Effects of chloride and sulfate on the rate of oxidation of ferrous ion by H2O2

被引：103

作者：

Le Truong, G ^{[1
]}

De Laat, J ^{[1
]}

Legube, B ^{[1
]}

机构：

[1] Univ Poitiers, Ecole Super Ingenieurs Poitiers, Lab Chim Eau Environm, CNRS,UMR 6008, F-86022 Poitiers, France

来源：

WATER RESEARCH | 2004年 / 38卷 / 09期

关键词：

Fenton's reaction; hydrogen peroxide; kinetics; sulfate; chloride; modeling;

D O I：

10.1016/j.watres.2004.01.033

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The rates of oxidation of Fe(II) by H2O2 in the presence of sodium perchlorate, sodium nitrate, sodium chloride and sodium sulfate salts (0-1 M) have been compared in the study. Experiments were carried out in a batch reactor, in the dark, at pH < 3, 25 +/- 0.5degreesC and at controlled ionic strength (less than or equal to 1M). The experimental results showed that the rates of oxidation of Fe(II) in the presence of chloride, nitrate and perchlorate were identical. In the presence of sulfate, the rate of oxidation of Fe(II) was faster and depended on the pH and the concentration of sulfate. The pseudo second-order rate constants for the reaction of H2O2 with Fe2+, FeCl+ and FeSO4 were determined as 55 +/- 1, 55 +/- 1 and 78 +/- 3 M-1 s(-1), respectively. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：2384 / 2394

页数：11

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