Optimisation of transformation kinetic of fenamiphos in aqueous media using experimental design

The intensive use of pesticides in modern agriculture has led to serious problems in the quality of superficial or underground water,which led to the development of diseases and destruction of fauna and flora. water pollution by these pesticides is a reality more and more present in morocco that requires control and elimination of these compounds in the aqueous medium. therefore,it is important to take interest in their ability to be degraded and the degradation pathway. pesticides are only partially degraded in the field and transformation products are formed which can also be found in groundwater or rivers. the downside of partial degradation is that transformation products are often more mobile than their parent compound,can be more persistent and even more toxic; inducing the increase of total contamination. in this study,we focused on fenamiphos as pesticide. this product belongs to the chemical family of organophosphates and it is widely used as an insecticide and nematicide on a number of crops. fenamiphos oxidize on fenamiphos sulfoxide and fenamiphos sulfone that are more toxic and persistent. to determine the main effects and interactions of various parameters (ph,concentration (fenamiphos / fe2+ ions) on the effectiveness of the oxidation process,a kinetic of the fenamiphos transformation in aqueous medium has been studied to determinate the conditions for the oxidation of fenamiphos using experimental design.