Adsorption behavior of a textile dye of Reactive Blue 19 from aqueous solutions onto modified bentonite

被引：125

作者：

Gok, Ozer ^{[1
]}

Ozcan, A. Safa ^{[1
]}

Ozcan, Adnan ^{[1
]}

机构：

[1] Anadolu Univ, Dept Chem, Fac Sci, TR-26470 Eskisehir, Turkey

来源：

APPLIED SURFACE SCIENCE | 2010年 / 256卷 / 17期

关键词：

Adsorption; Clay; Modified bentonite; Dye; RB19; Kinetics; Isotherms; KINETIC-MODELS; REMOVAL; ACID-BLUE-193; SEPIOLITE; ORGANOBENTONITE; MONTMORILLONITE; SURFACTANT; SORPTION; ZEOLITE; PORE;

D O I：

10.1016/j.apsusc.2009.12.134

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The aim of this study is to evaluate adsorption kinetics, isotherms and thermodynamic parameters of Reactive Blue 19 (RB19) onto modified bentonite from aqueous solutions. The effects of pH, contact time, initial dye concentration and temperature were investigated in the experimentally. Natural bentonite was modified by using 1,6-diamino hexane (DAH) as a modifying agent. The characterization of modified bentonite (DAH-bentonite) was accomplished by using FTIR, TGA, BET and elemental analysis techniques. The optimum pH value for the adsorption experiments was found to be 1.5 and all the experiments were carried out at this pH value. The pseudo-second-order kinetic model agrees very well with the experimental results. Equilibrium data were also fitted well to the Langmuir isotherm model in the studied concentration range of RB19 at 20 degrees C. The results indicate that DAH-modified bentonite is a suitable adsorbent for the adsorption of textile dyes. (C) 2010 Elsevier B. V. All rights reserved.

引用

页码：5439 / 5443

页数：5

共 26 条

[11]

LANGMUIR I, 1918, J AM CHEM SOC, V40, P1403

[12] Kinetics, isotherm and thermodynamic studies of adsorption of Acid Blue 193 from aqueous solutions onto natural sepiolite [J].

Özcan, A ;

Öncü, EM ;

Özcan, AS .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2006, 277 (1-3) :90-97

[13] Adsorption of Acid Blue 193 from aqueous solutions onto DEDMA-sepiolite [J].

Özcan, A ;

Öncü, EM ;

Özcan, AS .

JOURNAL OF HAZARDOUS MATERIALS, 2006, 129 (1-3) :244-252

[14] Modification of bentonite with a cationic surfactant:: An adsorption study of textile dye Reactive Blue 19 [J].

Ozcan, Adnan ;

Omeroglu, Cigdem ;

Erdogan, Yunus ;

Ozcan, A. Sara .

JOURNAL OF HAZARDOUS MATERIALS, 2007, 140 (1-2) :173-179

[15] Adsorption of Acid Blue 193 from aqueous solutions onto BTMA-bentonite [J].

Özcan, AS ;

Erdem, B ;

Özcan, A .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2005, 266 (1-3) :73-81

[16] Adsorption of acid dyes from aqueous solutions onto acid-activated bentonite [J].

Özcan, AS ;

Özcan, A .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2004, 276 (01) :39-46

[17] Dye removal by immobilised fungi [J].

Rodriguez Couto, Susana .

BIOTECHNOLOGY ADVANCES, 2009, 27 (03) :227-235

[18] Adsorption modelling of textile dyes by sepiolite [J].

Santos, Silvia C. R. ;

Boaventura, Rui A. R. .

APPLIED CLAY SCIENCE, 2008, 42 (1-2) :137-145

[19] Preparations of organobentonite using nonionic surfactants [J].

Shen, YH .

CHEMOSPHERE, 2001, 44 (05) :989-995

[20] DECOLOURIZATION OF AZODYE SOLUTIONS BY FENTONS OXIDATION [J].

SOLOZHENKO, EG ;

SOBOLEVA, NM ;

GONCHARUK, VV .

WATER RESEARCH, 1995, 29 (09) :2206-2210

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