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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.

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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 Paul Sabatier-Toulouse III - 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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