Preparation of a novel γ-FeOOH-GAC nano composite for decolorization of textile wastewater by photo Fenton-like process in a continuous reactor

Abstract For the first time, lepidocrocite-granular activated carbon (γ-FeOOH-GAC) nano composite was prepared and characterized. The prepared composite was used in the decolorization of textile wastewater containing reactive orange 29 by photo Fenton-like process in a continuous reactor. The influence of wastewater flow rate, H2O2 concentration and pH in decolorization process was studied using response surface methodology. The optimum conditions were flow rate of 1.98 mL min−1, H2O2 concentration of 3.25 mM and pH of 1.98. The decolorization ability of γ-FeOOH-GAC/H2O2/UV process was compared with that of γ-FeOOH-GAC/UV, γ-FeOOH-GAC/H2O2, γ-FeOOH-GAC, H2O2/UV, and UV processes at the optimum conditions. The obtained results indicated that γ-FeOOH-GAC/H2O2/UV process was more effective than other processes in the decolorization of the wastewater.

[1]  Jose A. Casas,et al.  An overview of the application of Fenton oxidation to industrial wastewaters treatment , 2008 .

[2]  T. Kojima,et al.  Treatment of synthetic dyes wastewater utilizing a magnetically separable photocatalyst (TiO2/SiO2/Fe3O4): parametric and kinetic studies. , 2009 .

[3]  D. C. Trivedi,et al.  Chemical and electrochemical depositions of platinum group metals and their applications , 2005 .

[4]  Hanqing Yu,et al.  Optimization of the coagulation-flocculation process for pulp mill wastewater treatment using a combination of uniform design and response surface methodology. , 2011, Water research.

[5]  Stefan H. Bossmann,et al.  New Evidence against Hydroxyl Radicals as Reactive Intermediates in the Thermal and Photochemically Enhanced Fenton Reactions , 1998 .

[6]  Yongmin Chang,et al.  Magnetic properties of needle-like alpha-FeOOH and gamma-FeOOH nanoparticles , 2004 .

[7]  Vincenzo Belgiorno,et al.  Acute toxicity removal in textile finishing wastewater by Fenton's oxidation, ozone and coagulation-flocculation processes. , 2005, Water research.

[8]  Shao-jie Wang,et al.  Study of adsorption-assisted photocatalytic oxidation of benzene with TiO2/SiO2 nanocomposites , 2013 .

[9]  M. L. Ferreira,et al.  Mechanisms of radical generation in the removal of phenol derivatives and pigments using different Fe-based catalytic systems , 2012 .

[10]  A. Khataee,et al.  Degradation of amoxicillin in aqueous solution using nanolepidocrocite chips/H2O2/UV: Optimization and kinetics studies , 2014 .

[11]  Ming-Chun Lu,et al.  Catalytic degradation of nitroaromatic explosives with Fenton's reagent , 2007 .

[12]  K. Muthukumar,et al.  Advanced oxidation of phenol: A comparison between Fenton, electro-Fenton, sono-electro-Fenton and photo-electro-Fenton processes , 2012 .

[13]  Maodu Chen,et al.  Oxidative degradation of dinitro butyl phenol (DNBP) utilizing hydrogen peroxide and solar light over a Al2O3-supported Fe(III)-5-sulfosalicylic acid (ssal) catalyst. , 2010, Journal of hazardous materials.

[14]  C. Costa,et al.  Modelling of the synthetic dye Orange II degradation using Fenton's reagent : From batch to continuous reactor operation , 2009 .

[15]  P. Dillmann,et al.  Study of lepidocrocite γ-FeOOH electrochemical reduction in neutral and slightly alkaline solutions at 25 °C , 2005 .

[16]  Li Yang,et al.  A ternary hybrid CdS/Pt-TiO2 nanotube structure for photoelectrocatalytic bactericidal effects on Escherichia coli. , 2010, Biomaterials.

[17]  Sheng-Peng Sun,et al.  p-Nitrophenol degradation by a heterogeneous Fenton-like reaction on nano-magnetite: Process optimization, kinetics, and degradation pathways , 2011 .

[18]  A. Anderko.  Modeling of Aqueous Corrosion , 2010 .

[19]  Shaoqi Zhou,et al.  Modeling the oxidation kinetics of Fenton's process on the degradation of humic acid. , 2010, Journal of hazardous materials.

[20]  P. Ciambelli,et al.  Structured catalysts for photo-Fenton oxidation of acetic acid , 2011 .

[21]  H. Kušić,et al.  Modeling dye degradation kinetic using dark- and photo-Fenton type processes. , 2009 .

[22]  Hui Zhang,et al.  Treatment of landfill leachate by Fenton's reagent in a continuous stirred tank reactor. , 2006, Journal of hazardous materials.

[23]  V Kavitha,et al.  Destruction of cresols by Fenton oxidation process. , 2005, Water research.

[24]  Tugba Olmez-Hanci,et al.  Treatment of azo dye production wastewaters using Photo-Fenton-like advanced oxidation processes: Optimization by response surface methodology , 2009 .

[25]  S. Aber,et al.  Removal of COD from Industrial Effluent Containing Indigo Dye Using Adsorption Method by Activated Carbon Cloth: Optimization, Kinetic, and Isotherm Studies , 2012 .

[26]  T. Yen,et al.  Naval derusting wastewater containing high concentration of iron, treated in UV photo-Fenton-like oxidation. , 2010, Journal of environmental sciences.