New catalyst systems for the degradation of chlorophenols

Temel N. K., Sokmen M.

DESALINATION, vol.281, pp.209-214, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 281
  • Publication Date: 2011
  • Doi Number: 10.1016/j.desal.2011.07.066
  • Journal Name: DESALINATION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.209-214
  • Karadeniz Technical University Affiliated: Yes

Abstract

The aim of this study is to investigate new catalyst systems for the oxidative degradation of chlorophenol (CP) derivatives that have been classified as first-degree toxic pollutants. Oxidative degradation and degradation products of chlorinated phenols, namely 4-chlorophenol, 2,4-dichlorophenol and 2,4,6-trichlorophenol, are discussed in detail. Homogenous catalyst systems Fenton [Fe(II)/H2O2) and Fenton-like [Cu(II)/H2O2 and V (IV)/H2O2] methods were employed at higher CP concentrations (1 x 10(-2) mol/L). Heterogeneous catalyst systems titanium dioxide [TiO2/UV) and silver loaded titanium dioxide [Ag-TiO2/UV] processes were also investigated at lower concentrations. Chemical oxygen demand (COD), which is defined as oxygen equivalent of organic matter before and after degradation system was determined.