Adsorption of Supranol Yellow 4 GL from aqueous solution by surfactant-treated aluminum/chromium-intercalated bentonite

被引：48

作者：

Bouberka, Z. ^{[1
]}

Khenifi, A. ^{[1
]}

Mahamed, H. Ait ^{[1
]}

Haddou, B. ^{[1
]}

Belkaid, N. ^{[1
]}

Bettahar, N. ^{[1
]}

Derriche, Z. ^{[1
]}

机构：

[1] USTO MB, Dept Chim, Lab Physicochim Mat, Oran 31000, Algeria

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 162卷 / 01期

关键词：

Supranol Yellow 4 GL; Elovich; Langmuir; Intercalated clay; Surfactant; PILLARED MONTMORILLONITE; CLAY CATALYSTS; PART I; REMOVAL; PHENOL; SORPTION; PILCS;

D O I：

10.1016/j.jhazmat.2008.05.079

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The aim of this paper is to study the adsorption of the acid dye Supranol Yellow 4 GL(S.Y. 4 GL) from aqueous solution on an inorgano-organo clay. Bentonite is naturally occurring clay with good exchanging ability. By exchanging its interlamellar cations with cetyltrimethylammonium bromide (CTAB) and hydroxyaluminic or chromium polycations, the properties of natural bentonite can be greatly improved. Batch adsorption tests of Supranol Yellow 4 GL were carried out at 20 degrees C and constant pH 6.5. To investigate the adsorption mechanisms, the simplified kinetic models. such as pseudo-first-order, pseudo-second-order, Elovich equation and intraparticle diffusion are tested. The results show that adsorption follows second-order rate kinetic. The correlation coefficients obtained for second-order kinetics model are greater than 0.998 indicating a better fitting of this equation. The experimental data are analysed by Langmuir, Freundlich and Elovich isotherms. The equilibrium adsorption capacity of anionic dye is determined from the Langmuir equation and found to be 142, 85 and 128, 20 mg/g (standard deviation: Delta q 3.52 and 18.51) for CTAB-Cr-B and CTAB-Al-B, respectively. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：378 / 385

页数：8

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