Heterogeneous catalytic wet air oxidation of refractory organic pollutants in industrial wastewaters: a review.

Superparamagnetic Fe3O4 nanoparticles as catalysts for the catalytic oxidation of phenolic and aniline compounds.

Towards advanced aqueous dye removal processes: a short review on the versatile role of activated carbon.

http://www.ipb.pt/~htgomes/FCT115275/1.pdf

Catalytic properties of carbon materials for wet oxidation of aniline.

Catalytic activity, stability and structure of multi-walled carbon nanotubes in the wet air oxidation of phenol

Continuous catalytic wet air oxidation (CWAO) was investigated as a suitable precursor for the biological treatment of industrial wastewater that contained phenols (phenol, o-cresol, 2-chlorophenol and p-nitrophenol), aniline, sulfolane, nitrobenzene or sodium dodecylbenzene sulfonate (DBS). Seventy-two-hour tests were carried out in a fixed bed reactor in trickle flow regime, using a commercial activated carbon (AC) as catalyst. The temperature and total pressure were 140 8C and 13.1 bar, respectively. The influence of hydroxyl-, methyl-, chloride-, nitro-, sulfo- and sulfonic-substituents on the oxidation mechanism of aromatic compounds, the occurrence of oxidative coupling reactions over the AC, and the catalytic activity (in terms of substrate elimination) were established. The results show that the AC without any supported active metal behaves bifunctionally as adsorbent and catalyst, and is active enough to oxidate phenol, o-cresol, 2-chlorophenol and DBS, giving conversions between 30 and 55% at the conditions tested. The selectivity to the production of carbon dioxide was considerable with total organic carbon (TOC) abatement between 15 and 50%. The chemical oxygen demand (COD) reduction was between 12 and 45%. In turn, aniline, sulfolane, p-nitrophenol and nitrobenzene conversions were below 5% and there was almost no TOC abatement or COD reduction, which shows the refractory nature of these compounds. # 2004 Elsevier B.V. All rights reserved.

/pdf/catalytic-wet-air-oxidation-of-substituted-phenols-using-44un30q1wx.pdf

Catalytic wet air oxidation of substituted phenols using activated carbon as catalyst

Wet air oxidation (WAO) as a precursor to biological treatment of substituted phenols : Refractory nature of the WAO intermediates

Calibration of a kinetic model for wet air oxidation (WAO) of substituted phenols: Influence of experimental data on model prediction and practical identifiability

M. Eugenia Suárez-Ojeda

Papers

Catalytic wet air oxidation of substituted phenols using activated carbon as catalyst

Wet air oxidation (WAO) as a precursor to biological treatment of substituted phenols : Refractory nature of the WAO intermediates

Calibration of a kinetic model for wet air oxidation (WAO) of substituted phenols: Influence of experimental data on model prediction and practical identifiability