A combined process of adsorption and Fenton-like oxidation for furfural removal using zero-valent iron residue

Furong Li, Jianguo Bao, Tian C. Zhang, Yutian Lei

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

In this study, the feasibility of using a combined adsorption and Fenton-like oxidation process (with zero-valent iron (ZVI) residue from heat wraps as an absorbent and catalyst) to remove furfural in the solution was evaluated. The influencing parameters (e.g. pH, H2O2 concentration, initial furfural concentration) and the reusability of ZVI residue (to replace the iron powder) were estimated. The ZVI residue was found to have much better adsorption effect on furfural at pH 2.0 compared with pH 6.7. For Fenton-like reaction alone with ZVI residue, the highest furfural removal of 97.5% was observed at the concentration of 0.176 mol/L H2O2, and all of the samples had >80% removal efficiency at different initial furfural concentrations of 2, 10, 20, 30 and 40 mmol/L. However, with a combined adsorption and Fenton-like oxidation, the removal efficiency of furfural was nearly 100% for all treatments. The ZVI residue used for furfural removal was much better than that of iron powder in the Fenton-like reaction at a seven-cycle experiment. This study suggests the combined process of adsorption and Fenton-like oxidation using ZVI residue is effective for the treatment of furfural in the liquid.

Original languageEnglish (US)
Pages (from-to)3103-3111
Number of pages9
JournalEnvironmental Technology (United Kingdom)
Volume36
Issue number24
DOIs
StatePublished - Dec 17 2015

Keywords

  • Fenton-like reaction
  • adsorption
  • furfural
  • heat wrap
  • zero-valent iron (ZVI)

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal

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