Remediation of sulfidic wastewater by catalytic oxidation with hydrogen peroxide.
Oxidation of sulfide in aqueous solution by hydrogen peroxide was investigated in the presence of hydrated ferric oxide catalyst. The ferric oxide catalyst was synthesized by sol gel technique from ferric chloride and ammonia. The synthesized catalyst was characterized by Fourier transform infrared spectroscopy, X-Ray diffraction analysis, scanning electrom microscope and energy dispersive X-ray analysis. The catalyst was quite effective in oxidizing the sulfide by hydrogen peroxide. The effects of sulfide concentration, catalyst loading, H2O2 dosing and temperature on the kinetics of sulfide oxidation were investigated. Kinetic equations and activation energies for the catalytic oxidation reaction were calculated based on the experimental results.
Department of Chemical Engineering, Universiti Teknologi PETRONAS, 31750 Tronoh, Perak, Malaysia. naveedali_ahmad@yahoo.com
Naveed
N
Ahmad
Saikat
S
Maitra
Binay Kanti
BK
Dutta
Farooq
F
Ahmad
D002384:Catalysis; D005290:Ferric Compounds / Q000138:chemical synthesis*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D010084:Oxidation-Reduction; D017550:Spectroscopy, Fourier Transform Infrared; D013440:Sulfides / Q000737:chemistry*; D018505:Waste Management / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D014961:X-Ray Diffraction
D005290:Ferric Compounds; D013440:Sulfides; D014874:Water Pollutants, Chemical; C000499:ferric oxide; D006861:Hydrogen Peroxide; C033479:sodium sulfide