Photocatalytic degradation of trinitrotoluene and trinitrobenzene: influence of hydrogen peroxide

Degradation of 1,4-dioxane in water using TiO2 based photocatalytic and H2O2/UV processes

“…Many research groups have investigated the effect of hydrogen peroxide on photocatalytic degradation of organic contaminants under the optimised catalyst loading conditions [24][25][26]. Poulios et al [25] and Machado et al [26] observed an enhancement whereas others have reported a negative effect of adding hydrogen peroxide for degradation of some organic pollutants [27,28]. This theory was investigated for the degradation of 1,4-dioxane using the P25 and MPC catalysts at varying concentrations of H 2 O 2 .…”

The effect of solution pH and peroxide in the TiO2-induced photocatalysis of chlorinated aniline

“…For examples, Lu et al [4] have suggested various approaches to improve the TiO 2 catalyzed photoreaction performance including surface modification of TiO 2 by increasing surface area of TiO 2 , different UV irradiation sources selection and introducing additional external electron acceptor. Among those methods, Dillert et al [5] have showed that the addition of hydrogen peroxide, as an additional oxidant, could assist photocatalytic degradation in TiO 2 suspensions. Wang [6] has discovered that H 2 O 2 reacts to most of the organic contaminants with the hydroxyl radicals (HO • ), which are considered to be a major oxidizing intermediate for in aqueous solutions.…”

Advanced oxidation processes applied to tannery wastewater containing Direct Black 38—Elimination and degradation kinetics

“…Hydrogen peroxide can present beneficial [10,11] or detrimental effects [12,13] on the photocatalytic degradation of organic contaminants. However, most photocatalytic studies on the effect of hydrogen peroxide have reported an optimal concentration that is dependent on the characteristics of the wastewater (type and concentration of organic compounds, pH, presence and type of inorganic ions), the concentration of oxygen in the solution, the intensity and wavelength of the UV light, the desirable extent of treatment and the cost of hydrogen peroxide [8].…”