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2039513 
Journal Article 
Electro-Fenton oxidation of Sunset Yellow FCF azo-dye in aqueous solutions 
Ghoneim, MM; El-Desoky, HS; Zidan, NM 
2011 
Yes 
Desalination
ISSN: 0011-9164 
Elsevier B.V. 
274 
1-3 
22-30 
English 
WOS:000291282600004 
This study was designed to investigate the oxidation (decolorization/degradation) of Sunset Yellow FCF azo-dye (which is largely used as colorant in common foods and drugs industries) in aqueous solutions with electro-generated Fenton's reagent (H(2)O(2)/Fe²⁺). This has been carried out at room temperature in an undivided electrochemical reactor of a RVC cathode and a platinum gauze anode. The progress of oxidation of Sunset Yellow FCF azo-dye by electro-generated Fenton's reagent has been monitored by UV-visible absorption, chemical oxygen demand (COD) and HPLC measurements. The results obtained under the optimal operational parameters (0.05M Na(2)SO₄ aqueous solution of pH 3 containing 0.1mM FeSO₄ while controlling the RVC cathode applied potential at -1.0V vs. SCE) showed that complete decolorization (100%) and significant mineralization (approximately 97%) of Sunset Yellow FCF azo-dye have been achieved by electro-Fenton oxidation for 120min. The rate of the oxidation reaction of Sunset Yellow FCF azo-dye in aqueous solution by electro-generated Fenton's reagent has been found to fit to pseudo first-order kinetics. 
Electro-Fenton oxidation; Sunset Yellow FCF azo-dye; Decolorization; Degradation; Mineralization