Adsorption of methylene blue from aqueous solutions by activated carbon prepared from hazelnut husk using zinc chloride

被引：112

作者：

Karacetin, Gulsum ^{[1
]}

Sivrikaya, Sezen ^{[1
,2
]}

Imamoglu, Mustafa ^{[1
]}

机构：

[1] Sakarya Univ, Sci & Arts Fac, Dept Chem, TR-54187 Sakarya, Turkey

[2] Bulent Ecevit Univ, Fac Engn, Dept Environm Engn, TR-67100 Zonguldak, Turkey

来源：

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS | 2014年 / 110卷

关键词：

Activated carbon; Hazelnut husk; Methylene blue; Dye; Removal; Agricultural wastes; BASIC DYE ADSORPTION; REMOVAL; EQUILIBRIUM; KINETICS; IONS; MECHANISM; SORPTION; ADSORBENT; CR(VI); WOOD;

D O I：

10.1016/j.jaap.2014.09.006

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this study, activated carbon prepared from hazelnut husk (HHAC) using zinc chloride as chemical activating agent was characterized by FT-IR spectroscopy, BET surface area, Boehm titration, SEM and elemental analyses. During adsorption from aqueous solution of methylene blue (MB) studied by the batch method, effects of many variables, including solution pH, agitation time, temperature and initial concentration were investigated. It was established that MB adsorption reached equilibrium at 120 min at pH 7.0 as the appropriate value and is more compatible with Langmuir adsorption isotherm with respect to Freundlich. MB adsorption capacity of HHAC was found to be 476.2 mg g(-1) and MB adsorption kinetics corresponds well with pseudo second order model. Thermodynamic studies revealed that MB adsorption is a spontaneous and endothermic process. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：270 / 276

页数：7

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