Use of modified activated carbon for the oxidation of aqueous sulfide

被引：33
|
作者：
Lemos, Bruno R. S. [1 ]
Teixeira, Ivo F. [1 ]
De Mesquita, Joao P. [1 ]
Ribeiro, Ronny R. [2 ]
Donnici, Claudio L. [1 ]
Lago, Roche M. [1 ]
机构：
[1] Univ Fed Minas Gerais, Dept Chem, BR-31270901 Belo Horizonte, MG, Brazil
[2] Univ Fed Parana, UFPR, Dept Chem, BR-80060000 Curitiba, Parana, Brazil
来源：
CARBON | 2012年 / 50卷 / 03期
关键词：
HYDROGEN-SULFIDE; SURFACE MODIFICATION; WASTE-WATER; SUD PROTEIN; SULFUR; H2S; REMOVAL; PERFORMANCE; ADSORPTION; ELECTRODES;
D O I：
10.1016/j.carbon.2011.11.011
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 oxidation of aqueous sulfide promoted by activated carbon (AC) was investigated. Raman, infrared, X-ray diffraction, ultraviolet-visible spectroscopy and electron paramagnetic resonance analyses show that AC oxidizes aqueous sulfide to form a complex mixture of polysulfides and sulfur oxide species. This oxidation is strongly promoted by the presence of oxygen surface groups introduced by oxidation of the AC as shown by kinetic measurements. These results are discussed in terms of the similarities the AC have with enzymatic systems, i.e. redox surface groups (e.g. quinone) combined with an efficient electron conduction system. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1386 / 1393
页数：8
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