Oxidative degradation of Metolcarb by electro Fenton process

This study presents the degradation and the mineralization of Metolcarb or 3-methylphenyl methylcarbamate by electro Fenton process with volume cathode. This pesticide was treated using this cathode which is filled with graphite carbon granules. The solutions of Metolcarb were electrolyzed in an reactor of 1.4 liter which shows the performance and the efficiency of the process. Indeed, the effects of different parameters such as the initial concentration of Metolcarb and the intensity of applied current on the degradation kinetics of Metolcarb have been discussed as a function of time. The found results proved that the insecticide removal followed a pseudo first order. The competitive kinetics analysis of Metolcarb during its electrochemical treatment was carried out by using benzoic acid as a reference compound. The absolute rate constant for the oxidation of Metolcarb by hydroxyl radicals consequently is equal to 3.59 × 10 9 L mol − 1 s − 1 . The mineralization of Metolcarb in terms of total organic carbon was monitored during its electrolysis by the electro Fenton process. The organic carbon is then equivalent to the total carbon determined in reaction analysis. Carbon chains can therefore be formed. The various intermediates which are produced into the electrochemical processing of Metolcarb were determined by the mass spectrometry LC/MS. The biodegradation of Metolcarb has also been investigated in active clay.