Sonochemical and photochemical oxidation of organic matter

被引：144

作者：

Naffrechoux, E ^{[1
]}

Chanoux, S ^{[1
]}

Petrier, C ^{[1
]}

Suptil, J ^{[1
]}

机构：

[1] Univ Savoie, ESIGEC, Lab Chim Mol & Environm, F-73376 Le Bourget Du Lac, France

来源：

ULTRASONICS SONOCHEMISTRY | 2000年 / 7卷 / 04期

关键词：

advanced oxidation process; organic matter; phenol; ultrasound; UV irradiation; wastewater;

D O I：

10.1016/S1350-4177(00)00054-7

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Recent developments in sonochemistry have led us to study its use to treat water and wastewater. The effects of ultrasound wave in hydrophilic chemical oxidations are mainly due to hydroxyl radical production during the cavitation-induced water decomposition. Currently, the sonochemical destruction of aromatic compounds in water solution is obtained with low rates. The aim of this work is to evaluate the efficiency of the sonochemical effect in conjunction with a photochemical irradiation. Taking phenol as an example, the combined action of sonochemistry and photochemistry has been considered in a 'sonuv' reactor. An important enhancement of the degradation rate of phenol has been observed. It may be the result of three different oxidative processes: direct photochemical action, high frequency sonochemistry and reaction with ozone (produced by UV irradiation of air). The process has been successfully tested to lower the chemical oxygen demand of a municipal wastewater. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：255 / 259

页数：5

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