The role of multiwalled carbon nanotubes (MWCNTs) in the catalytic ozonation of atrazine

Xiaolei Fan, João Restivo, José J.M. Órfão, Manuel Fernando R. Pereira, Alexei A. Lapkin

Research output: Journal PublicationArticlepeer-review

59 Citations (Scopus)

Abstract

Multiwalled carbon nanotubes (MWCNTs) are used as catalysts in ozonation of atrazine in aqueous solutions. The catalyst changed the distribution of atrazine degradation intermediates, leading to the decrease in the effluent toxicity compared to non-catalytic ozonation and an increase in the overall mineralisation of atrazine. However, the overall rate of atrazine conversion was somewhat reduced in the presence of the nanotube catalyst (apparent rate constant: 0.233min-1 versus 0.143min-1 in the presence of the nanotubes). Detailed analysis of intermediates in catalysed and non-catalysed reactions allowed to propose the likely reaction pathway in the presence of the nanotubes.

Original languageEnglish
Pages (from-to)66-76
Number of pages11
JournalChemical Engineering Journal
Volume241
DOIs
Publication statusPublished - 1 Apr 2014
Externally publishedYes

Keywords

  • Advanced oxidation processes (AOPs)
  • Atrazine
  • Catalytic ozonation
  • Multiwalled carbon nanotubes (MWCNTs)

ASJC Scopus subject areas

  • Chemistry (all)
  • Environmental Chemistry
  • Chemical Engineering (all)
  • Industrial and Manufacturing Engineering

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