Effect of Fe2+ on catalytic oxidation in a fluidized bed reactor

被引：57
作者：
Chou, SS
Huang, CP [1 ]
Huang, YH
机构：
[1] Natl Chiao Tung Univ, Inst Environm Engn, Hsinchu, Taiwan
[2] Ind Technol Res Inst, Union Chem Labs, Hsinchu, Taiwan
来源：
CHEMOSPHERE | 1999年 / 39卷 / 12期
关键词：
catalyst; crystallization; fluidized-bed; hydrogen peroxide; iron oxide; oxidation;
D O I：
10.1016/S0045-6535(99)00089-2
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The aim of this study was to investigate the effect of Fe2+ on the catalytic oxidation in the fluidized-bed reactor (FBR) applying supported gamma-FeOOH as the carrier. Processes without Fe2+ addition and with Fe2+ addition (FBR-Fenton method) were performed on the oxidation of benzoic acid (BA) by H2O2. When Fe2+ was not added in the FBR, the high COD removal at low pH was caused by homogeneous catalysis of Fe2+ formed via reductive dissolution of gamma-FeOOH. In the FBR-Fenton process, both mineralization of organics and crystallization of Fe(III) were simultaneously well performed under adequate condition. The reaction mechanism, including the reductive dissolution and crystallization of gamma-FeOOH as well as the oxidation of BA, was proposed based on the experimental results. (C)1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1997 / 2006
页数：10
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