INFLUENCE OF THE OXYGEN-SURFACE COMPLEXES OF ACTIVATED CARBONS ON THE ADSORPTION OF CHROMIUM IONS FROM AQUEOUS-SOLUTIONS - EFFECT OF SODIUM-CHLORIDE AND HUMIC-ACID

被引：110

作者：

BAUTISTATOLEDO, I

RIVERAUTRILLA, J

FERROGARCIA, MA

MORENOCASTILLA, C

机构：

[1] Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada

来源：

CARBON | 1994年 / 32卷 / 01期

关键词：

CHROMIUM ION ADSORPTION; ACTIVATED CARBONS; OXYGEN SURFACE COMPLEXES;

D O I：

10.1016/0008-6223(94)90013-2

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：

Adsorption of Cr(III) and Cr(VI) on activated carbons from aqueous solutions has been studied. A commercial activated carbon, then treated with HNO3 to introduce surface oxygen complexes, and subsequently heated up to 873 K in N2 to eliminate some of the above complexes, gave the three samples used. Adsorption of both Cr(III) and Cr(VI) was enhanced by the presence of surface oxygen complexes of acid type on the activated carbon. The effect of the presence of NaCl and humic acid in the chromium solution on the adsorption capacity of the activated carbons has also been studied.

引用

页码：93 / 100

页数：8

共 25 条

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