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Mechanism of Photo-Fenton Degradation of Ethanol and PVA

LEI Lecheng; SHEN Xueyou; HE Feng   

  1. Department of Environmental Engineering, Zhejiang University, Hangzhou,310027, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2003-10-28 Published:2003-10-28
  • Contact: LEI Lecheng

乙醇和PVA的光助Fenton降解机理

雷乐成; 沈学优; 何锋   

  1. Department of Environmental Engineering, Zhejiang University, Hangzhou,310027, China
  • 通讯作者: 雷乐成

Abstract: Contrast degradation experiments between ethanol and polyvinyl alcohol (PVA) were conducted
during H2O2, UV/H2O2, Fenton, and Photo-Fenton processes in this study. UV/VIS spectra
showed. that complexes between Fe(Ⅲ) and organics were easily formed and degraded within
reaction time. Compared with the degradation of complex, hydroxyl radicals acted weakly in
Fenton or Photo-Fenton process. Hydroxyl radicals involved in Photo-Fenton process were
deemed to be generated from the split decomposition of H2O2, photolysis of Fe3+/aq, and
degradation of hydrated Fe(Ⅳ)-complex but not traditional Fenton reaction. Experimental
evidence to support this point was presented in this paper.

Key words: mechanism, Fenton reaction, oxidation

摘要: Contrast degradation experiments between ethanol and polyvinyl alcohol (PVA) were conducted
during H2O2, UV/H2O2, Fenton, and Photo-Fenton processes in this study. UV/VIS spectra
showed. that complexes between Fe(Ⅲ) and organics were easily formed and degraded within
reaction time. Compared with the degradation of complex, hydroxyl radicals acted weakly in
Fenton or Photo-Fenton process. Hydroxyl radicals involved in Photo-Fenton process were
deemed to be generated from the split decomposition of H2O2, photolysis of Fe3+/aq, and
degradation of hydrated Fe(Ⅳ)-complex but not traditional Fenton reaction. Experimental
evidence to support this point was presented in this paper.

关键词: mechanism;Fenton reaction;oxidation