摘要
以天然沸石为吸附剂,研究了时间和温度对沸石吸附水溶液中甲基橙的影响.随着吸附时间的增加,沸石对甲基橙的吸附量也增加,升温有利于吸附.根据准二级动力学的线性形式和非线性形式,采用最小差方和方法,用线性回归分析和非线性回归分析方法,得到了准二级动力学方程的参数.结果表明,线性分析和非线性分析都可用于预测时间对天然沸石吸附甲基橙的影响,误差分析表明非线性回归分析方法优于线性回归分析方法.沸石吸附甲基橙的表观活化能为14.8 kJ.mol-1,吸附过程属于化学吸附.
The effect of contact time on methyl orange(MO) adsorption onto natural zeolite is studied at three different temperatures.Increase in temperature favors the adsorption.The data are fitted to pseudo-second order kinetic model using linear and nonlinear regressive analysis,respectively.The error analysis is also performed.Present investigation shows that the linear and nonlinear methods are both suitable to predict the adsorption process using pseudo-second order kinetic model.This suggests that the adsorpti...
出处
《郑州大学学报（理学版）》
CAS
2008年第1期97-100,共4页
Journal of Zhengzhou University:Natural Science Edition
基金
河南省教育厅科技攻关资助项目
编号200510459016
关键词
沸石
吸附
甲基橙
准二级动力学
回归分析
zeolite
adsorption
methyl orange
pseudo-second order kinetic
regressive analysis
