(2012), the decolorization process via ozonization
is rapid in both alkaline and acid conditions due to the electrophilic nature of the direct (attack by [O.sub.3] molecules) and indirect (attack via HO* radicals) ozonation process, which considerably facilitates the reaction with the azogroups (chromophore centers).
of vegetable oils seems to enhance its stability for clinical uses, keeping activity for a period of up to 2-3 years [22, 23].
(Ed.), The main products appear to be aldehydes and ketones in the case of polyethylene, while an ozonide or peroxidic complex, stable at intermediate temperatures, forms during polystyrene ozonization
American Society for Testing and Materials, Phildelphia, 81-104.
al., (2004) studied that aeration and ozonization
have significant impact in increasing oxygen concentration and reducing the pathogenic microbial population.
Figure 9 shows SBR/BR test pieces without antiozonants and with a combination of the cyclic acetal and wax after 168 hours ozonization
(50 pphm, 55% relative humidity, 40 [degrees] C).
of waste water involves the transference of ozone mass from the gas phase to the liquid phase, ozone's reaction with organic and inorganic pollutants in the liquid medium and the reactions of ozone self-decomposition (CHENG et al., 2003).
AOPs include the classical Fenton reaction as well as its modifications (e.g., light assisted Fenton oxidation or ferrioxalate-photo Fenton oxidation) as well as [H.sub.2][O.sub.2]/UV or ozonization
Studies on the ozonization
of effluents of yeast industry continue and the results of this study will be presented in the near future.
It was observed that the modulus profile of the reacting foam was insensitive at levels of ozonization
studied with water and isocyanate contents kept constant.
Certain conventional treatment methods of effluents containing toxic heavy metals (precipitation, ion exchange, electro-chemical treatment, flocculation, ozonization
and filtering) are generally limited in their effects since they are technically and economically non-viable.