Loading...

Kinetics Investigation of the Degradation of Environmental Pollutants by Electro-Fenton Processes Using Iron Vanadate Nanoparticles

Maghbool, Roghaye | 2019

791 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 52276 (03)
  4. University: Sharif University of Technology
  5. Department: Chemistry
  6. Advisor(s): Rahman Setayesh, Shahrbanoo
  7. Abstract:
  8. Nanocomposite FeVO4/CeO2 was synthesized by hydrothermal method and was applied for removal of methyl orange. This nanocomposite was characterized by SEM, FT-IR, XRD, BET methods. SEM images showed that FeVO4 nanorode decorated on CeO2 spherical particles. The results of XRD patterns confirmed the triclinic structure for Fe(III)vanadate and the cubic fluorite structure for cerium oxide. The surface area of FeVO4, CeO2 and FeVO4/CeO2 was determined by BET analysis which the results represented an increase in surface area in nanocomposite using cerium oxide as support. The electro-Fenton reaction was performed in undivided electrochemical reactor using stainless steel electrodes and the influence of parameters such as electric current intensity, initial pH, pollutant concentration, catalyst content on the process of degradation was investigated and the optimum conditions were determined. Under optimum conditions of reaction ( pH =3 , [MO]=30 ppm, I=0.2A, catalyst=0.1g ), the dye degradation efficiency of 96% and COD removal 70% were obtained after 60 min. High concentration of NaCl, NaNO3 and Na2SO4 under conditions of (pH =3 , [MO]=100 ppm, I=0.2A, catalyst=0.1g ) were applied and showed that the efficiency of degradation were increased. Also, for evaluating the efficiency of electro-Fenton method for industrial, two real sample (lake water and tap water) were used at optimum conditions and neutral pH which results 90% degradation of methyl orange in 60 min for tap water and 98% degradation in 15 min for lake water were obtained
  9. Keywords:
  10. Advanced Electrochemical Oxidation ; Iron Vanadate Based Cerium Oxid Nanocomposite ; Electro-Fenton Method ; Methyl Orange ; Dye Degradation ; Kinetic Degradation ; Environmental Pollutant

 Digital Object List

 Bookmark

No TOC