植物单宁改性树脂吸附机理的研究

基金项目:

“863”国家高新技术研究发展计划项目(2002AA322060).

详细信息

Adsorption mechanism of macroporous adsorption resin of plant tannin

College of Material Science and Technology Beijing Forestry University, 100083 P. R. China

摘要: 该文在静态条件下,研究了植物单宁改性树脂对碱性橙的吸附动力学和热力学特性.动力学研究表明,植物单宁改性树脂对碱性橙的吸附脱色过程符合Langmuir等温式;由动力学速率方程可知,该过程符合二级反应动力学,同时伴有吸附剂内的粒子扩散.热力学研究表明,吸附过程是放热吸附,温度升高不利于吸附,这与实验结果相符合;此外,吸附过程为自发的物理吸附.
- 植物单宁 /
- 改性树脂 /
- 吸附 /
- 热力学 /
- 动力学
Abstract: This paper presents the analytical results of the study on adsorption kinetics and thermodynamic parameters on cation dye.Resultsshowed that the process agreed with the Langmuir Equation and second reaction dynamics. Meanwhile, diffusion of dye micro-particles played a very important role in the adsorption process. From the thermodynamic parameter analysis, it had been testified that the adsorption process precipitated a temperature reaction. High temperatures do not benefit adsorption. The adsorption process appears to be a type of spontaneous physical adsorption.
- plant tannin /
- macroporous adsorption resin /
- adsorption /
- thermodynamics /
- kinetics