Electrochemical Monitoring of Decolorization of Diazo Dye Evans Blue by Fenton Process under Anaerobic Conditions: Kinetics and Optimization

Arat C., Biçer E.

RUSSIAN JOURNAL OF ELECTROCHEMISTRY, cilt.51, sa.8, ss.730-742, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 51 Sayı: 8
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1134/s1023193515080029
  • Dergi Adı: RUSSIAN JOURNAL OF ELECTROCHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.730-742
  • Anahtar Kelimeler: Evans blue, Fenton process, anaerobic media, decolorization, kinetics, voltammetry, AZO-DYE, AQUEOUS-SOLUTION, CARDIOVASCULAR-DISEASE, SYNTHETIC DYES, MERCURY, IRON, OXIDATION, DEGRADATION, CORONARY, PARAMETERS
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

The decolorization of Evans Blue (EB), a diazo dye, by Fenton process under anaerobic conditions has been investigated using cyclic voltammetry technique. Effects of solution pH, concentrations of H2O2, Fe2+ and EB on the decolorization of EB have also been studied. About 98.9% decolorization was found under the optimal conditions [EB] : [Fe2+] : [H2O2] = 1 : 1.9 : 4.7 and [H2O2]/[Fe2+] = 2.5 at pH 2 in 403 seconds. The kinetic data at pH 2 revealed that Behnajady-Modirshahla-Ghanbery (BMG) model was more favorable to describe the decolorization of EB than the zero-, first- and second- order kinetic models. Our experimental results will provide a fundamental knowledge for the more effective treatment of EB in a short time by Fenton's reagent.