Adsorption of methylene blue onto bamboo-based activated carbon: Kinetics and equilibrium studies

被引：1178

作者：

Hameed, B. H. ^{[1
]}

Din, A. T. M. ^{[1
]}

Ahmad, A. L. ^{[1
]}

机构：

[1] Univ Sci Malaysia, Sch Chem Engn, George Town 14300, Malaysia

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2007年 / 141卷 / 03期

关键词：

activated carbon; bamboo; methylene blue; isotherm; kinetics;

D O I：

10.1016/j.jhazmat.2006.07.049

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Bamboo, an abundant and inexpensive natural resource in Malaysia was used to prepare activated carbon by physiochemical activation with potassium hydroxide (KOH) and carbon dioxide (CO2) as the activating agents at 850 degrees C for 2 h. The adsorption equilibrium and kinetics of methylene blue dye on such carbon were then examined at 30 degrees C. Adsorption isotherm of the methylene blue (MB) on the activated carbon was determined and correlated with common isotherm equations. The equilibrium data for methylene blue adsorption well fitted to the Langmuir equation, with maximum monolayer adsorption capacity of 454.2 mg/g. Two simplified kinetic models including pseudo-first-order and pseudo-second-order equation were selected to follow the adsorption processes. The adsorption of methylene blue could be best described by the pseudo-second-order equation. The kinetic parameters of this best-fit model were calculated and discussed. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：819 / 825

页数：7

共 28 条

[21] Adsorption of methylene blue onto jute fiber carbon: kinetics and equilibrium studies [J].

Senthilkumaar, S ;

Varadarajan, PR ;

Porkodi, K ;

Subbhuraam, C .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2005, 284 (01) :78-82

[22] ANALYSES OF THE MECHANICAL-PROPERTIES AND MICROSTRUCTURE OF BAMBOO EPOXY COMPOSITES [J].

SHIN, FG ;

XIAN, XJ ;

ZHENG, WP ;

YIPP, MW .

JOURNAL OF MATERIALS SCIENCE, 1989, 24 (10) :3483-3490

[23] REPORTING PHYSISORPTION DATA FOR GAS SOLID SYSTEMS WITH SPECIAL REFERENCE TO THE DETERMINATION OF SURFACE-AREA AND POROSITY (RECOMMENDATIONS 1984) [J].

SING, KSW ;

EVERETT, DH ;

HAUL, RAW ;

MOSCOU, L ;

PIEROTTI, RA ;

ROUQUEROL, J ;

SIEMIENIEWSKA, T .

PURE AND APPLIED CHEMISTRY, 1985, 57 (04) :603-619

[24] Adsorption of acid dye onto activated carbons prepared from agricultural waste bagasse by ZnCl2 activation [J].

Tsai, WT ;

Chang, CY ;

Lin, MC ;

Chien, SF ;

Sun, HF ;

Hsieh, MF .

CHEMOSPHERE, 2001, 45 (01) :51-58

[25] PORE AND SOLID DIFFUSION MODELS FOR FIXED-BED ADSORBERS [J].

WEBER, TW ;

CHAKRAVORTI, RK .

AICHE JOURNAL, 1974, 20 (02) :228-238

[26]

WEBER WJ, 1972, PHYSL CHEM PROCESSES

[27] Pore structure and adsorption performance of the activated carbons prepared from plum kernels [J].

Wu, FC ;

Tseng, RL ;

Juang, RS .

JOURNAL OF HAZARDOUS MATERIALS, 1999, 69 (03) :287-302

[28] Studies of the surface area and porosity of activated carbons prepared from rice husks [J].

Yalçin, N ;

Sevinç, V .

CARBON, 2000, 38 (14) :1943-1945

← 1 2 3 →