title: Photoassisted Fenton degradation of phthalocyanine dyes from wastewater of printing industry using Fe(II)/γ-Al2O3 catalyst in up-flow fluidized-bed.
abstract: Fe(II)/γ-Al2O3 powders synthesized using the dipping method were produced from a mixed aqueous solution containing aluminium oxide (γ-Al2O3) and iron(II)-precursor (FeSO4), and used for photo-Fenton degradation of phthalocyanine dyes (PCS) under ultraviolet (UV) irradiation in an up-flow fluidized bed. The catalysts were characterized by XRD, ESCA, BET, EDS and SEM. The results showed that Fe(2+) ion was compounded on the γ-Al2O3 carrier. The effects of different reaction parameters such as catalyst activity, dosage and solution pH on the decolorization of PCS were assessed. Results indicated that maximum decolorization (more than 95%) of PCS occurred with 20 wt% Fe(II)/γ-Al2O3 catalyst (dosage of 60 g/L) using a combination of UV irradiation and heterogeneous Fenton system. The degradation efficiency of PCS increases as pH decreases, exhibiting a maximum efficiency at pH 3.5. The recycled catalyst was capable of repeating three runs without a significant decrease in treatment efficiency, and this demonstrated the stability and reusability of catalyst.
authors: Department of Design for Sustainable Environment, Mingdao University, Changhua 52345, Taiwan, Chinese Taipei.
authors: Hsuhui
authors: H
authors: Cheng
authors: Institute of Environment Engineering and Management, National Taipei University of Technology, Taiwan, Chinese Taipei.
authors: Shihjie
authors: S
authors: Chou
authors: Institute of Environment Engineering and Management, National Taipei University of Technology, Taiwan, Chinese Taipei. Electronic address: f10919@ntut.edu.tw.
authors: Shiaoshing
authors: S
authors: Chen
authors: Department of Design for Sustainable Environment, Mingdao University, Changhua 52345, Taiwan, Chinese Taipei.
authors: Chiajen
authors: C
authors: Yu
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D005296:Ferrous Compounds / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry*; D007220:Industrial Waste; D007501:Iron / Q000737:chemistry*; D054833:Isoindoles; D010782:Photolysis; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: C000592871:Fe(II) gamma-Al2O3; C045076:Fenton's reagent; D005296:Ferrous Compounds; D007211:Indoles; D007220:Industrial Waste; D054833:Isoindoles; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; D007501:Iron; D000537:Aluminum Oxide; C013647:phthalocyanine
keywords: Fe(II)/γ-Al(2)O(3) catalyst; fluidize; phthalocyanine dyes