Study of interactions organic polluant/clay Anionic for environmental protection

Abstract

Because of the increaseduse of pesticides in order to satisfy the economic needsin the agriculture production which  is more and intensive. Many studies are done on the consequence of these pesticides on the soil and their pollution treatment [1]. The interest of the double lamellar hydroxides (HDL) in this field consist first of all in their exchange  properties which offer  the caught of the pollutants;  on  the other hand,in their use as a model of soil to the comprehension the pollution phenomenon . The present work deals with how to catch. The pesticide Methomylwithin the phase Mg_{1_x}Al₈(OH₂)[X_nH₂o]. The isothermmodelisation absorption by Freundlich equation, completed RX and IR analyses permit to precise the interaction mechanism[4]. The isotherm shape varies depending on the intercalary nature. To move from type S to the type L (Giles and al classification) with in the some isotherm is attributed to the interaction first, of the surface then with the whole solid. The type S suggests the interactions between the Methomyl molecules are more important.