| Title: | Hydrocarbon removal from bilgewater by a combination of air-stripping and photocatalysis |
| Author(s): | Cazoir D; Fine L; Ferronato C; Chovelon JM; |
| Address: | "University Lyon 1, Lyon, F-69626, France, CNRS, UMR5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon, Villeurbanne, F-69626, France. david.cazoir@ircelyon.univ-lyon1.fr" |
| DOI: | 10.1016/j.jhazmat.2012.07.037 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "In order to prevent hydrocarbon discharge at sea from the bilge of ships, the International Maritime Organization (IMO) enacted the MARPOL 73/78 convention in which effluents are now limited to those with maximum oil content of 15 ppmv. Thus, photocatalysis and air-stripping were combined for the hydrocarbon removal from a real oily bilgewater sample and an original monitoring of both aqueous and gaseous phases was performed by GC/MS to better understand the process. Our results show that the hydrocarbon oil index [HC] can be reduced to its maximum permissible value of 15 ppmv (MARPOL) in only 8.5h when photocatalysis and air-stripping are used together in a synergistic way, as against 17 h when photocatalysis is used alone. However, this air-assisted photocatalytic process emits a large quantity of volatile organic compounds (VOC) and, within the first four hours, ca. 10% of the hydrocarbon removal in the aqueous phase is actually just transferred into the gaseous one. Finally, we highlight that the n-alkanes with a number of carbon atoms higher than 15 (N(C)>15) are those which most decrease the rate of [HC] removal" |
| Keywords: | "Air Air Pollutants/analysis Catalysis Hydrocarbons/analysis/*chemistry/radiation effects Oxygen/chemistry Photochemical Processes Ships *Ultraviolet Rays Volatile Organic Compounds/analysis Waste Disposal, Fluid/*methods Wastewater/analysis/chemistry Wate;" |
| Notes: | "MedlineCazoir, D Fine, L Ferronato, C Chovelon, J-M eng Research Support, Non-U.S. Gov't Netherlands 2012/08/09 J Hazard Mater. 2012 Oct 15; 235-236:159-68. doi: 10.1016/j.jhazmat.2012.07.037. Epub 2012 Jul 22" |
