Efficient decolorization of dye pollutants with LiFe(WO4)2 as a reusable heterogeneous Fenton-like catalyst

Degradation of organic dye using a new homogeneous Fenton-like system based on hydrogen peroxide and a recyclable Dawson-type heteropolyanion

“…These results concur with those found in literature [27][28][29]. This phenomenon can be explained by the effect of H 2 O 2 concentration is in excess compared to latter and can cause the scavenging effect (the reaction of H 2 O 2 and OH Á in aqueous solution).…”

“…This phenomenon can be explained by the fact that increasing the initial concentration of dye leads to an increase in the number of molecules of (AO7), while the number of the radical's hydroxyls remains constant (H 2 O 2 concentration and catalyst kept constant), thereby causing a decrease in the discoloration efficiency [19,27].…”

Study of the degradation of a toxic dye by the catalytic system (H1.5Fe1.5P2W12Mo6O61, 22H2O)/H2O2

“…6, it is clear that the discolorization efficiency decreases with increasing initial concentration of the dye. This result is in good agreement with results reported in the literature, and can be explained by the fact that increasing the initial dye concentration increases the ratio of AY99 molecules to hydroxyl radicals (as the concentrations of H 2 O 2 and the catalyst are fixed), thereby decreasing the discolorization efficiency (Ramirez et al 2007;Li et al 2006;Ji et al 2011). Fig.…”

Degradation of methylene blue using double-chamber dielectric barrier discharge reactor under different carrier gases

“…It can react with nearly all kinds of organic pollutants, non-selectively. AOPs, such as Fenton (Ji, 2011;Ikoma, 2012), TiO 2 photocatalysis Kerkez, 2015), ozonation (Huang, 2015) and their combinations (Ramalho, 2009), have been widely investigated. However, the application of these methods has been limited because of secondary pollution and inefficiency.…”