Sorption isotherm for safranin onto rice husk: Comparison of linear and non-linear methods

被引：120
作者：
Kumar, K. Vasanth [1 ]
Sivanesan, S. [1 ]
机构：
[1] Anna Univ, Dept Chem Engn, AC Tech, Madras 600025, Tamil Nadu, India
来源：
DYES AND PIGMENTS | 2007年 / 72卷 / 01期
关键词：
sorption; safranin; rice husk; equilibrium isotherm; linear method; non-linear method;
D O I：
10.1016/j.dyepig.2005.07.020
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Comparison analysis of linear least-square method and non-linear method for estimating the isotherm parameters was made. Comparison analysis was made using the experimental equilibrium data of safranin onto rice husk at a solution temperature of 305 K. Sorption data were fitted to Freundlich, Langmuir and Redlich-Peterson isotherm equations. All the three isotherm equations showed a better fit to the experimental data. The results show that non-linear method could be a better way to obtain the isotherm parameters. Redlich-Peterson isotherm is a special case of Langmuir isotherm when the Redlich-Peterson isotherm constant g was unity. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：130 / 133
页数：4
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