A study of optimal experimental conditions in the photocatalytic degradation of an organophosphorous insecticide

BALKAYA N.

Environmental Technology (United Kingdom), vol.20, no.6, pp.617-623, 1999 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 20 Issue: 6
  • Publication Date: 1999
  • Doi Number: 10.1080/09593332008616856
  • Journal Name: Environmental Technology (United Kingdom)
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.617-623
  • Keywords: Organophosphorous insecticide, Photocatalytic degradation, Sunlight, Titanium dioxide
  • Ondokuz Mayıs University Affiliated: No

Abstract

The photodegradation in aqueous solutions of dimethyl 2,2 dichloro vinyl phosphate (common name DDVP or Dichlorvos), which is an organophosphorous insecticide, was studied by using illumination with UV lamp and solar exposure. TiO2 was used as a photocatalyst. In photocatalytic degradation, different TiO2 amounts, different illumination times and different pH values were examined in order to determine the optimal experimental conditions. DDVP removals at different initial DDVP concentrations under these conditions were investigated. In the photocatalytic degradation experiments, DDVP and PO43− (as orthophosphate) concentrations were determined. pH, potential and conductivity values were measured. © 1999 Taylor & Francis Group, LLC.