Adsorption of chromium(VI) from aqueous solution by activated carbon derived from olive bagasse and applicability of different adsorption models

被引：338

作者：

Demiral, Hakan ^{[1
]}

Demiral, Ilknur ^{[1
]}

Tumsek, Fatma ^{[1
]}

Karabacakoglu, Belgin ^{[1
]}

机构：

[1] Eskisehir Osmangazi Univ, Fac Engn Architecture, Dept Chem Engn, TR-26480 Eskisehir, Turkey

来源：

CHEMICAL ENGINEERING JOURNAL | 2008年 / 144卷 / 02期

关键词：

Chromium(VI); Adsorption; Adsorption isotherm; Activated carbon; Olive bagasse;

D O I：

10.1016/j.cej.2008.01.020

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, activated carbon was prepared from olive bagasse by physical activation of steam. The pore properties including the BET surface area, pore volume, pore size distribution and average pore diameter were characterized. BET surface area of the activated carbon was determined as 718 m(2)/g. The removal of Cr(VI) from aqueous solutions by adsorption has been studied. The effects of pH. contact time and temperature on adsorption of Cr(VI) were investigated. The maximum adsorption yield was obtained at the initial pH of 2. The adsorption kinetics shows that pseudo-second order rate expression fitted the adsorption kinetics. Equilibrium isotherms were measured experimentally. Results were analyzed by the Langmuir, Freundlich, Dubinin-Redushkevich, Temkin and Frumkin equations Using linearized correlation coefficient at different temperatures. The characteristics parameters for each isotherm have been determined. Models and isotherm constants were evaluated depending on temperature. Langmuir equation was found to fit the equilibrium data for Cr(VI) adsorption. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：188 / 196

页数：9

共 32 条

[1] Systematic studies on adsorption of lead on sea nodule residues [J].

Agrawal, A ;

Sahu, KK ;

Pandey, BD .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2005, 281 (02) :291-298

[2] Biosorption of chromium(VI) ions by Mowital®B30H resin immobilized activated sludge in a packed bed:: comparison with granular activated carbon [J].

Aksu, Z ;

Gönen, F ;

Demircan, Z .

PROCESS BIOCHEMISTRY, 2002, 38 (02) :175-186

[3]

*APHA AWWA WPCF, 1985, STAND METH AN WAT WA, P201

[4] Effect of steam activation on the porosity and chemical nature of activated carbons from Eucalyptus globulus and peach stones [J].

Arriagada, R ;

Garcia, R ;

MolinaSabio, M ;

RodriguezReinoso, F .

MICROPOROUS MATERIALS, 1997, 8 (3-4) :123-130

[5] Comparative studies on the adsorption of Cr(VI) ions on to various sorbents [J].

Baran, Ayse ;

Bicak, Evran ;

Baysal, Senay Hamarat ;

Onal, Secil .

BIORESOURCE TECHNOLOGY, 2007, 98 (03) :661-665

[6] Applicability of the various adsorption models of three dyes adsorption onto activated carbon prepared waste apricot [J].

Basar, Canan Akmil .

JOURNAL OF HAZARDOUS MATERIALS, 2006, 135 (1-3) :232-241

[7] Adsorption of Cr(VI) on activated rice husk carbon and activated alumina [J].

Bishnoi, NR ;

Bajaj, M ;

Sharma, N ;

Gupta, A .

BIORESOURCE TECHNOLOGY, 2004, 91 (03) :305-307

[8] Effects of burn-off and activation temperature on preparation of activated carbon from corn cob agrowaste by CO2 and steam [J].

Chang, CF ;

Chang, CY ;

Tsai, WT .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2000, 232 (01) :45-49

[9] Chromium adsorption and Cr(VI) reduction to trivalent chromium in aqueous solutions by soya cake [J].

Daneshvar, N ;

Salari, D ;

Aber, S .

JOURNAL OF HAZARDOUS MATERIALS, 2002, 94 (01) :49-61

[10] Removal of Cr(VI) from aqueous solution by two Lewatit-anion exchange resins [J].

Gode, F ;

Pehlivan, E .

JOURNAL OF HAZARDOUS MATERIALS, 2005, 119 (1-3) :175-182

← 1 2 3 4 →