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Related Experiment Videos

Aniline degradation by electrocatalytic oxidation.

Yijiu Li1, Feng Wang, Guoding Zhou

  • 1Department of Chemistry, Tongji University, Siping Road 1239, 200092, People's Republic of, Shanghai, China.

Chemosphere
|October 11, 2003
PubMed
Summary

Electrocatalytic oxidation effectively degrades aniline in alkaline solutions. This study identifies key intermediates and proposes a reaction pathway for aniline breakdown to carbon dioxide.

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Area of Science:

  • Environmental Chemistry
  • Electrochemistry
  • Oxidation Processes

Background:

  • Aniline is a widely used industrial chemical and a significant environmental pollutant.
  • Effective methods for aniline degradation are crucial for environmental protection.

Purpose of the Study:

  • To investigate the electrocatalytic oxidation of aniline in an alkaline medium.
  • To identify degradation intermediates and elucidate the reaction mechanism.

Main Methods:

  • Electrochemical reactor with SnO(2)-Sb(2)O(3)-PtO anode and Ti cathode.
  • Detection of hydroxyl radicals using salicylic acid and phenol.
  • Identification of intermediates via gas chromatography-mass spectrometry.

Main Results:

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  • Hydroxyl radicals were confirmed as key oxidizing species.
  • Intermediates such as dianiline, 4-anilino phenol, and azobenzene were identified.
  • Electrocatalytic oxidation proved effective for aniline degradation.

Conclusions:

  • Electrocatalytic oxidation is a viable method for aniline wastewater treatment.
  • A reaction pathway for aniline degradation to CO(2) was proposed.