The kinetics of ozone-phenol reaction in aqueous solutions

Joshi, Makarand G.; Shambaugh, Robert L.

doi:10.1016/0043-1354(82)90025-2

Cited by 41 publications

(13 citation statements)

References 8 publications

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“…Ozone is a strong oxidant (£°= +2.07 V) that has been used in drinking and wastewater treatment for the oxidation of organic chemicals, including trichloroethyl-ene, phenol, and atrazine (Bader and Hoigné, 1983;Joshi and Shambaugh, 1982;Hapeman-Somich, 1992). As ozone is highly reactive with the PAHs (Butkovic et al, 1983;Andreozzi et al, 1992), in situ ozonation in the vadose zone could potentially be used to remediate sites that might otherwise be cleaned up only by very expensive means involving excavation and processes such as thermal destruction.…”

Section: Introductionmentioning

confidence: 99%

The Kinetics of the Reaction of Ozone with Phenanthrene in Unsaturated Soils

Hsu¹,

Masten²

1997

Environmental Engineering Science

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The kinetics of the heterogeneous reactions of gaseous ozone with soil water, the soil matrix, and phenanthrene were investigated in a cycling batch reactor. The rate of ozone decomposition in soil water is described as a first-order rate expression with respect to the gaseous ozone concentration. The rate expression for the reaction of gaseous ozone with the soil matrix in moist soil can be described as second order overall, first order with respect to both gaseous ozone and soil organic matter concentrations. The rate of reaction for ozone with the soil matrix was observed to be independent of the ozone gas pore velocity (over the range of 0.18 to 23.4 cm/s), indicating that the overall reaction rate is dominated by chemical reactions rather than by interfacial mass transfer.During ozonation of a phenanthrene-contaminated soil, two pseudo-first-order kinetic regions with respect to the concentration of phenanthrene were observed. This is thought to be due to the nonuniformity of the surface distribution of solid phenanthrene, which may be present as material that is either floating on the soil water or is trapped in the soil pores.

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Section: Introductionmentioning

confidence: 99%

The Kinetics of the Reaction of Ozone with Phenanthrene in Unsaturated Soils

Hsu¹,

Masten²

1997

Environmental Engineering Science

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“…It is apparent that the value of k' O3 linearly increases with increasing dissolved ozone concentration. Similar kinetics was reported in the literatures (Joshi, 1982;Li, 1979). From the linear relation shown in Figure 3, the apparent first-order reaction rate, k' O3 , for the ozonedegradation of phenol in the aqueous phase can be correlated by an empirical equation as follows.…”

Section: Methodsmentioning

confidence: 62%

Effects of Addition of Hydrogen Peroxide and/or Calcium Carbonate on Ozone-Decomposition of Phenol Sparingly Dissolved in Water

Muroyama

Suwa

Kawabata

et al. 2011

Ozone: Science & Engineering

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In the present work, we investigated the degradation behavior of phenol sparingly dissolved in water with ozone treatment with/without subsidiary additions of CaCO 3 and/or H 2 O 2 . The enhancement effects of these additives for ozone-oxidation processing were investigated based on the variation of pH value and amounts of organic acids produced in the aqueous phase. Addition of a small amount of CaCO 3 in the aqueous phase, which could maintain the pH in a range of high values, resulted in a significant enhancement on the ozone-degradation rate of phenol instead of giving rise to negative scavenger effects. Addition of H 2 O 2 under the presence of 0.1 g/L of CaCO 3 in the aqueous phase most enhanced the ozone-degradation of phenol in a range of dissolved ozone concentrations examined and caused small net production of organic acid components. The apparent first-order rate constant for phenol degradation was well correlated in terms of the dissolved ozone concentration under the influences of the addition of oxidation promoters for practical purposes.

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“…Widely studied methods for the removal of phenol include biological treatment [77], extraction [78], and wet oxidation [79]. However, advanced oxidation processes (AOPs) such as Fenton, photo-Fenton [80], ozone oxidation [81], and photo-catalytic oxidation [82] are successfully used for the removal of phenol [75]. There is an increasing interest in the use of wet hydrogen peroxide catalytic oxidation (WHPCO) for the disposal of phenolic compounds in water, because this method (in comparison, for example, with wet air oxidation) avoids the use of costly reactors, it can be selective towards the conversion of specific substrates, and it is easy to manage [69,83].…”

Section: Heterogeneous Fenton-like Catalysts For Phenol Oxidationmentioning

confidence: 99%

Development of Pillared Clays for Wet Hydrogen Peroxide Oxidation of Phenol and Its Application in the Posttreatment of Coffee Wastewater

Sanabria

Molina

Moreno

2012

International Journal of Photoenergy

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This paper focuses on the use of pillared clays as catalysts for the Fenton-like advanced oxidation, specifically wet hydrogen peroxide catalytic oxidation (WHPCO). This paper discusses the limitations on the application of a homogeneous Fenton system, development of solid catalysts for the oxidation of phenol, advances in the synthesis of pillared clays, and their potential application as catalysts for phenol oxidation. Finally, it analyzes the use of pillared clays as heterogeneous Fenton-like catalysts for a real wastewater treatment, emphasizing the oxidation of phenolic compounds present in coffee wastewater. Typically, the wet hydrogen peroxide catalytic oxidation in a real effluent system is used as pretreatment, prior to biological treatment. In the specific case of coffee wet processing wastewater, catalytic oxidation with pillared bentonite with Al-Fe is performed to supplement the biological treatment, that is, as a posttreatment system. According to the results of catalytic activity of pillared bentonite with Al-Fe for oxidation of coffee processing wastewater (56% phenolic compounds conversion, 40% selectivity towards CO2, and high stability of active phase), catalytic wet hydrogen peroxide oxidation emerges as a viable alternative for management of this type of effluent.

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The kinetics of ozone-phenol reaction in aqueous solutions

Cited by 41 publications

References 8 publications

The Kinetics of the Reaction of Ozone with Phenanthrene in Unsaturated Soils

The Kinetics of the Reaction of Ozone with Phenanthrene in Unsaturated Soils

Effects of Addition of Hydrogen Peroxide and/or Calcium Carbonate on Ozone-Decomposition of Phenol Sparingly Dissolved in Water

Development of Pillared Clays for Wet Hydrogen Peroxide Oxidation of Phenol and Its Application in the Posttreatment of Coffee Wastewater

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