Photocatalytic Degradation of Polycyclic Aromatic Hydrocarbons in Offshore Produced Water: Effects of Water Matrix
Publication: Journal of Environmental Engineering
Volume 142, Issue 11
Abstract
To demonstrate the feasibility of photocatalysis for the removal of polycyclic aromatic hydrocarbons (PAHs) from offshore-produced water (OPW), the effects of water matrix were studied by comparing the performance of -induced photocatalysis in distilled water and OPW media. The effects of salinity, insoluble particulate matter, and organic composition were evaluated. The results showed the strong improvements with the addition of catalysts but the enhancement of photocatalysis was restricted by OPW media. The photocatalytic degradation of PAHs with high molecular weights was more sensitive to the variations of salinity and insoluble matter due to their lower solubility. The overall degradation of PAHs was strongly restricted by the organic composition in OPW particularly the aromatic compounds. The aromatic compounds played an important role as ultraviolet-photon absorbents and competed with the photodegradation of PAHs. Because of their abundance in OPW, these species had the most significant effect on the photocatalytic degradation of PAHs.
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Acknowledgments
This research was funded by Natural Sciences and Engineering Research Council of Canada (NSERC), Research and Development Corporation of Newfoundland and Labrador (RDC NL), and Canadian Foundation of Innovation (CFI). Thanks go to the Fisheries and Oceans Canada (DFO) and local industrial partners for their support and technical advice.
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Published In
Journal of Environmental Engineering
Volume 142 • Issue 11 • November 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Nov 11, 2015
Accepted: Feb 29, 2016
Published online: May 24, 2016
Discussion open until: Oct 24, 2016
Published in print: Nov 1, 2016
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