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

页码：130 / 133

页数：4

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