Kinetics of phenol oxidation in a trickle bed reactor over active carbon catalyst

2005 ◽  
Vol 80 (6) ◽  
pp. 677-687 ◽  
Author(s):  
Athanasios Eftaxias ◽  
Josep Font ◽  
Agusti Fortuny ◽  
Azael Fabregat ◽  
Frank Stüber
Keyword(s):  
Active Carbon ◽  
Phenol Oxidation ◽  
Carbon Catalyst ◽  
Trickle Bed Reactor ◽  
Trickle Bed ◽  
Kinetics Of

Kinetics of glucose hydrogenation in a trickle-bed reactor

1995 ◽  
Vol 24 (1-2) ◽  
pp. 29-34 ◽  
Author(s):  
N. Déchamp ◽  
A. Gamez ◽  
A. Perrard ◽  
P. Gallezot
Keyword(s):  
Trickle Bed Reactor ◽  
Trickle Bed ◽  
Kinetics Of

Conventional and wet proofed CuO/Al2O3 catalysts for phenol oxidation: deactivation studies in a trickle bed reactor

2007 ◽  
Vol 82 (5) ◽  
pp. 481-487 ◽  
Author(s):  
Rosa J Fenoglio ◽  
Paola A Massa ◽  
Fernando D Ivorra ◽  
Patricia M Haure
Keyword(s):  
Phenol Oxidation ◽  
Trickle Bed Reactor ◽  
Trickle Bed

Kinetics of diolefin hydrogenation ina a trickle bed reactor

1976 ◽  
Vol 31 (9) ◽  
pp. 759-766 ◽  
Author(s):  
A. Somers ◽  
Y.T. Shah ◽  
J. Paraskos
Keyword(s):  
Trickle Bed Reactor ◽  
Trickle Bed ◽  
Kinetics Of

Modelling wet-air oxidation of phenol in a trickle-bed reactor using active carbon as a catalyst

2014 ◽  
Vol 91 (3) ◽  
pp. 596-607 ◽  
Author(s):  
Daniel Janecki ◽  
Anna Szczotka ◽  
Andrzej Burghardt ◽  
Grażyna Bartelmus
Keyword(s):  
Active Carbon ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Trickle Bed Reactor ◽  
Oxidation Of Phenol ◽  
Trickle Bed

Catalytic Oxidation of Substituted Phenols in a Trickle Bed Reactor

1997 ◽  
Vol 62 (6) ◽  
pp. 866-874 ◽  
Author(s):  
Vratislav Tukač ◽  
Jiří Hanika
Keyword(s):  
Active Carbon ◽  
Space Velocity ◽  
Hydrodynamic Effect ◽  
Catalytic Wet Oxidation ◽  
Trickle Bed Reactor ◽  
Three Phase ◽  
Comparable Activity ◽  
Trickle Bed ◽  
The Stability ◽  
Active Carbon Black

The catalytic wet oxidation was studied of phenol, 2-aminophenol, salicylic acid and 5-sulfosalicylic acid performed in a laboratory trickle bed reactor. A three-phase high-pressure catalytic reactor with an inside diameter of 18 mm and length of catalytic bed of 200 mm was operated at temperatures 90-180 °C, pressures 2-7 MPa and liquid space velocity 1-10 h-1. Simultaneously, the catalytic activity and the stability of extruded active carbon black Chezacarb and active carbon Chemviron were tested. At a comparable activity, the active carbon Chemviron exhibited a greater mechanical strength and stability. The influence of phenol substituents on the oxidation conversion corresponded to their inductive effect: The electropositive amino group supported the oxidation, on the contrary, the presence of carboxy and sulfo groups on aromatic ring led to only low conversion. The complications on evaluating the experimental data are caused by the non-isothermal temperature profile along the catalyst bed, the non-ideal oxygen dissolution in aqueous solutions and especially the hydrodynamic effect of flow rate on the degree of catalyst wetting and thus on the entire effectiveness of the oxidation process.

Performance of Trickle Bed Reactor and Active Carbon in the Liquid Phase Oxidation of Phenol

2010 ◽  
Vol 8 (1) ◽  
Author(s):  
Nigus Gabbiye ◽  
Josep Font ◽  
Agusti Fortuny ◽  
Christophe Bengoa ◽  
Azael Fabregat ◽  
...  
Keyword(s):  
Liquid Flow ◽  
Active Carbon ◽  
Operating Conditions ◽  
Catalyst Stability ◽  
Wastewater Remediation ◽  
Air Oxidation ◽  
Trickle Bed Reactor ◽  
Phenolic Pollutants ◽  
Wide Range ◽  
Trickle Bed

Application of trickle-bed reactor and active carbon catalyst to catalytic wet air oxidation of phenolic pollutants is explored over a wide range of operating conditions. The study focuses on the assessment of key engineering aspects such as reactor start-up, gas-liquid flow directions and effects of temperature, pressure, phenol feed concentration and liquid flow rate on activity and stability performance of unsupported active carbon. Moreover, for analyzing the potential integration of CWAO as a pre-treatment in biological wastewater remediation, intermediate distribution and biodegradability enhancement of treated effluents are obtained from HPLC analysis and respirometry assays, respectively. Finally, since slow carbon burn-off is occurring at CWAO conditions, some promising options for improvement of catalyst stability are pointed out on both molecular (iron coating of active carbon) and reactor (periodic reactor operation) scale.

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