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

Shanshan Chou, Ch-Hpin Huang*, Yao Hui Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

The aim of this study was to investigate the effect of Fe2+ on the catalytic oxidation in the fluidized-bed reactor (FBR) applying supported γ-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 γ-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 γ-FeOOH as well as the oxidation of BA, was proposed based on the experimental results.

Original languageEnglish
Pages (from-to)1997-2006
Number of pages10
JournalChemosphere
Volume39
Issue number12
DOIs
StatePublished - 1 Nov 1999

Keywords

  • Catalyst
  • Crystallization
  • Fluidized-bed
  • Hydrogen peroxide
  • Iron oxide
  • Oxidation

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