scholarly journals Evaluation of degradation and kinetics parameters of acid orange 7 through wet air oxidation process

2018 ◽  
Vol 96 (11) ◽  
pp. 2450-2454 ◽  
Author(s):  
Marine Minière ◽  
Olivier Boutin ◽  
Audrey Soric
Keyword(s):  
Oxidation Process ◽  
Acid Orange 7 ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Kinetics Parameters ◽  
Acid Orange

Wet air and catalytic wet air oxidation of several azodyes from wastewaters: the beneficial role of catalysis

2009 ◽  
Vol 60 (8) ◽  
pp. 1989-1999 ◽  
Author(s):  
A. Rodríguez ◽  
J. García ◽  
G. Ovejero ◽  
M. Mestanza
Keyword(s):  
Azo Dyes ◽  
Oxygen Demand ◽  
Organic Carbon Content ◽  
Reactive Black 5 ◽  
Catalytic Wet Air Oxidation ◽  
Acid Orange 7 ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Acid Orange ◽  
Direct Blue

Degradation of several azo dyes, Acid Orange 7 (AO7), Acid Orange 74 (AO74), Direct Blue 71 (DB71), Reactive Black 5 (RB5) and Eriochrome Blue Black B (EBBB), well-known non-biodegradable mono, di and tri azo dyes has been studied using, wet-air oxidation (WAO) and catalytic wet air oxidation (CWAO). The efficiency of substrate decolorization and mineralization in each process has been comparatively discussed by evolution concentration, chemical oxygen demand, total organic carbon content and toxicity of dyes solutions. The most efficient method on decolorization and mineralization (TOC) was observed to be CWAO process. Mineralization efficiency with wet air and catalytic wet air oxidation essays was observed in the order of mono-azo > di-azo > tri-azo dye. Final solutions of CWAO applications after 180 min treatment can be disposed safely to environment.

Highly effective oxide catalyst for the detoxification of oil mill wastewaters by the wet air oxidation process

2013 ◽  
pp. 1-6 ◽  
Author(s):  
Francesco Arena ◽  
Debora Lombardo ◽  
Giovanni Drago Ferrante ◽  
Cristina Italiano ◽  
Lorenzo Spadaro ◽  
...  
Keyword(s):  
Oxide Catalyst ◽  
Oxidation Process ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Highly Effective

Model identification of wet-air oxidation process thermal decomposition

1970 ◽  
Vol 4 (1) ◽  
pp. 33-59 ◽  
Author(s):  
Takeichiro Takamatsu ◽  
Iori Hashimoto ◽  
Suteaki Sioya
Keyword(s):  
Thermal Decomposition ◽  
Oxidation Process ◽  
Model Identification ◽  
Air Oxidation ◽  
Wet Air Oxidation

Removal of Phenol in Wastewater by Wet Air Oxidation

1973 ◽  
Vol 8 (1) ◽  
pp. 148-167 ◽  
Author(s):  
B.B. Pruden ◽  
D.R. Ferguson
Keyword(s):  
Suspended Solids ◽  
Oxidation Process ◽  
Residence Times ◽  
Waste Waters ◽  
Pulp Mills ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Feed Concentration ◽  
Oxidation Of Phenol ◽  
Made In

Abstract The Wet Air Oxidation process was developed by F.J. Zimmermann for removing suspended solids from waste waters, notably waste water from pulp mills. The basic idea behind the process is to combine the waste stream and air under suitable conditions so that liquid water is present. In theory waste organic is oxidized to CO2 and water, and thus removed by conversion to a harmless gas. In practice there are problems with incomplete combustion and tar formation especially in the oxidation of phenol. This project was undertaken to try and resolve these problems. Furthermore, specifications in the literature are for mixed reactors, which have financial disadvantages due to mixer sealing problems. This study is part 1 of a two part study to investigate unmixed reactors for the job of Wet Air Oxidation. The study was made in an unmixed reactor at temperatures of 200 and 250°C Pressure was varied from 800 to 2200 psi, and residence times from 0.25 to 2 hours. Phenol feed concentration was either 1400 or 3000 mg/L for all runs. Conversions of over 99% were achieved for conditions at the highest pressure and either temperature.

Thermodynamic and kinetic study of phenol degradation by a non-catalytic wet air oxidation process

Chemosphere ◽  
2011 ◽  
Vol 84 (9) ◽  
pp. 1208-1215 ◽  
Author(s):  
Sébastien Lefèvre ◽  
Olivier Boutin ◽  
Jean-Henry Ferrasse ◽  
Laure Malleret ◽  
Rémy Faucherand ◽  
...  
Keyword(s):  
Kinetic Study ◽  
Oxidation Process ◽  
Phenol Degradation ◽  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation
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