Goethite as a more effective iron dosage source for mineralization of organic pollutants by electro-Fenton process |
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| Affiliation: | 1. Departamento de Química Física, Instituto de Electroquímica, Universidad de Alicante, Ap. 99, 03080 Alicante, Spain;2. MATGAS Research Centre, Universidad Autónoma de Barcelona, 08193 Bellaterra, Barcelona, Spain;1. School of Environment Science and Engineering, Donghua University, Shanghai 201620, PR China;2. Shanghai Institution of Pollution Control and Ecological Security, Shanghai 200092, PR China;3. State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, PR China;4. School of Computer Science and Technology, Donghua University, Shanghai 201620, PR China;1. College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China;2. College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;1. Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China;2. Shanghai Institute of Pollution Control and Ecological Security, 1239 Siping Road, Shanghai, 200092, China;3. State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China;4. Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing, 100048, China;5. Institute of Biosciences, Freiberg University of Mining and Technology, Freiberg, 09599, Germany;1. Département de chimie Faculté des Sciences de Gabès, Cité Erriadh, Université de Gabès, 6027 Gabès, Tunisia;2. Université Paris-Est, Laboratoire Géomatériaux et Environnement, EA 4508, UPEM, 5 Bd Descartes, 77454 Marne-la-Vallée, Cedex 2, France;3. Laboratori d''Electroquímica dels Materials i del Medi Ambient, Departament de Química Física, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain;4. Département de chimie Faculté des Sciences de Bizerte, Cité Zarzouna, Université de Carthage, Tunisia |
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| Abstract: | The electro-Fenton process is an electrochemical method for wastewater treatment based on the production of hydroxyl radicals via H2O2 generation in the presence of ferrous ions. The aim of this work is to show the use of a new mineral iron dosage source (goethite, α-FeOOH) for electro-Fenton process that achieves a more efficient mineralization treatment. Our new proposed Goethite catalyzed electro-Fenton (GEF) process yields 95% of mineralization for an organic model pollutant such as aniline under optimum standard electro-Fenton (SEF) conditions. For that, GEF process uses only 2 ppm of soluble iron, compared with the 55 ppm of soluble iron used by SEF process. In order to show the potential scope of GEF process, the effect of goethite concentration, solution conductivity, solution pH, temperature, and applied current density are studied in detail. |
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