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

被引：56

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

页码：1997 / 2006

页数：10

共 18 条

[1] OXIDATION OF PHENOLS IN WATER BY HYDROGEN-PEROXIDE ON ALUMINE SUPPORTED IRON [J].