The reaction of ozone with solid polystyrene

Разумовский, С. Д.; Karpukhin, O. N.; Kefeli, A.A.; Pokholok, T. V.; Zaikov, G.Ye.

doi:10.1016/0032-3950(71)90286-3

Cited by 15 publications

(14 citation statements)

References 4 publications

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“…Corresponding to the bibliographic data (Adams et al, 1997; Benoit, 1994; Chen and Chen-Hung, 1999; Gould and Weber, 1976; Griffini, 1999;Gurol and Nekouinaini, 1984;Gurol and Singer, 1983;Hautaniemi, 1998;Li K. et al, 1979;Razumovskii, 1971;Yordanov,1999), the effect of the pH variation under phenol decomposition with ozone is very significant. To study the pH effect on the ozonation kinetics of p-PSA and 2-NSA, the variations of the pH from 2 to 12 have been determined.…”

Section: Effect Of Ph On Organic Decompositionmentioning

confidence: 94%

“…For this reason, in the case of the high phenol, p-PSA and 2-NSA concentration in residual water, ozonation may be suggested as a good pre-treatment for biodegradation (Beltra´n et al, 1995(Beltra´n et al, , 1997Beltra´n et al, 2000;Gurol and Singer, 1983;Gurol and Nekouinaini, 1984;Gould and Weber, 1976;Hautaniemi et al, 1998;Li et al, 1979;Razumovskii, 1971; Razumovskii and Zaikov, 1984). The preliminary ozonation destroys the initial pollutants with the formation of no toxicity and simple substances that seem to be much more biodegradable, making the biological treatment itself more efficient (Adams et al, 1997;Benoit, 1994;Yordanov et al, 1999).…”

Section: Introductionmentioning

confidence: 95%

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Ozonation of Non-Biodegradable Mixtures of Phenol and Naphthalene Derivatives in Tanning Wastewaters

Poznyak

2005

Ozone: Science & Engineering

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The decomposition of non-biodegradable mixtures of phenol and naphthalene derivatives in aqueous solution by ozonation is investigated. The toxic water pollutants are the intermediate synthesis products obtained via the sulfonation reaction of naphthalene and phenol. These organic compounds are phenol (PH), p-phenol sulfonic acid (p-PSA), and 2-naphthalene sulfonic acid (2-NSA). The kinetic study of ozonation is realized by the pH variation in the range of 2-12. The pH-dependence of the ozone reactivity for different organics is observed. The intermediates and final products determination is measured by UV absorbency and HPLC technique. It is shown that the main subproducts are muconic, fumaric, maleic and malonic acids and catechol. The final products are basically oxalic acid and formic acids as well as formaldehyde. In the initial stage of ozonation, hydroxylation and desulfuration of p-PSA and 2-NSA is detected. The effect of the preliminary ozonation on the biodegradability of the contaminants is estimated by BOD 5 /COD-ratio variation, which significantly increases from 0.15 to 0.88.

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Section: Effect Of Ph On Organic Decompositionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 95%

Ozonation of Non-Biodegradable Mixtures of Phenol and Naphthalene Derivatives in Tanning Wastewaters

Poznyak

2005

Ozone: Science & Engineering

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“…The presence and increase of the carbonyl functional groups are a consequence of the reaction of ozone on the surface of the charged particles. 37 In the presence of water vapor, the reversable chemical reaction between the carbonyl functional groups as reported elsewhere produces hydrate compounds 41 shown in Figure 8 and results in the decay of this band.…”

Section: Atr-ftir Measurements To Track the Concentration Of The C mentioning

confidence: 69%

Influence of relative humidity on charge stability of ozone treated polystyrene particles

Jaber

Obaid

Advani

et al. 2020

J of Applied Polymer Sci

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The influence of relative humidity on charge decay on polystyrene (PS) particles is investigated at room temperature by using Faraday cup and attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR) spectroscopy. The PS (2.8 ± 0.4 μm in diameter) particles were charged by using an ozone setup. The ozone charging source was from the free O-radicals generated from O 3 dissociation on the surface of the PS particles resulting in carbonyl groups formation. The charge decayed exponentially, and the decay time constants were quantified using Faraday cup for various relative humidity conditions at room temperature. The charge decay due to the interaction of the PS particles with the environment was also investigated using ATR-FTIR, where the C O stretching band at 1745 cm −1 was monitored. The decay of the C O on the PS particles is due to the reaction of the carbonyl groups with the hydronium ions [H 3 O] +. The reaction of C O with [H 3 O] + is responsible for the time dependent charge decay. From both methods, the charge decay exhibited an exponential behavior, where the time decay constants measured from the two methods were in excellent correlation. The decay time constant increased linearly with increasing the RH. A generalized master charge decay curve is established for any PS surfaces (particles/films).

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“…Previous studies with PS powder and PS dissolved in organic solvents, as well as with other polymers (e.g., polypropylene, polyethylene, polyethylene terephthalate, and polyurethane) demonstrated the generation of several oxygen-containing groups, such as hydroperoxides, ketones, and acids, as a consequence of their exposure to ozone [29][30][31]. Razumovskii et al also demonstrated the stepwise degradation of PS that was treated by ozone [32]. The present article studies the effect of ozonolysis conditions (e.g., exposure time and flow rate of the ozone) on the ratio between the conjugated hydroperoxide concentration and that of the other oxidized products formed by the ozonolysis.…”

Section: Introductionmentioning

confidence: 91%

“…O 2 /O 3 stream was bubbled through the dispersed particles at room temperature, for different period of times (0.5, 1.0, and 3.0 h) and different flow rates (0.25 and 1.0 L min −1 ). The oxidized particles were then washed free of excess ozone by intensive centrifugation cycles with water, until the supernatant did not show any indication of free ozone, as measured spectrophotometrically with KI [32].…”

Section: Synthesis Of Oxidized Crosslinked Micrometer-sized P(s-dvb) mentioning

confidence: 99%

Surface modification of crosslinked poly(styrene-divinyl benzene) micrometer-sized particles of narrow size distribution by ozonolysis

Partouche

Waysbort

Margel

2006

Journal of Colloid and Interface Science

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The reaction of ozone with solid polystyrene

Cited by 15 publications

References 4 publications

Ozonation of Non-Biodegradable Mixtures of Phenol and Naphthalene Derivatives in Tanning Wastewaters

Ozonation of Non-Biodegradable Mixtures of Phenol and Naphthalene Derivatives in Tanning Wastewaters

Influence of relative humidity on charge stability of ozone treated polystyrene particles

Surface modification of crosslinked poly(styrene-divinyl benzene) micrometer-sized particles of narrow size distribution by ozonolysis

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