Results 21 to 30 of about 36,388 (310)

Effect of Ozonation on Recalcitrant Chemical Oxygen Demand (COD), Color, and Biodegradability of Hardwood Kraft Pulp (KP) Bleaching Effluent

BioResources, 2014
Ozonation was used for tertiary treatment of hardwood KP bleaching effluent. The objectives were to investigate the performance of ozonation on reduction of recalcitrant COD and color in the biologically treated effluent and to investigate the change in ...
Lirong Lei, Youming Li
doaj   +1 more source

Influence of ozone supply mode and aeration on photocatalytic ozonation of organic pollutants in wastewater using TiO2 and ZnO nanoparticles

Heliyon, 2023
Photocatalytic ozonation, which combines the effects of lighting and ozonation, has been shown to enhance the decolorization and degradation of organic pollutants in wastewater.
Reyhaneh Nabizadeh, Rezvaneh Amrollahi, Bijan Ghafary, Shahab Norouzian Alam   +3 more
doaj   +1 more source

Effect of ultrasonic, thermal and ozone pre-treatments on waste activated sludge solubilisation and anaerobic biodegradability [PDF]

, 2006
In order to enhance the efficiency of anaerobic digestion, the effects of ultrasounds, ozonation and thermal pre-treatment have been studied on waste activated sludge.
Alfonso, Barros, Bettini, Blyden, Bowyer, Cheung, Chodova, Chodova, Darmency, Darmency, Darmency, Diebold, Délye, Délye, Délye, Eberlein, Ernst, Foes, Foes, Fraga, Frey, Gadamski, Gasquez, Gawronski, Goloubinoff, Heap, Hirschberg, Hirschberg, Kelly, Kumata, Liu, Masabni, McNally, Mengistu, Naber, Páy, Reith, Rios, Rola, Salava, Sato, Schonfeld, Schwenger-Erger, Sibony, Smeda, Sommer, Stankiewicz, Thomzik, Trebst, Wang, Yerkes, Zhu   +51 more
core   +2 more sources

Dual roles of hydroxyl radicals and effects of competition on ozonation kinetics of two phenazone-type pollutants

Emerging Contaminants, 2015
Ozonation has been proved to be a promising approach for eliminating emerging pollutants in wastewater. In previous studies, emerging pollutants including diverse pharmaceuticals were found to exhibit significantly different ozonation reactivity. However,
Siyu Zhang, Yue Zhao, Gang Yu, Bin Wang, Jun Huang, Shubo Deng   +5 more
doaj   +1 more source

Ozone decomposition [PDF]

Interdisciplinary Toxicology, 2014
ABSTRACT Catalytic ozone decomposition is of great significance because ozone is a toxic substance commonly found or generated in human environments (aircraft cabins, offices with photocopiers, laser printers, sterilizers). Considerable work has been done on ozone decomposition reported in the literature.
Batakliev, Todor, Georgiev, Vladimir, Anachkov, Metody, Rakovsky, Slavcho, Zaikov, Gennadi E.   +4 more
openaire   +2 more sources

Prompt Formation of Organic Acids in Pulse Ozonation of Terpenes on Aqueous Surfaces [PDF]

, 2010
A major atmospheric process, the gas-phase ozonation of terpenes yields suites of products via a cascade of chemically activated intermediates that ranges from primary ozonides to dioxiranes.
Colussi, A. J., Enami, Shinichi, Hoffmann, Michael R.   +2 more
core   +2 more sources

Pretreatment of secondary effluents in view of optimal ozone-based AOP removal of trace organic contaminants : bench-scale comparison of efficiency and energy consumption [PDF]

, 2020
This study compares the performance of several ozone-based advanced oxidation processes (AOPs), in combination with filtration, in terms of trace organic contaminant (TrOC) removal efficiency and energy and cost requirement.
Demeestere, Kristof, Liu, Ze, Van Hulle, Stijn   +2 more
core   +1 more source

Optimizing water ozonation conditions with the aim of removing estrone and 17β-estradiol hormones [PDF]

Bihdāsht-i Mavādd-i Ghaz̠āyī, 2020
The presence of endocrine-disrupting chemicals in the environment and their adverse effects on human and animal health have attracted much attention in recent years. Estrogens are the most important endocrine disruptors and estrone (E1) and 17β-estradiol
kh. Abbaszadeh Maroufan, H. Mirzaei, A.A. Matin, A. Javadi, A. Amani-gadim   +4 more
doaj   +1 more source

Influence of activated carbons on the kinetics and mechanisms of aromatic molecules ozonation [PDF]

, 2010
Companies have been looking for new methods for treating toxic or refractory wastewaters; which can mainly be used prior to or after or in connexion with biological treatment processes.This paper compares conventional ozone oxidation with activatedcarbon
Debellefontaine, Hubert, Manero, Marie-Hélène, Mathé, Stéphane, Merle, Tony, Pic, Jean-Stéphane   +4 more
core   +2 more sources

PREVENTION OF DENTAL CARIES IN CARIES-ACTIVE INDIVIDUALS BY GASEOUS OZONE [PDF]

Journal of IMAB, 2023
Introduction: The action of ozone is associated with the prevention of dental plaque formation, and the reduction of bacterial development supports the prevention of dental caries.
Janet Kirilova, Dimitar Kirov
doaj   +1 more source