Biotransformation of natural gas and oil compounds associated with marine oil discharges

TitleBiotransformation of natural gas and oil compounds associated with marine oil discharges
Publication TypeJournal Article
Year of Publication2017
AuthorsBrakstad OG, Almas I.K, Krause D.F
Date PublishedSep
ISBN Number0045-6535
Accession NumberWOS:000403991700067
KeywordsOil and Gas Degradation
AbstractField data from the Deepwater Horizon (DWH) oil spill in the Gulf of Mexico (GoM) suggested that oxidation of gas compounds stimulated biodegradation of oil compounds in the deep sea plume. We performed experiments with local seawater from a Norwegian fjord to examine if the presence of dissolved gas compounds (methane, ethane and propane) affected biodegradation of volatile oil compounds, and if oil compounds likewise affected gas compound oxidation. The results from the experiment showed comparable oil compound biotransformation rates in seawater at 5 degrees C between seawater with and without soluble gases. Gas oxidation was not affected by the presence of volatile oil compounds. Contrary to DWH deep sea plume data, propane oxidation was not faster than methane oxidation. These data may reflect variations between biodegradation of oil and gas in seawater environments with different history of oil and gas exposure. (C) 2017 Elsevier Ltd. All rights reserved.