BACKGROUND Toluene is a volatile organic compound, one of 189 hazardous air pollutants (HAPs) and the most important pollutant found in most industries and indoor environments; owing to its adverse health, toluene must be treated before being released into the environment. METHODS In this research study, a continuous-flow system (including an air compressor, silica gel filters and activated c...

Heterogeneous catalytic ozonation (HCO) is a promising advanced oxidation process (AOP) that can effectively degrade recalcitrant organic pollutants; but formation of harmful byproducts should be carefully evaluated.

The aim of this study is to elucidate the mechanism micropollutants’ removal in drinking water by application catalytic ozonation, using transition metals as appropriate catalysts. For that purpose, degradation 500 ?g/L p-chlorobenzoic acid (p-CBA) and benzotriazole with addition 2 mg/L ozone presence 1 Co(II) or Fe(II) at pH 7.8 were examined. It was found distilled experiments, both metal ion...

The objective of this work was to analyze the activity of petroleum coke and of activated carbons prepared from this material in the ozonation of aromatic contaminants of low biodegradability. 1,3,6-Naphthalenetrisulphonic acid (NTS) was selected as model compound for the study. The presence of the original coke during 1,3,6-naphthalenetrisulphonic acid ozonation produced a slight increase in t...

Abstract Water pollution is still a serious problem in Indonesia. One of the pollutants that contribute to water dye. type dye often used textile industry methylene blue. There are several methods for treating waste, one which ozonation method. Ozonation chemical oxidation process remove color organic dyes. The catalytic can increase ability ozone sewage treatment. catalyst H 2 O decompose into...

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...

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...