Removal of organic pollutants from industrial wastewater by electrogenerated Fenton's reagent

被引：262

作者：

Panizza, M ^{[1
]}

Cerisola, G ^{[1
]}

机构：

[1] Dipartimento Ingn Chim & Proc, I-16129 Genoa, Italy

来源：

WATER RESEARCH | 2001年 / 35卷 / 16期

关键词：

wastewater treatment; hydrogen peroxide; COD removal; graphite electrodes; polyaromatic compounds;

D O I：

10.1016/S0043-1354(01)00135-X

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study was performed to investigate the treatment of an industrial wastewater mainly containing naphthalene- and anthraquinone-sulphonic acids, by electro generated Fenton's reagent. The hydrogen peroxide was produced in situ by electrochemical reduction of oxygen on graphite-felt cathodes and the Fe2+ ions were also regenerated by cathodic reduction of Fe3+. The influence of cathode potential, Fe2+ concentration and electrode surface pre-treatment on chemical oxygen demand (COD) removal and colour fading were studied. Results indicated that the higher COD removal was obtained in the presence of 3 mM of ferrous ions working at a constant potential of -1 V vs. SCE. Moreover, it was shown that both chemical and electrochemical pre-treatments of the cathode surface resulted in a decrease of COD depletion. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：3987 / 3992

页数：6

共 30 条

[1] The removal of low level organics via hydrogen peroxide formed in a reticulated vitreous carbon cathode cell. Part 2: The removal of phenols and related compounds from aqueous effluents [J].