Dynamic analysis of sorption of Methylene Blue dye on granular and powdered activated carbon

被引：147

作者：

Yener, Julide ^{[1
]}

Kopac, Turkan ^{[1
]}

Dogu, Gulsen ^{[2
]}

Dogu, Timur ^{[3
]}

机构：

[1] Zonguldak Karaelmas Univ, Dept Chem, TR-67100 Zonguldak, Turkey

[2] Gazi Univ, Dept Chem Engn, TR-06570 Ankara, Turkey

[3] Middle E Tech Univ, Dept Chem Engn, TR-06531 Ankara, Turkey

来源：

CHEMICAL ENGINEERING JOURNAL | 2008年 / 144卷 / 03期

关键词：

Activated carbon; Methylene Blue; Adsorption; Effective diffusivity; Moment technique;

D O I：

10.1016/j.cej.2008.02.009

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Removal of dyes and pigments from wastewaters of dying and printing industries is a major environmental issue. Sorption rate and equilibrium parameters of Methylene Blue on granular and powdered activated carbons were investigated in a batch adsorber. Due to the significance of pore diffusion resistance and partial closure of pore mouths by dissociatively chemisorbed dyes, both sorption rate and sorption capacity values evaluated for granular Carbon were lower than the corresponding values for powdered activated carbon. Concentration independent effective pore diffusivity values in the order of magnitude of 10(-9) cm(2)/s were obtained by the moment analysis of a proposed diffusion model (Model I). (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：400 / 406

页数：7

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