Phenol oxidation kinetics in water solution using iron(3)-oxide-based nano-catalysts

Grigory Zelmanov, Raphael Semiat*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

The influence of inorganic ions (HCO3, PO4/HPO4/H2PO4, Cl, SO4, Ca, Na and Mg) on the advanced chemical oxidation process of organic compounds dissolved in water is reported here. The catalytic behavior of iron(3)-oxide-based nano-particles was investigated together with inorganic ions and hydrogen peroxide concentrations, and pH level. Phenol was chosen as a typical organic contaminant for this study as a simulating pollutant. The limiting concentrations of radical scavengers making the oxidation process inefficient were identified. The strong effect of concentration of radical scavengers HCO3, PO4/HPO4/H2PO4, the nano-catalyst and hydrogen peroxide concentrations, and pH on the phenol oxidation rate and lag time period before reaction starts was determined. It was shown that Cl, SO4, Ca, Na and Mg ions had no significant effect on the kinetics of phenol oxidation.

Original languageEnglish
Pages (from-to)3848-3856
Number of pages9
JournalWater Research
Volume42
Issue number14
DOIs
StatePublished - Aug 2008
Externally publishedYes

Keywords

  • Fenton-like process
  • Inorganic ions
  • Iron-oxide
  • Nano-catalyst
  • Organic pollutants
  • Phenol
  • Radical scavenger
  • Water treatment

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