title: Advanced oxidation processes: mechanistic aspects.
abstract: The reactive intermediate in Advanced Oxidation Processes (AOPs) is the *OH radical. It may be generated by various approaches such as the Fenton reaction (Fe2+/H2O2), photo-Fenton reaction (Fe3+/H2O2/hnu), UV/H2O2, peroxone reaction (O3/H2O2), O3/UV, O3/activated carbon, O3/dissolved organic carbon (DOC) of water matrix, ionizing radiation, vacuum UV, and ultrasound. The underlying reactions and *OH formation efficiencies are discussed. The key reactions of *OH radicals also addressed in this review.
authors.affiliation: Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, 45413, Mülheim an der Ruhr, Germany. clemens@vonsonntag.de
authors.forename: C
authors.initials: C
authors.lastname: von Sonntag
mesh_terms: D002384:Catalysis / Q000528:radiation effects; D006861:Hydrogen Peroxide / Q000737:chemistry*; D017665:Hydroxyl Radical / Q000737:chemistry*; D007501:Iron / Q000737:chemistry; D010084:Oxidation-Reduction / Q000528:radiation effects; D010126:Ozone / Q000737:chemistry; D014466:Ultraviolet Rays; D018508:Water Purification / Q000379:methods*
chemical_list: C045076:Fenton's reagent; D017665:Hydroxyl Radical; D010126:Ozone; D006861:Hydrogen Peroxide; D007501:Iron