Determination and Validation of Henry’s Constant for Ozone in Phosphate Buffers Using Different Analytical Methodologies

Ferre-Aracil, J.; Cardona, Salvador; Navarro-Laboulais, J.

doi:10.1080/01919512.2014.927323

Cited by 39 publications

(41 citation statements)

References 59 publications

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“…5). The best agreement is obtained with the value of 2.2×10 6 L mol -1 s -1 found by Tomiyasu et al (1985), especially when k was determined using the correlation of Ferre-Aracil et al (2015) with a relative error of 14% (32% considering the Perry's data (1973) …”

Section: Comparison With the Data Of The Literature At 20°csupporting

confidence: 63%

“…The k values determined at 20°C for the two considered correlations (Ferre-Aracil et al (2015) and Perry (1973)) can be compared to three values reported in the literature (Sein et al, 2007;Staehelin and Hoigne, 1982;Tomiyasu et al, 1985). Since slightly different values of the H2O2/HO2 -pKa were used by these authors (from 11.65 to 11.8, 11.75 in this study), the values reported on the Table 4 have been corrected taking into account the pKa considered by these authors (red and green bars on Fig.…”

Section: Comparison With the Data Of The Literature At 20°cmentioning

confidence: 99%

“…2). (2016), both the correlations of Perry (1973) and Ferre-Aracil et al (2016) were considered in the calculations (Dang et al, 2016;Ferre-Aracil et al, 2015;Mandel, 2010;Perry et al, 1973). Thus, for the five experiments achieved at each temperature, two different values of the reaction rate constant k have been determined following the numerical resolution procedure presented on the section 3.3.…”

Section: Eq 18 Only Depends On the Selected Operating Conditions (Tmentioning

confidence: 99%

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Determination by reactive absorption of the rate constant of the ozone reaction with the hydroperoxide anion

Biard

Dang

Couvert

2017

Chemical Engineering Research and Design

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International audienceThe reaction rate constant between the hydroperoxide anion (HO2−) and molecular ozone was evaluated from the reactive absorption method in the range of temperature from 20 to 35 °C. This reaction is crucial in the initiation step of the ozone decomposition, especially using the peroxone process which combines ozone and hydrogen peroxide in solution. A stirred-cell operated semi-continuously was used for this purpose. A high initial concentration of tert-butanol (0.05 mol L−1) was applied to efficiently scavenge all radicals and to avoid any parasite reaction. Based on the dissolved H2O2 concentration decreasing and the outlet ozone concentration time-course, the stoichiometry of the initiation reaction was determined, with one mol of H2O2 consumed per mol of ozone transferred. The chemical conditions were thoroughly selected to reach a fast pseudo-first order absorption regime. The reaction rate constant increased from 1.91 × 106–2.40 × 106 L mol−1 s−1 at 20 °C to 5.68 × 106–7.31 × 106 L mol−1 s−1 at 35 °C

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Section: Comparison With the Data Of The Literature At 20°csupporting

confidence: 63%

Section: Comparison With the Data Of The Literature At 20°cmentioning

confidence: 99%

Section: Eq 18 Only Depends On the Selected Operating Conditions (Tmentioning

confidence: 99%

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Determination by reactive absorption of the rate constant of the ozone reaction with the hydroperoxide anion

Biard

Dang

Couvert

2017

Chemical Engineering Research and Design

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“…29,46 The equation derived from Perry (1973), and reported by Mandel (2010), is quite often used for engineering purpose: 16 Using their values of C 2 and C 3 (respectively 0.11 and 0.66), a value of C 1 equal to 0.542, 23% lower than the one found by Kucka et al, was determined by numerical resolution (the model is represented in Fig. 3).…”

Section: Kl Calculationmentioning

confidence: 99%

“…Temperature (°C) Correlation used to determine the Henry's law constant Perry 29 Ferre-Aracil et al 46 Mizuno-Tsuno 47 20 3.57 ± 0. 6.89 ± 0.59 6.30 ± 0.53 6.10 ± 0.52 35 12.2 ± 0.8 9.67 ± 0.60 9.50 ± 0.59…”

Section: Assumptions Verificationmentioning

confidence: 99%

Assessment of a Stirred-Cell Reactor Operated Semicontinuously for the Kinetic Study of Fast Direct Ozonation Reactions by Reactive Absorption

Dang

Biard

Couvert

2016

Ind. Eng. Chem. Res.

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A jacketed stirred-cell reactor, operated semi-continuously, was used to assess the kinetics of fast ozonation reactions by reactive absorption. The method was applied to the direct ozone reaction with resorcinol. A high resorcinol concentration was used to reach a steady state and to neglect the byproducts accumulation. Thus, the mass-transfer rate, and consecutively the reaction rate, were deduced from the ozone mass balance in the gas phase. The gas-phase and liquid-phase mass-transfer coefficients were previously measured directly through the ozone absorption in appropriated conditions. The results emphasized the high sensitivity of the reaction rate constant to the ozone physicochemical properties, especially its solubility, which is controversial in the literature. Therefore, several correlations used to calculate the ozone solubility in water were considered to calculate the second-order reaction rate constant, which varied from 3.57-4.68 10 5 L mol -1 s -1 at 20°C to 9.50-12.2 10 5 L mol -1 s -1 at 35°C. The activation energy was in the range 35-59 kJ mol -1 depending on the considered ozone solubility correlation. A sensitivity analysis is provided to assess the influence of the experimental conditions and ozone physicochemical properties on the model. Finally, the applicability of this method is thoroughly discussed.2

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Ozonation inactivation of Escherichia coli in aqueous solution over MgO nanocrystals: modelling and mechanism

Yang

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND This study aims to reveal the potential of using heterogeneous catalytic ozonation processes (HCOP) in water disinfection and provide a direction to tailor the catalytic activity by crystal facet engineering. Four kinds of MgO nanocrystals individually with exposure of (111), (200), (110) and (100) facets were prepared and used. RESULTS It is found that MgO functions as a bactericide as well as a catalyst for ozonation. The catalytic activity of MgO nanocrystals decreases in the order MgO(111) > MgO(200) > MgO(110) > MgO(100). The apparent first‐order inactivation rate (kap) fitted by the Hom model of MgO(111)/O3 is 2.56 min‐1, which is 32.0 and 3.5 times that of single ozonation and classic MgO(100)/O3. It is confirmed by scavenger studies that •OH mainly works in MgO(111)/O3 while more direct ozonation occurs in other cases. Some O2•− are also detected in the presence of MgO. With the attack of these reactive oxidation species, cell membranes were damaged and intracellular components were released, leading to the death of Escherichia coli. CONCLUSION These results indicate that HCOP is a promising technology for water disinfection, and crystal facet engineering is an effective strategy to enhance the catalytic performance. © 2017 Society of Chemical Industry

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Determination and Validation of Henry’s Constant for Ozone in Phosphate Buffers Using Different Analytical Methodologies

Cited by 39 publications

References 59 publications

Determination by reactive absorption of the rate constant of the ozone reaction with the hydroperoxide anion

Determination by reactive absorption of the rate constant of the ozone reaction with the hydroperoxide anion

Assessment of a Stirred-Cell Reactor Operated Semicontinuously for the Kinetic Study of Fast Direct Ozonation Reactions by Reactive Absorption

Ozonation inactivation of Escherichia coli in aqueous solution over MgO nanocrystals: modelling and mechanism

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