Dechlorination and destruction of 2,4,6-trichlorophenol and pentachlorophenol using hydrogen peroxide as the oxidant catalyzed by molybdate ions under basic condition

被引：45

作者：

Tai, C ^{[1
]}

Jiang, GB ^{[1
]}

机构：

[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China

来源：

CHEMOSPHERE | 2005年 / 59卷 / 03期

基金：

中国国家自然科学基金;

关键词：

molybdate ions; hydrogen peroxide; singlet oxygen; destruction; dechlorination; 2,4,6-trichlorophenol; pentachlorophenol;

D O I：

10.1016/j.chemosphere.2004.10.024

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The dechlorination and destruction of 2,4,6-trichlorophenol (TCP) and pentachlorophenol (PCP) under basic condition using hydrogen peroxide as the oxidant catalyzed by molybdate ions have been studied. Under ambient conditions of temperature and pressure, more than 95% of millimolar solutions of TCP and PCP can be converted to CO2 and CO, chlorinated and nonchlorinated carboxylic acid in 40min. Up to 2.4 chloride ions per TCP and 3.5 chloride ions per PCP were released. TOC measurements indicated that 18% and 11% of the carbon was mineralized for TCP and PCP respectively after an hour of reaction. The results of ESR measurements suggested that the reaction possibly proceeded via the pathway with singlet oxygen. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：321 / 326

页数：6

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