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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
Experimental design methodology applied to electro-Fenton treatment for degradation of herbicide chlortoluron
Applied Catalysis B: Environmental, Volume 78, No. 3-4, Year 2008
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Description
The degradation of herbicide chlortoluron in aqueous medium by electro-Fenton process using a carbon felt cathode and a platinum anode was studied. The great oxidation ability of this process is due to the large production of hydroxyl radical (OH{radical dot}) by electrochemically induced Fenton's reagent. Hydroxyl radicals are very powerful oxidizing agents which react on organics up to complete mineralization. The influence of some experimental parameters such as initial concentration, current intensity and processing time on the degradation and mineralization rate of chlortoluron by hydroxyl radicals has been investigated. The evolution of chlortoluron concentration with processing time shows a pseudo first order kinetics (kabs = (4.8 ± 0.2) × 109 mol-1 L s-1). A Doehlert matrix was applied for determination of the optimal working conditions. Optimal parameters for maximum mineralization efficiency (TOC removal ratio of 98%) was achieved after 8 h of treatment using a chlortoluron initial concentration of 0.125 mM and an applied current of 300 mA. The mineralization of aqueous chlortoluron solutions was confirmed by identification of the end-products such as carboxylic acids and inorganic ions. Their evolution during electro-Fenton treatment was studied. © 2007 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Abdessalem, Aida Kesraoui
France, Marne-la-vallee
Université Gustave Eiffel
Tunisia, Tunis
Université de Tunis el Manar, Faculté Des Sciences de Tunis
Oturan, Nihal
France, Marne-la-vallee
Université Gustave Eiffel
Bellakhal, Nizar
Tunisia, Tunis
Université de Tunis el Manar, Faculté Des Sciences de Tunis
Tunisia, Tunis
University of Carthage, Institut National Des Sciences Appliquées et de Technologie
Dachraoui, Mohamed
Tunisia, Tunis
Université de Tunis el Manar, Faculté Des Sciences de Tunis
Oturan, Mehmet Ali
France, Marne-la-vallee
Université Gustave Eiffel
Statistics
Citations: 179
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1016/j.apcatb.2007.09.032
ISSN:
09263373
Research Areas
Environmental