Highly concentrated phenolic wastewater treatment by heterogeneous and homogeneous photocatalysis : mechanism study by FTIR-ATR

The degradation of high phenol concentrations (1 g/L) in water solutions by TiO2 photocatalysis and the photo-Fenton reaction has been studied. From the obtained data it may be suggested that degradation of phenol by TiO2-UV takes place onto the catalyst surface by means of peroxo-compounds formatio...

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Veröffentlicht in:Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 44(2001), 5 vom: 02., Seite 229-36
1. Verfasser: Araña, J (VerfasserIn)
Weitere Verfasser: Tello-Rendón, E, Doña-Rodríguez, J M, Campo, C V, Herrera-Melidán, J A, González-Díaz, Pérez-Peña, J
Format: Aufsatz
Sprache:English
Veröffentlicht: 2001
Zugriff auf das übergeordnete Werk:Water science and technology : a journal of the International Association on Water Pollution Research
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Coloring Agents Fenton's reagent Phenols titanium dioxide 15FIX9V2JP Hydroxyl Radical 3352-57-6 Hydrogen Peroxide mehr... BBX060AN9V Titanium D1JT611TNE Iron E1UOL152H7
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245 1 0 |a Highly concentrated phenolic wastewater treatment by heterogeneous and homogeneous photocatalysis  |b mechanism study by FTIR-ATR 
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520 |a The degradation of high phenol concentrations (1 g/L) in water solutions by TiO2 photocatalysis and the photo-Fenton reaction has been studied. From the obtained data it may be suggested that degradation of phenol by TiO2-UV takes place onto the catalyst surface by means of peroxo-compounds formation. At low phenol concentrations other mechanism, the insertion of OH. radicals, may be favored. On the other hand, highly concentrated phenol aqueous solutions treatment by the photo-Fenton reaction gives rise to the formation of polyphenolic polymers. These seem to reduce the process rate. Degradation intermediates have been identified by HPLC and FTIR. The FTIR study of the catalyst surface has shown infrared bands attributable to different chemisorbed peroxo-compounds, formates, ortho-formates and carboxylates that can inactivate the catalyst 
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650 4 |a Research Support, Non-U.S. Gov't 
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700 1 |a Tello-Rendón, E  |e verfasserin  |4 aut 
700 1 |a Doña-Rodríguez, J M  |e verfasserin  |4 aut 
700 1 |a Campo, C V  |e verfasserin  |4 aut 
700 1 |a Herrera-Melidán, J A  |e verfasserin  |4 aut 
700 1 |a González-Díaz  |e verfasserin  |4 aut 
700 1 |a Pérez-Peña, J  |e verfasserin  |4 aut 
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