abstract: in this project, a nano catalyst (tio2) and ozone combined with each other and they were used for the removal of 4-nitrophenol (4np) in industerial wastewater. the effect of some operational parameters such as initial ph (3-9), the concentration of pollutant (20-80 mg/l), and amount of tio2 were investigated. in o3/tio2 process, the anion radical  formed before the production of hydro...

Ozone and hydroxyl radical (*OH) reaction kinetics were measured for 14 antibacterial compounds from nine structural families, to determine whether municipal wastewater ozonation is likely to result in selective oxidation of these compounds' biochemically essential moieties. Each substrate is oxidized by ozone with an apparent second-order rate constant, k''(O3,app) > 1 x 10(3) M(-1) s(-1), at ...

UNLABELLED BACKGROUND The fate of 14 antidepressants along with their respective N-desmethyl metabolites and the anticonvulsive drug carbamazepine was examined in a primary sewage treatment plant (STP) and following advanced treatments with ozone (O3). The concentrations of each pharmaceutical compound were determined in raw sewage, effluent and sewage sludge samples by LC-MS/MS analysis. Th...

Wastewater from a pharmaceutical formulation facility (TevaKS, Israel) was treated with a biological activated-sludge system followed by ozonation. The goal was to reduce the concentrations of the drugs carbamazepine (CBZ) and venlafaxine (VLX) before discharging the wastewater to the municipal wastewater treatment plant (WWTP). Both drugs were detected at extremely high concentrations in TevaK...

This study aims to investigate the treatment of real textile wastewater using a novel bentonite clay/TiO2/ZnO-based ozonation catalyst. In this study, synergic electroflocculation/catalytic ozonation, catalytic and processes are applied in modified hybrid reactor. To authors’ knowledge, is first application clay/TiO2/ZnO as an catalyst for treating wastewater. The four operational variables—ozo...

The objective of this study was to compare the efficiency of O3/granular activated carbon (GAC) to enhance ozone transformation into OH radicals, with the common advanced oxidation processes (O3/OH , O3/H2O2). The results obtained with model systems under the given experimental conditions showed that the system O3/OH (pH 9) and O3/H2O2 (pH 7, [H2O2] = 1 10 -5 M) are more efficient than O3/GAC (...

Recent evidence suggests that inhaled ozone (O3) does not induce toxicity via direct epithelial interactions. Reactions with epithelial lining fluid (ELF) constituents limit cellular contact and generate products, including lipid ozonation products, postulated to initiate pathophysiological cascades. To delineate specific aspects of lipid ozonation product formation and to estimate in situ surf...

One of the dominant species green algae growing along Mediterranean coast Egypt is Ulva lactuca. Pretreatment can have a major effect on biogas production because hydrolysis cell wall structure rate-limiting stage in anaerobic digestion (AD) process. The use ozone, new pretreatment, to boost from lactuca was investigated this study. Ozonation at various dosages used contrast untreated biomass, ...

Anaerobic digestion is a popular method for improving fertilizing properties, but there no report on the effect of shock load with butter anaerobic chicken manure. Therefore, this study aimed to investigate manure addition. The volatile suspended solid (VSS) was set at 20g VSS/L different additions from 0 60 g and oxygen flow rate (OFR) 2.5 mL/h. results showed that ammonia ranged 0.072 g/L 0.0...

ABSTRACT: In this project, a nano catalyst (TiO2) and ozone combined with each other and they were used for the removal of 4-nitrophenol (4NP) in industerial wastewater. The effect of some operational parameters such as initial pH (3-9), the concentration of pollutant (20-80 mg/L), and amount of TiO2 were investigated. In O3/TiO2 process, the anion radical  formed before the production of hydro...