Mechanism of photodegradation of aqueous organic pollutants. 2. Measurement of the primary rate constants for reaction of hydroxyl radicals with benzene and some halobenzenes using an EPR spin-trapping method following the photolysis of hydrogen peroxide

Treatment technologies for aqueous perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA)

“…3.1 Advanced oxidation processes (AOPs)-Oxygen-containing radicals For particularily recalcitrant organics, AOPs which utilize the hydroxyl radical, ozone, or O-atom are a viable solution [88,[118][119][120]. Hydroxyl radical can be generated through hydrogen peroxide photolysis [121], ozonation [122,123], photo-Fenton's [124], sonolysis [125], and peroxone chemistry [126]. Hydroxyl radical normally reacts with saturated organics through an H-atom abstraction to form water (Eq.…”

Determination of the adsorption capacity of activated carbon made from coffee grounds by chemical activation with ZnCl and HPO

“…To remove organic pollutants and/or dyes many treatments have been proposed, such as coagulation, sedimentation, filtration, oxidation (KMnO 4 , H 2 O 2 , Cl 2 , O 3 ), adsorption [6][7][8][9][10][11]. Biological treatment processes are reported to be efficient in the reduction of organic pollutants concentration, but ineffective in removing colour [12,13].…”

Preliminary Study on the Photoproduction of Hydroxyl Radicals in Aqueous Solution with Aldrich Humic Acid, Algae and Fe(III) Under High-pressure Mercury Lamp Irradiation

“…Given the high reactivity of benzene with 'OH (27,28), virtually all the 'OH should have been scavenged by benzene under our experimental conditions. The initial attack of hydroxyl is reported to produce a hydroxycyclohexadienyl radical (29) that has a high affinity for 0 2 (30) and can form the corresponding peroxyl radical as shown below, in Reactions 5 and 6.…”