title: Application of Fered-Fenton process for m-phenylenediamine degradation.
abstract: This study was undertaken to investigate the feasibility of applying the Fered-Fenton process to the degradation of m-phenylenediamine, by examining the effect of varying the initial H2O2 and Fe(2+) concentrations, the initial pH and electric current on the process efficiency. The degradation behavior of m-phenylenediamine was also compared to that of aniline. The Fered-Fenton reactor consists of anodes and cathodes with mesh-type titanium metal coated with IrO2/RuO2 and stainless steel, respectively. The experiments showed that m-phenylenediamine was rapidly degraded by the Fered-Fenton process. Initial pH of 3.2 is optimal for the removal of m-phenylenediamine and chemical oxygen demand (COD). m-Phenylenediamine and COD removal efficiencies increased with the increasing electrical current from 0 A to 4 A, and decreased with a further increase in electrical current. Optimum efficiency resulting in 100% degradation of m-phenylenediamine and elimination of 30% of COD was achieved at pH 3.2 at 60 min in the presence of 10 mM of m-phenylenediamine, 0.268 mM of Fe(2+), 43.6 mM of H2O2, and under a current of 4 A.
authors.affiliation: Department of Environmental Resources Management, Chia-Nan University of Pharmacy and Science, Tainan, Taiwan.
authors.forename: Chia-Chi
authors.initials: CC
authors.lastname: Su
authors.forename: Laarni V
authors.initials: LV
authors.lastname: Panopio
authors.forename: Genandrialine L
authors.initials: GL
authors.lastname: Peralta
authors.forename: Ming-Chun
authors.initials: MC
authors.lastname: Lu
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D057919:Biological Oxygen Demand Analysis; D002852:Chromatography, Ion Exchange; D004553:Electric Conductivity; D004563:Electrochemistry; D005296:Ferrous Compounds / Q000737:chemistry; D005410:Flame Ionization; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007501:Iron / Q000737:chemistry*; D010084:Oxidation-Reduction; D010655:Phenylenediamines / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical; D018508:Water Purification / Q000379:methods*
chemical_list: D000814:Aniline Compounds; C045076:Fenton's reagent; D005296:Ferrous Compounds; D010655:Phenylenediamines; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; D007501:Iron; C008381:3-phenylenediamine; C023650:aniline