Multiwalled Carbon Nanotubes as Adsorbents for the Kinetic and Equilibrium Study of the Removal of Alizarin Red S and Morin

被引：268

作者：

Ghaedi, M. ^{[1
]}

Hassanzadeh, A. ^{[2
]}

Kokhdan, S. Nasiri ^{[2
]}

机构：

[1] Univ Yasuj, Dept Chem, Yasuj 7591435, Iran

[2] Univ Urmia, Fac Sci, Dept Chem, Orumiyeh, Iran

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2011年 / 56卷 / 05期

关键词：

METHYLENE-BLUE BIOSORPTION; SOLID-PHASE EXTRACTION; YELLOW PASSION-FRUIT; BAGASSE FLY-ASH; AQUEOUS-SOLUTION; ACTIVATED CARBON; CONGO-RED; ADSORPTIVE REMOVAL; BASIC DYE; MALACHITE-GREEN;

D O I：

10.1021/je2000414

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The multiwalled carbon nanotube has been used as an efficient adsorbent for the removal of Alizarin red S (ARS) and morin from wastewater. The influence of variables including pH, temperature, concentration of the dye, amount of adsorbents and contact time, and so forth on the removal of both dyes was investigated by the batch method. Graphical correlations of various adsorption isotherm models like Langmuir, Freundlich, Tempkin, and Dubinin-Radushkevich have been carried out. The adsorption of ARS and morin has been found to be endothermic and feasible in nature. Various thermodynamic parameters, such as Gibbs free energy, entropy, and enthalpy, of the ongoing adsorption process have been calculated. The kinetic studies suggest the process following pseudosecond-order kinetics and involvement of the particle-diffusion mechanism.

引用

页码：2511 / 2520

页数：10

共 77 条

[31] Pore characterization of multi-walled carbon nanotubes modified by KOH [J].