Anodic oxidation with doped diamond electrodes: a new advanced oxidation process

被引：152

作者：

Kraft, A

Stadelmann, M

Blaschke, M

机构：

[1] Gesimat GmbH, D-12555 Berlin, Germany

[2] GERUS mbH, D-12459 Berlin, Germany

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2003年 / 103卷 / 03期

关键词：

diamond electrodes; anodic oxidation; advanced oxidation process; mineralization; water treatment;

D O I：

10.1016/j.jhazmat.2003.07.006

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Boron-doped diamond anodes allow to directly produce OH. radicals from water electrolysis with very high current efficiencies. This has been explained by the very high overvoltage for oxygen production and many other anodic electrode processes on diamond anodes. Additionally, the boron-doped diamond electrodes exhibit a high mechanical and chemical stability. Anodic oxidation with diamond anodes is a new advanced oxidation process (AOP) with many advantages compared to other known chemical and photochemical AOPs. The present work reports on the use of diamond anodes for the chemical oxygen demand (COD) removal from several industrial wastewaters and from two synthetic wastewaters with malic acid and ethylenediaminetetraacetic (EDTA) acid. Current efficiencies for the COD removal between 85 and 100% have been found. The formation and subsequent removal of by-products of the COD oxidation has been investigated for the first time. Economical considerations of this new AOP are included. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：247 / 261

页数：15

共 34 条

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