Catalysis of advanced oxidation reactions by ultrasound: A case study with phenol

Evaluation of advanced oxidation processes (AOP) using O3, UV, and TiO2 for the degradation of phenol in water

“…The rate constant of O 3 -UV-TiO 2 process in this study was similar to that of US-H 2 O 2 -CuO process [39]. On the other hand, compared with US-UV-O 3 process [40], sonoFenton [41], and UV-H 2 O 2 [42], the rate constant for O 3 -UV-TiO 2 process in this study was low. However, the E EO value for O 3 -UV-TiO 2 process in this study was lower than that of reported other processes.…”

Technologies for the removal of phenol from fluid streams: A short review of recent developments

“…Hydroquinone, benzoquinone and catechol are main intermediates, but at higher conversion oxalic acid is the main product. The conversion of phenol is only slightly increased if pH 10 is produced due to the addition of soda [78]. A further increase in phenol conversion may be obtained by the use of ultrasound, but this effect is more relevant at neutral than at basic pH [79].The use of Differential Neural Network Observers to the products formation during phenol ozonation has been the object of a recent paper [79].…”

Methylene Blue Adsorption Study Using Different Zno Types (Normal, Shaheed Factory, Nano)

“…: dyes) are available by current treatment technologies & can be used (physicochemical, biological) treatment techniques. The physicochemical processes involves (Biological methods [4], enzyme treatment [5], solvent extraction [6], adsorption [7], Advanced oxidation processes [8], electrochemical oxidation [9], catalytic oxidation [10], ion selective electrode [11]etc. Adsorption is the tendency for accumulation of a substance to take place at a surface or at an interface the accummence of adsorption is due to the atoms in any surface being subject to unbalanced forces of attraction perpendicular to the surface plane and therefore possessing certain unsaturation [12].…”