Degradation kinetics of DEP in water by ozone/activated carbon process: Influence of pH

Oliveira, Tatianne Ferreira de; Chedeville, Olivier; Cagnon, Benoı̂t; Fauduet, Henri

doi:10.1016/j.desal.2010.11.013

Cited by 36 publications

(19 citation statements)

References 19 publications

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“…In this study, the adsorption kinetic followed an observed firstorder model for the catalyst dose being over loading vs. the initial concentration of BZF [37], which was confirmed by the data from Fig. S2.…”

Section: Contributions Of Direct/indirect Oxidation and Surface Adsorsupporting

confidence: 78%

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Zhang

et al. 2016

Chemical Engineering Journal

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Section: Contributions Of Direct/indirect Oxidation and Surface Adsorsupporting

confidence: 78%

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Zhang

et al. 2016

Chemical Engineering Journal

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“…In addition, δ het increased from 2.75% to 37.7% as pH decreased from 10.2 to 2.0. Similar tendency was observed in catalytic ozonation of DEP with AC catalyst (de Oliveira et al 2011). When the solution pH decreased, single ozonation became very slow, whereas the presence of CeO 2 /AC accelerated the reaction rate due to HA ozonation by • OH radicals.…”

Section: Effect Of Solution Ph On Ha Decay Ratesupporting

confidence: 74%

“…This finding implied that HA degradation was mainly located in the solution bulk rather than on the catalyst surface under all pH conditions. These results were not consistent with the report of catalytic ozonation of model pollutant diethyl phthalate (DEP) by using AC as catalyst (de Oliveira et al 2011).…”

Section: Effect Of Solution Ph On Ha Decay Ratecontrasting

confidence: 72%

“…Moreover, the HA degradation rate in single and catalytic ozonation increased as pH increased from 2.0 to 10.2, implying that the catalytic mechanism was closely related to aqueous • OH radicals (Chiang et al 2006;de Oliveira et al 2011). Regardless of the pH used, the kinetic contribution of heterogeneous reactions to HA removal (δ het ) was less than 50%, indicating that HA degradation was mainly located in the solution bulk rather than on CeO 2 /AC surface (de Oliveira et al 2011).…”

Section: Mechanism Of Catalytic Ozonation Of Hamentioning

confidence: 90%

“…The kinetic contribution of heterogeneous reactions to HA degradation can be expressed as follows (de Oliveira et al 2011):…”

Section: Effect Of Solution Ph On Ha Decay Ratementioning

confidence: 99%

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Kinetics and Mechanism of Humic Acids Degradation by Ozone in the Presence of CeO₂/AC

Qin

Qi-wu

Chen

et al. 2015

Ozone: Science & Engineering

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This work investigated the catalytic ozonation of humic acids extracted from landfill leachate in the presence of CeO 2 /AC with focus on the kinetics of humic acids degradation. It was confirmed that the degradation of humic acids mainly took place in the solution bulk. The direct and indirect reaction constants of ozone against humic acids were determined. By analyzing the contributions of direct ozone oxidation and indirect • OH radicals oxidation to humic acids removal, it was found that • OH radicals oxidation predominated at all pH, indicating that the catalytic ozonation of humic acids with CeO 2 /AC involved • OH radicals mechanism.

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Advanced treatment of phenol by H₂O₂/UV/activated carbon coupling: Influence of homogeneous and heterogeneous phase

et al. 2018

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In this work, a heterogeneous catalytic wet peroxide process combining activated carbon (AC) and hydrogen peroxide (H 2 O 2 )/ultraviolet radiation was applied for the aqueous-phase removal of phenol. The influence of the pH and peroxide concentration were determined according to a factorial plan. The kinetic contribution of radical mechanisms (d HO8 ) was estimated using a radical scavenger (tert-butyl alcohol). The degradation kinetics was modelled by a global pseudo-first-order kinetic model based on the sum of the effects during the treatment process. The results showed that these two variables significantly affected the percentage removal. The peroxide concentration exerted a positive effect (i.e., as the H 2 O 2 concentration increased, the percentage removal also increased). Additionally, as the pH value increased, the degradation accelerated, and the kinetic constant (k homogeneous ) increased from 0.00938 min À1 to 0.02772 min À1 . The results obtained in the presence of AC demonstrated the ability of AC to ameliorate the degradation of phenol; for example, d heterogeneous was 45.69 % to 41.35 %.

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Degradation kinetics of DEP in water by ozone/activated carbon process: Influence of pH

Cited by 36 publications

References 19 publications

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Kinetics and Mechanism of Humic Acids Degradation by Ozone in the Presence of CeO₂/AC

Advanced treatment of phenol by H₂O₂/UV/activated carbon coupling: Influence of homogeneous and heterogeneous phase

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Degradation kinetics of DEP in water by ozone/activated carbon process: Influence of pH

Cited by 36 publications

References 19 publications

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Cobalt modified red mud catalytic ozonation for the degradation of bezafibrate in water: Catalyst surface properties characterization and reaction mechanism

Kinetics and Mechanism of Humic Acids Degradation by Ozone in the Presence of CeO2/AC

Advanced treatment of phenol by H2O2/UV/activated carbon coupling: Influence of homogeneous and heterogeneous phase

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Kinetics and Mechanism of Humic Acids Degradation by Ozone in the Presence of CeO₂/AC

Advanced treatment of phenol by H₂O₂/UV/activated carbon coupling: Influence of homogeneous and heterogeneous phase