Catalytic ozonation of atrazine and linuron on MnO /Al2O3 and MnO /SBA-15 in a fixed bed reactor

The Application and Reaction Mechanism of Catalytic Ozonation in Water Treatment

“…The structure and dispersion of the catalysts are affected by the preparation method, so good catalyst preparation process can significantly improve the catalytic activity. Currently, the supports for heterogeneous system are including Al 2 O 3 , TiO 2 , active carbon, and clay; the active components are Fe, Co, Mn, Cu, Ni and so on [35,37,44,[77][78][79][80][81][82][83][84][85][86]. The results show that the supported catalysts give excellent activity during the ozone decomposition.…”

CuO/SBA-15 catalyst for the catalytic ozonation of mesoxalic and oxalic acids. Water matrix effects

“…One is the decomposition of ozone by metal ions, yielding a high concentration of hydroxyl radicals. The other is the formation of a complex between the catalyst and organic molecules, followed by oxidation of the former [18,19,54,55]. In order to obtain an insight into the reaction mechanism, the influence of the catalyst on the kinetics of ozone decomposition at pH 8 was studied.…”

“…Another aspect to take into consideration in catalytic water ozonation is that the main inorganic anions found in surface water and STP effluent, such as chloride, sulphates and phosphates, are commonly poisons for the catalysts blocking the active catalytic sites. The most frequently used catalysts in ozonation are those based on manganese, copper, alumina, titanium and iron oxides as well as activated carbon, which acts as a radical promoter and support [12,16,[18][19][20][21][22][23][24].…”

Heterogeneous Catalytic Ozonation of Refinery Wastewater over Alumina-Supported Mn and Cu Oxides Catalyst

“…Rosal et al (Rosal et al 2010) studied catalytic ozonation of the herbicides atrazine and linuron in a fixed-bed reactor using alumina-supported manganese oxide catalysts (MnOx/Al 2 O 3 ). They proved that the MnOx/Al 2 O 3 catalyst improved the efficiency of the production of hydroxyl radicals from ozone with an average hydroxyl radical-to-ozone ratio as high as 10 −6 .…”