title: Transformation characteristics of organic pollutants in Fered-Fenton process for dry-spun acrylic fiber wastewater treatment.
abstract: The Fered-Fenton process using Ti sheet as cathode and RuO2/Ti as anode was employed for the pretreatment of dry-spun acrylic fiber manufacturing wastewater. The effects of feeding mode and concentration of H2O2 on chemical oxygen demand (COD) removal efficiency as well as the biodegradability variation during the Fered-Fenton process were investigated. The feeding mode of H2O2 had significant influence on COD removal efficiency: the removal efficiency was 44.8% if all the 60.0 mM H2O2 was fed at once, while it could reach 54.1% if the total H2O2 was divided into six portions and fed six times. The biochemical oxygen demand/COD ratio increased from 0.29 to above 0.68 after 180 min treatment. The transformation characteristics of organic pollutants during the Fered-Fenton process were evaluated by using gas chromatography-mass spectrometry (GC-MS), Fourier transform infrared spectroscopy (FTIR) and fluorescence excitation-emission matrix (EEM) spectroscopy. Most of the refractory organic pollutants with aromatic structure or large molecular weight were decomposed during the Fered-Fenton process.
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Dayangfang 8, Anwai Beiyuan, Beijing 100012, China E-mail: songyh@craes.org.cn; Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Dayangfang 8, Anwai Beiyuan, Beijing 100012, China; Université de Toulouse, LISBP, INSA, 135 Avenue de Rangueil, 31077 Toulouse Cedex 4, France.
authors.forename: Jian
authors.initials: J
authors.lastname: Wei
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Dayangfang 8, Anwai Beiyuan, Beijing 100012, China E-mail: songyh@craes.org.cn; Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Dayangfang 8, Anwai Beiyuan, Beijing 100012, China.
authors.forename: Yonghui
authors.initials: Y
authors.lastname: Song
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Dayangfang 8, Anwai Beiyuan, Beijing 100012, China E-mail: songyh@craes.org.cn; Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Dayangfang 8, Anwai Beiyuan, Beijing 100012, China; Center for Environmental Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA.
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Meng
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Dayangfang 8, Anwai Beiyuan, Beijing 100012, China E-mail: songyh@craes.org.cn; Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Dayangfang 8, Anwai Beiyuan, Beijing 100012, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Tu
authors.affiliation: Université de Toulouse, LISBP, INSA, 135 Avenue de Rangueil, 31077 Toulouse Cedex 4, France.
authors.forename: Jean-Stéphane
authors.initials: JS
authors.lastname: Pic
mesh_terms: D001673:Biodegradation, Environmental; D057919:Biological Oxygen Demand Analysis; D004566:Electrodes; D008401:Gas Chromatography-Mass Spectrometry; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007220:Industrial Waste; D007501:Iron / Q000737:chemistry*; D010084:Oxidation-Reduction; D017975:Ruthenium Compounds; D017550:Spectroscopy, Fourier Transform Infrared; D013784:Textiles; D014025:Titanium; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D006861:Hydrogen Peroxide; D007220:Industrial Waste; D007501:Iron; D017975:Ruthenium Compounds; D014025:Titanium; D062065:Wastewater; D014874:Water Pollutants, Chemical; C045076:Fenton's reagent; C029017:ruthenium dioxide