Results 231 to 240 of about 10,689 (251)

Catalytic ozonation of sulfamethoxazole over Fe3O4/Co3O4 composites

Chemosphere, 2019
In this study, Fe3O4/Co3O4 composites were prepared and applied in the catalytic ozonation of sulfamethoxazole (SMX). Various parameters including initial solution pH, Fe3O4/Co3O4 composites dose, O3 dose and SMX concentration were investigated.
Hai Chen, Jianlong Wang
openaire   +2 more sources

Degradation of Malathion and Parathion by Ozonation, Photolytic Ozonation, and Heterogeneous Catalytic Ozonation Processes

CLEAN – Soil, Air, Water, 2011
AbstractThe oxidation of organophosphorus pesticides (OPPs), such as malathion and parathion, in aqueous solution was studied using conventional ozonation (O3), photolytic ozonation (O3/UV, O3/UV/H2O2), and heterogeneous catalytic ozonation (O3/TiO2/UV) processes.
Beduk, Fatma, Aydin, Mehmet Emin, Ozcan, Senar   +2 more
openaire   +1 more source

Non-catalytic and catalytic ozonation of simple halohydrins in water

Journal of Environmental Chemical Engineering, 2019
Abstract This study compares degradation of two hazardous halohydrins, namely 2,3-dibromopropan-1-ol (2,3-DBP) and 1,3-dichloro-2-propanol (1,3-DCP) by non-catalytic ozonation in acidic, neutral and basic water and catalytic ozonation with Co loaded on Fe prepared by (i) co-precipitation (Co-ppt) and (ii) a simple physical mixing (Mixed) method.
Asogan N. Gounden, Sooboo Singh, Sreekantha B. Jonnalagadda   +2 more
openaire   +1 more source

Chemical and Catalytic Properties of Ozone

Catalysis Reviews, 2000
Ozone is a unique species whose chemistry has a profound impact in many areas of our society. It is well known as a beneficial constituent of the upper atmosphere which shields living organisms fro...
openaire   +1 more source

The investigation of catalytic ozonation and integrated catalytic ozonation/biological processes for the removal of phenol from saline wastewaters

Journal of Hazardous Materials, 2009
The effectiveness of the catalytic ozonation process (COP) with a GAC catalyst was assessed based on the degradation and COD removal of phenol from the saline wastewater, as compared with the single ozonation process (SOP). The COP attained a much higher level of phenol degradation compared to the SOP.
Gholamreza, Moussavi, Ali, Khavanin, Rahimeh, Alizadeh   +2 more
openaire   +2 more sources

Catalytic Ozonation over Activated Carbon-based Materials

2022
This chapter summarizes the recent advances of activated carbon, biochar and their supported metal oxides. The focuses are on how to distinguish whether the role of AC in the pollutant degradation by AC catalytic ozonation is adsorption or catalysis, the latest results of activated carbon- and biochar-supported metal oxides and the problem that needs ...
Zheng-Qian Liu, Jia-Ying Li, Shu-Ting Li
openaire   +1 more source

Decolorization of AZO dyes using catalytic ozonation

Reaction Kinetics and Catalysis Letters, 2007
Decolorization of C.I. Reactive Red 2 (RR2) and C.I. Acid Orange 6 (AO6) using a catalytic ozonation system was evaluated. The decolorization rates for RR2 and AO6 were accelerated by at least 30% by adding MnO2 to the O3 system; additionally, the decolorization rate increased as the MnO2 dosage and ozone power consumption increased.
Chung-Hsin Wu, Chao-Yin Kuo, Chung-Liang Chang   +2 more
openaire   +1 more source

Catalytic Filtration of Ozone in Airborne Application

Journal of Engineering for Industry, 1962
Studies were undertaken to determine a practical method of reducing the ozone content of cabin intake air typical of high-altitude, high-speed aircraft. To make use of the aircraft ram air temperature rise, catalytic filters were investigated for purposes of ozone destruction.
Myron Levine, John E. Boberg
openaire   +1 more source

Heterogeneous Catalytic Ozonation of Aqueous Reactive Dye

Ozone: Science & Engineering, 2005
The aqueous solution of a model reactive dye, C.I. Reactive Blue 5, was ozonated in the presence of a heterogeneous catalyst, CuS. It was found that CuS was very effective for catalyzing the decolorization so that both treatment time and ozone consumption were significantly reduced.
Kintoo Yong, Jiangning Wu, Susan Andrews
openaire   +1 more source

Ozone and heavy metals from automobile catalytic converters

Environmental Science and Pollution Research, 1997
The introduction of the 3-way catalytic converter is presently being acclaimed by different sources in Germany as the solution to the ozone problem. This hypothesis is viewed with scepticism: studies conducted in the USA, where the 3-way catalytic converter was introduced as early as 1975, show that the ozone problem has not been resolved by any means ...
openaire   +2 more sources