Removal of methylene blue by mesoporous CMK-3: Kinetics, isotherms and thermodynamics

被引：58

作者：

Ezzeddine, Zeinab ^{[1
,2
]}

Batonneau-Gener, Isabelle ^{[1
]}

Pouilloux, Yannick ^{[1
]}

Hamad, Hussein ^{[2
]}

机构：

[1] Univ Poitiers, IC2MP, UMR 7285, Poitiers, France

[2] Lebanese Univ, Platform Res & Anal Environm Sci, Beirut, Lebanon

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2016年 / 223卷

关键词：

Mesoporous carbon; Methylene blue; Adsorption; CARBON MOLECULAR-SIEVES; LOW-COST ADSORBENT; ACTIVATED CARBON; AQUEOUS-SOLUTION; ADSORPTION CHARACTERISTICS; REACTIVE DYES; CATIONIC DYES; WASTE-WATER; METAL IONS; COMPOSITE;

D O I：

10.1016/j.molliq.2016.09.003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

In this study, the removal of methylene blue from water using mesoporous carbon CMK-3 was investigated. CMK-3 was synthesized using SBA-15 as a hard template. The obtained material was fully characterized in order to access its physico-chemical characteristics. Then CMK-3 was used to adsorb methylene blue from aqueous solutions without any further modification. The effects of different parameters that affect adsorption were studied such as pH, m/V ratio, initial dye concentration and temperature. The experimental data were best fitted by the pseudo-second kinetic model and Langmuir isotherm. The maximum adsorption capacity was found to be very high (1250 mg g(-1)) and the adsorption process was found to be endothermic. In addition, the presence of electrolytes in the solution slightly affected CMK-3 adsorption capacity. The obtained results proved that CMK-3 is very efficient for methylene blue adsorption. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：763 / 770

页数：8

共 51 条

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Aqueous heavy metals removal by adsorption on amine-functionalized mesoporous silica [J].