ELIMINATION OF DYES FROM AQUEOUS SOLUTIONS USING IRON OXIDES AND CHITOSAN AS ADSORBENTS. A COMPARATIVE STUDY

被引：42

作者：

Pirillo, Silvina ^{[1
]}

Pedroni, Viviana ^{[1
]}

Rueda, Elsa ^{[1
]}

Lujan Ferreira, Maria ^{[2
]}

机构：

[1] Univ Nacl Sur, Dept Quim, RA-8000 Bahia Blanca, Buenos Aires, Argentina

[2] Univ Nacl Sur, CONICET, RA-8000 Bahia Blanca, Buenos Aires, Argentina

来源：

QUIMICA NOVA | 2009年 / 32卷 / 05期

关键词：

dyes; iron oxides; chitosan; XANTHENE DYES; ACTIVATED CARBON; ACID-SOLUTIONS; ANIONIC DYES; WASTE-WATER; ADSORPTION; KINETICS; REMOVAL; METAL; EQUILIBRIUM;

D O I：

10.1590/S0100-40422009000500030

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This work investigates the adsorption of Alizarin, Eriochrome Blue Black R and Fluorescein using chitosan, goethite and magnetite as adsorbents. For Alizarin, the best adsorbent is chitosan with a Langmuir parameter of 15.8 mmol dye/g adsorbent. For Eriochrome Blue Black R only 1.94 mmol dye/g chitosan is adsorbed. Langmuir parameters for the Alizarin adsorption on both iron oxides display one or two orders of magnitude lower than for chitosan and two orders of magnitude lower in the case of Eriochrome Blue Black R. Fluorescein does not adsorb in appreciable amounts on chitosan and it presents the lower affinity on the iron oxides.

引用

页码：1239 / U176

页数：9

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