Benzene Removal from Aqueous Solutions by Heterogeneous Catalytic Ozonation Process with Magnesium Oxide Nanoparticles

Ultrasound-Assisted Catalytic Ozonation-Based Treatment of Rare-Earth Processing Effluent Containing Ammonium Thiocyanate (NH4SCN)

“…Catalytic ozonation uses catalysts to accelerate the dissociation of ozone enhancing hydroxyl radical production, which can increase the oxidation rate of pollutants. 40 The catalytic ozonation degradation pathways reported in the literature state that the degradation can be possible by two ways. In the first way, the pollutant is adsorbed on the catalyst surface, and the adsorbed pollutant on the oxidized catalyst surface gets involved in the electron-transfer reaction to form radical species which are easily desorbed from catalyst and successively oxidized by Ozone or OH radicals in the bulk solution.…”

Catalytic Ozonation in Pulp and Paper Industry Wastewater Treatment: A Bibliometric Analysis

“…In another study, both ozone and oxalic acids are adsorbed on the surface of the catalyst at pH 2.5, followed by a reaction between the two moieties [50]. In another example, photocatalytic oxidation was proved to be extremely efficient at pH 10 in removing oxalic acid from water in the presence of oxygen [51]. According to scientists, hydroxyl radicals are produced on the hydroxylated surface of nano-TiO 2, and the neutral hydroxyls are responsible for producing hydroxyl radicals [52].…”

Sorptive removal versus catalytic degradation of aqueous BTEX: a comprehensive review from the perspective of life-cycle assessment

“…The O 3 /MgO system removed up to 99.3% B in 50 min, which was 1.61 times higher than the non-catalyzed ozonation process. 103 This enhanced removal of B after the addition of MgO was due to the direct oxidation of O 3 that produces abundant reactive radicals. The calculated operational cost ($ per m 3 ) of O 3 /UV, O 3 , O 3 /H 2 O 2 /UV, and TiO 2 /UV/H 2 O 2 /O 3 was 3.85, 16.5, 17.3, and 17.4, respectively.…”