title: Sequential two-column electro-Fenton-photolytic reactor for the treatment of winery wastewater.
abstract: The high amount of winery wastewaters produced each year makes their treatment a priority issue due to their problematic characteristics such as acid pH, high concentration of organic load and colourful compounds. Furthermore, some of these effluents can have dissolved pesticides, due to the previous grape treatments, which are recalcitrant to conventional treatments. Recently, photo-electro-Fenton process has been reported as an effective procedure to mineralize different organic contaminants and a promising technology for the treatment of these complex matrixes. However, the reactors available for applying this process are scarce and they show several limitations. In this study, a sequential two-column reactor for the photo-electro-Fenton treatment was designed and evaluated for the treatment of different pesticides, pirimicarb and pyrimethanil, used in wine production. Both studied pesticides were efficiently removed, and the transformation products were determined. Finally, the treatment of a complex aqueous matrix composed by winery wastewater and the previously studied pesticides was carried out in the designed sequential reactor. The high removals of TOC and COD reached and the low energy consumption demonstrated the efficiency of this new configuration.
authors: Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain.
authors: A M
authors: AM
authors: Díez
authors: Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain.
authors: M A
authors: MA
authors: Sanromán
authors: Department of Chemical Engineering, University of Vigo, Campus As Lagoas-Marcosende, 36310, Vigo, Spain. mcurras@uvigo.es.
authors: M
authors: http://orcid.org/0000-0001-9921-1278
authors: M
authors: Pazos
mesh_terms: D006861:Hydrogen Peroxide; D007220:Industrial Waste / Q000032:analysis; D007501:Iron; D010575:Pesticides; D010782:Photolysis; D027843:Vitis; D014865:Waste Disposal, Fluid / Q000379:methods*; D018508:Water Purification / Q000379:methods*; D014920:Wine
chemical_list: C045076:Fenton's reagent; D007220:Industrial Waste; D010575:Pesticides; D006861:Hydrogen Peroxide; D007501:Iron
keywords: Pesticides; Photo-electro-Fenton; Pirimicarb; Pyrimethanil; White wine