Degradation efficiency and mechanism of azo dye RR2 by a novel ozone aerated internal micro-electrolysis filter

Degradation of Thiamethoxam in aqueous solution by ozonation: Influencing factors, intermediates, degradation mechanism and toxicity assessment

“…The ozone reacted with organic compounds by electrophilic and/or nucleophilic addition directly or by radical chain reactions indirectly, which correlated closely with the operating pH (Zhang et al, 2014). To analyze this factor, THIA solution under different pH values was oxidized.…”

“…However, when pH was increased further, the decomposition of excess ozone accelerated and a chain reaction between OH or OH and HO 2 À occurred, leading to a decrease in the effective concentration of the OH necessary for the degradation of THIA in aqueous solution (Sevimli and Sarikaya, 2002). Now, when pH was substantially higher, the removal percentage of UV 251 and the use ratio of ozone both decreased (Zhang et al, 2014). Hence, a condition of pH 9 was extremely important for achieving an efficient degradation in THIA ozonation.…”

Rapid degradation of Congo red by molecularly imprinted polypyrrole-coated magnetic TiO2 nanoparticles in dark at ambient conditions

“…The effect of temperature on degradation of CR was also studied. Different temperatures (15,20,25 and 30 • C) were tested as depicted in Fig. 8b.…”

“…Dark catalytic oxidation methods such as ozonation, Fenton process and sonolysis could avoid the need of light irradiation [19][20][21][22][23]. However, these treatment processes required additional chemicals, high electrical power, and pH adjusting.…”

Enhanced dewaterability of textile dyeing sludge using micro-electrolysis pretreatment

“…In recent years, the micro-electrolysis technology has shown an enormous potential for disposing organic wastes. Organic pollutants, such as phenol (Guan et al, 2012), p-nitrophenol (Tang et al, 2012), propionitrile (Lai et al, 2013), nitrobenzene (Li et al, 2011) and organic dyestuff (Huang et al, 2013;Zhang et al, 2014), can be oxidized by oxidants and radicals produced during the micro-electrolysis process. The advantages of the micro-electrolysis technology include:…”