title: [Degradation of orange IV dye solution catalyzed by Fe (NO3)3-(NH4)2S2O8 modified GAC in the presence of H2O2].
abstract: This study was designed to investigate the catalytic oxidation performance of modified GAC by Fe(NO3), and (NH4)2S2O8 in the process of H2O2. The effect of the initial concentration of H2O2, initial dye concentration, catalyst dosage, initial pH and temperature on the reaction was discussed. The results show that the catalyst of Fe/S/GAC has a better catalytic reactivity to decompose Orange IV compared with that of Fe/GAC. The catalyst could decompose H2O2 to degrade Orange IV effectively at pH 2.4-9.1. The removal rate of Orange IV increased with the increase of catalyst dosage. With the decrease of dye concentration, the reaction rate became faster, this reaction followed the second-order reaction kinetics with activation energy (Ea) of 68.19 kJ x mol(-1). Reuse of catalyst did not decrease the removal rate. Orange IV degradation mainly followed OH mechanism.
authors.affiliation: School of Chemical Engineering, Northeast Dianli University, Jilin 132012, China. zhangyingjiejls@yahoo.com.cn
authors.forename: Ying-Jie
authors.initials: YJ
authors.lastname: Zhang
authors.forename: Shu-Fen
authors.initials: SF
authors.lastname: Xu
authors.forename: Xia
authors.initials: X
authors.lastname: Liao
authors.forename: Tian-Jing
authors.initials: TJ
authors.lastname: Cao
authors.forename: Rong
authors.initials: R
authors.lastname: Yang
authors.forename: Da-Peng
authors.initials: DP
authors.lastname: Li
mesh_terms: D000645:Ammonium Sulfate / Q000737:chemistry*; D001673:Biodegradation, Environmental; D002384:Catalysis; D002606:Charcoal / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D009566:Nitrates / Q000737:chemistry*; D010084:Oxidation-Reduction; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D004396:Coloring Agents; D005290:Ferric Compounds; D009566:Nitrates; D002606:Charcoal; C031276:ammonium peroxydisulfate; D006861:Hydrogen Peroxide; C025302:ferric nitrate; D000645:Ammonium Sulfate