Isotherm and thermodynamic data of adsorption of methylene blue from aqueous solution onto peat

被引：116

作者：

Fernandes, Andreia Neves ^{[1
]}

Policiano Almeida, Carlos Alberto ^{[2
]}

Debacher, Nito Angelo ^{[3
]}

de Souza Sierra, Maria Marta ^{[3
]}

机构：

[1] Univ Caxias do Sul, Ctr Ciencias Exatas & Tecnol, BR-95070560 Caxias Do Sul, RS, Brazil

[2] Univ Estadual, Ctr Oeste, Dept Quim, BR-85015430 Guarapuava, PR, Brazil

[3] Univ Fed Santa Catarina, Dept Quim, BR-88040900 Florianopolis, SC, Brazil

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2010年 / 982卷 / 1-3期

关键词：

Adsorption; Peat; Isotherm; Thermodynamic parameters; WASTE-WATER; BASIC DYE; ACTIVATED CARBON; REMOVAL; EQUILIBRIUM; KINETICS; SORPTION; IONS; ACID; MONTMORILLONITE;

D O I：

10.1016/j.molstruc.2010.08.006

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, the adsorption capacity of peat relative to methylene blue (MB) was evaluated to test its application in textile wastewater treatment. Adsorption was conducted using varied initial concentrations of MB solutions at three different temperatures (35, 45 and 60 degrees C). The equilibrium data fitted well the Langmuir isotherm with the maximum adsorption capacity increasing with temperature from 190 mg g(-1) to 240 mg g(-1). In all experiments the adsorption equilibrium was attained in 4.5 h. Thermodynamic data showed that MB adsorption onto peat is endothermic and spontaneous under the experimental conditions employed. Briefly, peat exhibited rapid adsorption capabilities and high efficiency in removal of MB from aqueous solution. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：62 / 65

页数：4

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