Novel tannin-based adsorbent in removing cationic dye (Methylene Blue) from aqueous solution. Kinetics and equilibrium studies

被引：84

作者：

Sanchez-Martin, J. ^{[1
]}

Gonzalez-Velasco, M. ^{[2
]}

Beltran-Heredia, J. ^{[1
]}

Gragera-Carvajal, J. ^{[1
]}

Salguero-Fernandez, J. ^{[1
]}

机构：

[1] Univ Extremadura, Dept Chem Engn & Phys Chem, E-06071 Badajoz, Spain

[2] Univ Extremadura, Dept Math, E-06071 Badajoz, Spain

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 174卷 / 1-3期

关键词：

Quebracho; Tannin; Methylene Blue; Dye removal; Natural adsorbents; Gelification; ADSORPTION MECHANISM; MASS-SPECTROMETRY; TEXTILE EFFLUENT; METAL-IONS; WASTE; SORPTION; DECOLORIZATION; DECOLORISATION; BIOSORPTION; ACTIVATION;

D O I：

10.1016/j.jhazmat.2009.09.008

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Natural tannin-based adsorbent has been prepared on the basis of the gelification of Quebracho bark extract. The resulting product, Quebracho Tannin Get (QTG) was tested as cationic dye adsorbent with Methylene Blue (MB). Kinetics of adsorption process were studied out and a period of 15 days was determined for reaching equilibrium. The influences of pH and temperature were evaluated. As pH or temperature raise q capacity of QTG increases. Theoretical modelization of dye-QTG adsorption was carried out by multiparametric adjustment according to Langmuir's hypothesis. Values of the k(l1), k(l2) and activation energies were calculated. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：9 / 16

页数：8

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