Factors Influencing Imazapyr Herbicide Removal from Wastewater Using Photocatalytic Ozonation

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Bougarrani S., El Azzouzi L., Akel S., Latrach L., Bouziani A., El Azzouzi M.

ACTA CHIMICA SLOVENICA, vol.65, no.2, pp.470-474, 2018 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 65 Issue: 2
  • Publication Date: 2018
  • Doi Number: 10.17344/acsi.2018.4297
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.470-474
  • Middle East Technical University Affiliated: No


This study investigates the degradation of imazapyr herbicide from wastewater by photocatalytic ozonation using TiO2 as a semiconductor. Effects of operational parameters on imazapyr removal efficiency including TiO2 dosing, initial herbicide concentration and pH were also studied. Obtained results showed that more than 90% of removal efficiency representing the disappearance of imazapyr was maintained until 7 mu M in the presence of 200 mgL(-1) of UV100-TiO2. Otherwise, the degradation of imazapyr followed the first-order kinetics with a photocatalytic rate constant of 0.247 min(-1), and complete degradation was achieved within 20 min using photocatalytic ozonation for 5 mu M of Imazapyr at pH 7.