Juan M. Peralta‐Hernández, Enric Brillas
OH from photo-Fenton reaction and photolysis of final Fe(III)-carboxylate species. Fast degradation was achieved at pH = 3.0 by homogeneous photo-Fenton upon UVC light and at pH = 7.0 by solar heterogeneous photo-Fenton. Combined processes like photocatalysis/photo-Fenton were more effective in removing pesticides than the individual ones. Pesticides in real wastewater were more slowly remediated than in pure water by heterogeneous Fenton and photo-Fenton. Positive Fenton treatments were applied to soils contaminated with pesticides, using activators/oxidants added to soil or soil washing effluents. The toxicity analysis of treated pesticide solutions by predictive programs of primary by-products and experimental assessment with microalgae, bacteria, and plants is detailed. The scaling up for industrial pesticide wastewaters is discussed as the main challenge of these treatments.