title: Performance of electrochemical oxidation and photocatalysis in terms of kinetics and energy consumption. New insights into the p-cresol degradation.
abstract: This work reports the comparative performance of two Advanced Oxidation Processes (AOPs), electrochemical oxidation and photocatalysis, as individual technological alternatives for the treatment of effluents containing p-cresol. First, the influence of operating parameters in the oxidation and mineralization yield was carried out together with kinetic analysis. Boron Doped Diamond (BDD), RuO2and Pt as anodic materials, Na2SO4and NaCl as supporting electrolytes and different current densities were evaluated in electrochemical oxidation whereas the effect of TiO2concentration and radiation was studied in the photocatalytic degradation. Then, the parameter Electrical Energy per Order (EEO) was calculated to compare the energy consumption in both AOPs, concluding that under the studied conditions the electrochemical treatment with BDD, Na2SO4and 125 A m-2showed the best energy efficiency, with an EEOof 5.83 kW h m-3order-1for p-cresol and 58.05 kW h m-3order-1for DOC removal, respectively.
authors.affiliation: Department of Chemical and Biomolecular Engineering, ETSIIT, University of Cantabria, Avda. de los Castros s/n, 39005, Santander, Spain.
authors.forename: Carlos J
authors.initials: CJ
authors.lastname: Escudero
authors.affiliation: Department of Chemical and Biomolecular Engineering, ETSIIT, University of Cantabria, Avda. de los Castros s/n, 39005, Santander, Spain.
authors.forename: Olalla
authors.initials: O
authors.lastname: Iglesias
authors.affiliation: Department of Chemical and Biomolecular Engineering, ETSIIT, University of Cantabria, Avda. de los Castros s/n, 39005, Santander, Spain.
authors.forename: Sara
authors.initials: S
authors.lastname: Dominguez
authors.affiliation: Department of Chemical and Biomolecular Engineering, ETSIIT, University of Cantabria, Avda. de los Castros s/n, 39005, Santander, Spain.
authors.forename: Maria J
authors.initials: MJ
authors.lastname: Rivero
authors.affiliation: Department of Chemical and Biomolecular Engineering, ETSIIT, University of Cantabria, Avda. de los Castros s/n, 39005, Santander, Spain. Electronic address: inmaculada.ortiz@unican.es.
authors.forename: Inmaculada
authors.initials: I
authors.lastname: Ortiz
mesh_terms: D001895:Boron; D018130:Diamond; D004566:Electrodes; D007700:Kinetics; D010084:Oxidation-Reduction
chemical_list: D018130:Diamond; D001895:Boron
keywords: Electrical Energy per Order (E(EO)); Electrochemical oxidation; Energy consumption; Light Emitting Diodes (LED); Photocatalysis; p-Cresol