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Electrochemical destruction of methidathion by anodic oxidation using a boron-doped diamond electrode

Hachami, Fatima and Salghi, Rachid and Mihit, Mohammed and Bazzi, Lahcen and Groenen Serrano, Karine and Hormatallah, Abder and Hilali, Mustapha Electrochemical destruction of methidathion by anodic oxidation using a boron-doped diamond electrode. (2007) International Scientific Journal for Alternative Energy and Ecology - ISJAEE. ISSN 1608-8298

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Abstract

The degradation of insecticide methidathion (organophosphorous pesticide) in aqueous medium has been studied by anodic oxidation using a boron-doped diamond (BDD) anode. The results obtained show that the application of electrolysis of pesticide allows to reduce the chemical oxygen demand (COD). For 2 % NaCl and 3 % NaCl solutions the achieved reduction was 85 % and 72 % respectively. In all cases, the pH of electrolysis was significantly reduced after 45 min. The COD of methidathion solution was observed to fall with pseudo first-order kinetics. An increasing of applied current leads to an increase of the rate of electrochemical oxidation process. The effect of temperature shows that for 25 °C and 65 °C the achieved reduction was 85 % and 66 % respectively. The activation energy indicates that the process of electrochemical degradation is a complex one.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Institut Agronomique et Vétérinaire Hassan II - IAV (MOROCCO)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Ecole nationale des sciences appliquées d'Agadir - ENSA (MOROCCO)
Other partners > Université Ibn Zohr Agadir (MOROCCO)
Laboratory name:
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Deposited By: Karine Groenen Serrano
Deposited On:10 Sep 2013 13:51

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