In the present research it was attempted to test the effectiveness of low frequency radiation's such as those produced by microwaves in the degradation of pollutants normally present in domestic and industrial effluent. In order to avoid undue temperature increase, the multiple irradiation method was used. The work was performed initially using the o- chlorophenol as target compound, then extending the applications to the other isomers, to a surfactant such as sodium dodecylbenzenesulphonate and an organophosphorous pesticide such as paraoxon and finally applying the methodology to the solution of a problem as that one of the environmental impact of expired drugs disposal. In all the cases the positive effect of microwaves on the photodegradation rate was evidenced.
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