Aqueous phase heterogeneous catalytic oxidation of trichloroethylene

Atwater, James E.; Akse, James R.; McKinnis, Jeffrey A.; Thompson, John O.

doi:10.1016/s0926-3373(96)00063-x

Cited by 30 publications

(12 citation statements)

References 2 publications

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“…As far as the carbon support is concerned, changes in textural and chemical surface properties as well as carbon support oxidation during the continuous exposure to oxygen at CWAO conditions were experimentally evidenced [118,119,128,135]. These phenomena will be discussed more in detail in the following sections.…”

Section: Preparation and Characterisationmentioning

confidence: 90%

“…Using bimetallic Ru-Pt/C catalyst, Atwater et al [135,136] studied the CWAO of a broad variety of low molecular weight polar compounds found in very low concentrations within humidity condensates, urine distillates and crew personal hygiene wastewaters. The selected model contaminants included alcohols, diols, carboxylic acids, urea and thiourea (see table 5).…”

Section: Carboxylic Acidsmentioning

confidence: 99%

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Carbon materials and catalytic wet air oxidation of organic pollutants in wastewater

et al. 2005

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Section: Preparation and Characterisationmentioning

confidence: 90%

Section: Carboxylic Acidsmentioning

confidence: 99%

Carbon materials and catalytic wet air oxidation of organic pollutants in wastewater

et al. 2005

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“…Several authors have recently reported on the use of heterogeneous catalysts with hydrogen peroxide (4-7) and dissolved oxygen (8) as oxidants. Sandy aquifer material has been employed to study the decomposition kinetics of hydrogen peroxide and the degradation of quinoline (4).…”

Section: Introductionmentioning

confidence: 99%

“…This COE process uses a special catalyst to promote the oxidation reaction with hydrogen peroxide at 60°C. In addition, a platinum-ruthenium catalyst on a carbon support was used in the oxidation of trichloroethylene at 130°C and 6 atm with dissolved molecular oxygen as the oxidant (8).…”

Section: Introductionmentioning

confidence: 99%

Application of a supported iron oxyhydroxide catalyst in oxidation of benzoic acid by hydrogen peroxide

Chou¹,

Huang²

1999

Chemosphere

140

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Oxidation of benzoic acid was studied via Fenton-like reaction using an innovative supported 3,-FeOOH catalyst. The decomposition kinetics of hydrogen peroxide was investigated first. Oxidation of benzoic acid by hydrogen peroxide was performed to understand the effects of initial pH and hydrogen peroxide dosage. The treatment efficiency of benzoic acid at an initial pH of 3.2 was higher than at initial pHs of 6.0 and 10.0; this can be partly explained by reductive dissolution of ~,-FeOOH. Therefore, the extent of heterogeneous catalysis was evaluated. We found that the majority of oxidation occurred on the catalyst surface, with some occurred in the solution due to iron dissolution of the catalyst,

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“…The incorporation of a metal such as noble metals, Pt and Ru (Gallezot et al 1997;Oliviero et al 2000;Gomes et al 2000;Atwater et al 1996) and transition metals Cu, Fe, Co and Mo (Hu et al, 1999;Alvarez et al, 2002;Quintanilla et al, 2006a) enhances the activity. With the Fe/Activated carbon catalyst (Fe/AC), phenol conversion increases from 50% with bare AC to 95% with the Fe/AC and TOC conversion from 30% to 65%, both at a space time of 9600 g CAT ·min/L at 127 ºC and 8 atm of total pressure.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of the Wet Oxidation of Phenol over an Fe/Activated Carbon Catalyst

Quintanilla

Casas

Rodriquez

et al. 2007

International Journal of Chemical Reactor Engineering

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Wet oxidation of phenol over an Fe/activated carbon catalyst has been studied in a trickle-bed reactor in the following operational window: inlet C phenol=0.5 and 1 g/L, T=100-127• C, PT=3-8 atm, W=0-4.8 g, QL=0.125-2 mL/min and QO2=91.6 NmL/min. The experiments were carried out in the absence of mass transfer limitations. Oxidation and mineralization reactions of phenol are proven to take place on the catalyst surface through a heterogeneous mechanism. Due to the complexity of the phenol oxidation route, simple reaction schemes have been assumed by lumping the intermediate species and generalized kinetic models for phenol and TOC abatement have been proposed. Two kinetic expressions, a power law rate and a Langmuir-Hinshelwood type rate expression, have been considered but only a convergence with statistically reliable parameters was found for the former model. A power law model with first order for phenol and 0.74 for oxygen and apparent activation energy of 74 kJ/mol described the experimental results in the oxidation of phenol well. Mineralization of phenol (TOC abatement) was described by a similar rate expression and takes into account the presence of refractory species such as the low molecular weight acids formed upon phenol oxidation.

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Aqueous phase heterogeneous catalytic oxidation of trichloroethylene

Cited by 30 publications

References 2 publications

Carbon materials and catalytic wet air oxidation of organic pollutants in wastewater

Carbon materials and catalytic wet air oxidation of organic pollutants in wastewater

Application of a supported iron oxyhydroxide catalyst in oxidation of benzoic acid by hydrogen peroxide

Kinetics of the Wet Oxidation of Phenol over an Fe/Activated Carbon Catalyst

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