摘要
本文选择乙二胺四乙酸酐(EDTAD)作为修饰剂对玉米芯进行化学接枝改性,同时对修饰玉米芯的吸附行为进行了研究。实验数据表明与未修饰玉米芯相比,EDTAD修饰玉米芯对两种阳离子染料的吸附容量明显增加。吸附等温线实验表明,Langmuir模型可较好描述此吸附过程,动力学实验表明,准二级方程适合描述此吸附过程。除此之外,还探讨了这种改性玉米芯的再生率。
A modified corncob was prepared by grafting EDTAD onto the surface of corncob.The effect of pH,adsorption time,concentration of cationic dyes and temperature to the adsorption of the modified corncob with methylene blue and neutral red were studied.The adsorption curves were fitted better with Langmuir isotherm and the result indicated that the adsorption reaction were monolayer.The kinetics for MB and NR followed the pseudo-second order kinetics.Compared with corncob,the modified corncob has the higher adsorption capacity,so it has the good practical application value.
出处
《安阳师范学院学报》
2011年第2期110-114,共5页
Journal of Anyang Normal University
基金
河南省教育厅自然科学研究计划项目(2010A150002)
