Effects of the heterogeneous photo-Fenton oxidation and sulfate radical-based oxidation on atrazine degradation

ÇOKAY E.

DESALINATION AND WATER TREATMENT, cilt.252, ss.233-242, 2022 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 252
  • Basım Tarihi: 2022
  • Doi Numarası: 10.5004/dwt.2022.28277
  • Dergi Adı: DESALINATION AND WATER TREATMENT
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Biotechnology Research Abstracts, CAB Abstracts, Environment Index, Geobase, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.233-242
  • Anahtar Kelimeler: Atrazine, Box-Behnken, Ethylenediamine tetraacetic acid, Heterogeneous photo-Fenton oxidation, Sulfate radical-based oxidation
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Atrazine is an organic compound composed of s-triazine rings and has a long half-life which can be found in the sediment. It is prohibited to be included in the list of 45 priority pollutants specified in the European Union Water Framework Directive. In this study, it is possible to evaluate the treatment of atrazine using the heterogeneous photo-Fenton oxidation and sulfate radical-based oxidation. The Box-Behnken statistical method was used to investigate the effects of different concentrations of oxidant, catalyst, and chelating agent on atrazine removals. The maximum atrazine removal efficiency was obtained as 90% at persulfate 5 ppm, magnetite 1 ppm, ethylenediamine tetraacetic acid (EDTA) 1 ppm concentration by sulfate radical-based oxidation. While the maximum atrazine removal efficiency was obtained as 92% at hydrogen peroxide 5 ppm, magnetite 5 ppm, EDTA 4 ppm concentration by heterogeneous photo-Fenton process. Although atrazine removal efficiencies were nearly the same value at these processes, the requirement of magnetite and EDTA concentrations in sulfate radical-based oxidation is lower than the heterogeneous photo-Fenton process. In addition, the sulfate radical-based oxidation process is more suitable than the heterogeneous photo-Fenton process due to not formation of deethylatrazine metabolites, which is more toxic than atrazine compound.