Journal ArticleDOI
Scale-up and Modeling of Fixed-Bed Reactors for Catalytic Phenol Oxidation over Adsorptive Active Carbon
Somsaluay Suwanprasop,A. Eftaxias,Frank Stüber,Isabelle Polaert,Carine Julcour-Lebigue,Henri Delmas +5 more
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In this article, the wet air oxidation of phenol over a commercial active carbon catalyst has been studied in laboratory-scale and pilot-plant fixed-bed reactors at mild temperatures and oxygen partial pressures of 120−160 °C and 0.05−0.2 MPa, respectively.Abstract:
The wet air oxidation of phenol over a commercial active carbon catalyst has been studied in laboratory-scale and pilot-plant fixed-bed reactors at mild temperatures and oxygen partial pressures of 120−160 °C and 0.05−0.2 MPa, respectively. The performances of the fixed-bed reactors have been assessed and compared to each other for both up- and downflow operation mode. Depending on the flow mode and reactor scale, distinct phenol destruction rates have been observed in the experiments. A series of batch experiments are carried out to obtain phenol removal kinetics, which are subsequently implemented in the modeling of the pilot-plant fixed-bed reactor. A one-dimensional, nonisothermal piston dispersion model is developed to describe in detail the interplay of reaction kinetics, gas−liquid hydrodynamics, and heat and mass transfer in both flow directions. The model predicts reasonably well the experimental data, thus allowing for a thorough explanation of the observed pilot-plant reactor performance.read more
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Journal ArticleDOI
Heterogeneous catalytic wet air oxidation of refractory organic pollutants in industrial wastewaters: a review.
Kyoung-Hun Kim,Son Ki Ihm +1 more
TL;DR: The present review is concerned about the literatures published in this regard and discussions are made on the reaction mechanisms and kinetics proposed for heterogeneous CWAO and also on the typical catalyst deactivations in heterogeneousCWAO, i.e. carbonaceous deposits and metal leaching.
Journal ArticleDOI
Degradation of paracetamol by catalytic wet air oxidation and sequential adsorption - Catalytic wet air oxidation on activated carbons
Isariebel Quesada-Peñate,Carine Julcour-Lebigue,Carine Julcour-Lebigue,Ulises Jáuregui-Haza,Anne-Marie Wilhelm,Anne-Marie Wilhelm,Henri Delmas,Henri Delmas +7 more
TL;DR: The catalytic wet air oxidation of paracetamol on activated carbon was investigated both as a water treatment technique using an autoclave reactor and as a regenerative treatment of the carbon after adsorption in a sequential fixed bed process.
Journal ArticleDOI
Biodegradability enhancement of coking wastewater by catalytic wet air oxidation using aminated activated carbon as catalyst
TL;DR: In this paper, the catalytic wet oxidation (CWO) under mild conditions was employed for pre-treatment of low-biodegradable coking wastewater, where the catalysts were a commercial activated carbon (AC) and its ammonia-treated samples at various temperatures and were characterized by N2 adsorption/desorption and X-ray photoelectron spectroscopy.
Journal ArticleDOI
Experimental and modeling of fixed-bed reactor for yellow phosphorous tail gas purification over impregnated activated carbon
TL;DR: In this article, two kinds of impregnated activated carbon catalysts and catalytic oxidation reaction for purifying H 2 S and PH 3 contained in tail gas have been studied in laboratory-scale and pilot-plant fixed-bed reactor.
Journal ArticleDOI
AD-OX: A sequential oxidative process for water treatment—Adsorption and batch CWAO regeneration of activated carbon
TL;DR: In this article, a sequential process for water treatment involving usual adsorption on activated carbon (AC) followed by wet air catalytic oxidation of the adsorbed pollutants has been carried out in a fixed bed reactor with a mixture of two model pollutants.
References
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TL;DR: In this article, the authors estimate physical properties of pure components and Mixtures and show that the properties of these components and mixtures are similar to those of ideal gases and liquids.
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Particle-Fluid Mass Transfer in Fixed and Fluidized Beds
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Catalytic Abatement of Water Pollutants
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