Removal of Cr(VI) from aqueous solutions by adsorption onto hazelnut shell activated carbon: kinetic and equilibrium studies

被引：303

作者：

Kobya, M ^{[1
]}

机构：

[1] Gebze Inst Technol, Dept Environm Engn, TR-41400 Gebze, Turkey

来源：

BIORESOURCE TECHNOLOGY | 2004年 / 91卷 / 03期

关键词：

adsorption; Cr(VI) ion; hazelnut shell; kinetics and equilibrium;

D O I：

10.1016/j.biortech.2003.07.001

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The adsorption Cr(VI) from aqueous solutions onto hazelnut shell activated carbon was carried out by varying the parameters such as pH, initial Cr(VI) concentration and temperature. The experimental data fitted well to the pseudo first-order kinetic model and then the rate constants were evaluated. The Langmuir isotherm provided the best correlation for Cr(VI) onto the activated carbon. Adsorption capacity was calculated from the Langmuir isotherm as 170 mg/g at an initial pH of 1.0 for the 1000 mg/l Cr(VI) solution. Thermodynamic parameters were evaluated and the adsorption is endothermic showing monolayer adsorption of Cr(VI). (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：317 / 321

页数：5

共 19 条

[1]

Agency E. P., 1990, ENV POLL CONTR ALT

[2] USE OF COCONUT SHELL-BASED ACTIVATED CARBON FOR CHROMIUM(VI) REMOVAL [J].

ALAERTS, GJ ;

JITJATURUNT, V ;

KELDERMAN, P .

WATER SCIENCE AND TECHNOLOGY, 1989, 21 (12) :1701-1704

[3]

APHA, 1985, STAND METH EX WAT WA

[4] Low-cost adsorbents for heavy metals uptake from contaminated water: a review [J].

Babel, S ;

Kurniawan, TA .

JOURNAL OF HAZARDOUS MATERIALS, 2003, 97 (1-3) :219-243

[5] A review of potentially low-cost sorbents for heavy metals [J].

Bailey, SE ;

Olin, TJ ;

Bricka, RM ;

Adrian, DD .

WATER RESEARCH, 1999, 33 (11) :2469-2479

[6] Removal of toxic cations and Cr(Vi) from aqueous solution by hazelnut shell [J].

Cimino, G ;

Passerini, A ;

Toscano, G .

WATER RESEARCH, 2000, 34 (11) :2955-2962

[7] Removal of Ni(II) from aqueous solution by adsorption onto hazelnut shell activated carbon:: equilibrium studies [J].

Demirbas, E ;

Kobya, M ;

Öncel, S ;

Sencan, S .

BIORESOURCE TECHNOLOGY, 2002, 84 (03) :291-293

[8]

EKINCI Z, 1997, CHIM ACTA TURCI, V25, P165

[9] Adsorption kinetics for the removal of chromium(VI) from aqueous solution by adsorbents derived from used tyres and sawdust [J].

Hamadi, NK ;

Chen, XD ;

Farid, MM ;

Lu, MGQ .

CHEMICAL ENGINEERING JOURNAL, 2001, 84 (02) :95-105

[10] Adsorption kinetic models applied to nickel ions on hazelnut shell activated carbons [J].

Kobya, M ;

Demirbas, E ;

Öncel, MS ;

Sencan, S .

ADSORPTION SCIENCE & TECHNOLOGY, 2002, 20 (02) :179-188

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