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Degradation of the herbicide imazapyr by Fenton reactions

Authors:	Ghizlaine?Kaichouh Nihal?Oturan Email author" target="_blank">Mehmet?A?Oturan Email author Kacem?El?Kacemi Abderrahim?El?Hourch

Institution:	(1) Laboratoire des Géomatériaux, CNRS FRE 2455, Université de Marne-la-Vallée, Champs-sur-Marne, France;(2) Laboratoire dElectrochimie et de Chimie Analytique, Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco

Abstract:	The degradation of the herbicide imazapyr has been carried out by three advanced oxidation processes involving iron ions as catalysts: Fentons reagent, photo-Fenton and electro-Fenton. We show that all processes are rapid and efficient. The kinetic rate constant was found to be k=5.4×10⁹ M^–1 s^–1. The mineralization of imazapyr is almost complete using the photo-Fenton and electro-Fenton processes.

Keywords:	Imazapyr Hydroxyl radicals Fentons reagent" target="_blank">gif" alt="rsquo" align="BASELINE" BORDER="0">s reagent Photo-Fenton Electro-Fenton Mineralization Chemical oxygen demand
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