| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 46969 | Applied Catalysis B: Environmental | 2011 | 8 Pages |
Dissolved oxygen concentration variations have been investigated during the photo-Fenton process. Using Paracetamol as a model pollutant and dissolved organic carbon (DOC) removal as the priority objective, we have studied the effects of irradiance intensity (13–87 W/m2), iron concentration (0.09–0.45 mM), hydrogen peroxide concentration (9–45 mM) and finally DOC concentration (4–25 mM) on the relationship between the mineralization rate, the H2O2 reaction rate and the oxygen generation rate. A high level of oxygen generation is indicative of inefficient conditions whereas a decrease in dissolved oxygen concentration (i.e. generation rates near to zero) indicates a lack of hydrogen peroxide. As a consequence, dissolved oxygen monitoring has been presented as an easy, measurable tool for studying the evolution of the photo-Fenton process and its efficiency.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► We study dissolved oxygen concentration variations during the photo-Fenton process. ► We study the relationship between DOC reaction, H2O2 reaction and oxygen generation. ► A high level of oxygen generation is indicative of inefficient conditions. ► A decrease in dissolved oxygen concentration indicates a lack of hydrogen peroxide. ► Dissolved oxygen monitoring is proposed for studying the photo-Fenton process.
