan resin was controlled by chemical adsorption.
出处
《沈阳理工大学学报》
CAS
2013年第2期59-62,71,共5页
Journal of Shenyang Ligong University
基金
国家自然科学基金资助项目(51004072)
关键词
壳聚糖
吸附
铜
热力学
动力学
chitosan
adsorption
copper
thermodynamics
kinetics
