摘要
研究了XDA-200大孔树脂对盐水中二苯基甲烷二胺(MDA)的吸附过程。通过静态吸附平衡实验,得到了吸附等温线,并用Freundlich等温线方程进行拟合,表明吸附过程属优惠吸附,得到了吸附动力学总方程,表观吸附活化能为13 249 J.mol-1,表观吸附级数为0.4728。探讨了搅拌速度、温度、树脂粒径和MDA初始浓度对吸附速率的影响。结果表明,吸附速率随搅拌速度的加快而增大、随MDA初始浓度的增加而增大、随温度的升高而增大、随树脂粒径的增大而减小。为工业装置的设计提供了依据。
Adsorption process of diaminodiphenyl methane （MDA） in brine on macroporous resin XDA-200 is stud- ied. Static adsorption equilibrium experiments are carried out. Adsorption isotherms are acquired. The adsorption data are correlated with the Freundlich isotherm equation. The correlation results are in good agreement with experimental data, and this adsorption process is favorable. Adsorption kinetic equation is obtained and the apparent activation energy （Eo） is 13 249 J · mol^-1 , adsorption order （n） is 0. 4728. The effects of stirring speed, temperature, resin particle diameter and initial MDA concentration on the adsorption rate have been investigated. The adsorption rate increases when temperature, initial MDA concentration, stirring speed rise and decreases when resin particle radius rises. The results can be used to design industry process.
出处
《化学与生物工程》
CAS
2010年第4期38-41,共4页
Chemistry & Bioengineering
关键词
大孔树脂
二苯基甲烷二胺
吸附
macroporous resin
diaminodiphenyl methane
adsorption
