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Environ Sci Pollut Res Int

Title:		"Assessment of crude oil biodegradation in arctic seashore sediments: effects of temperature, salinity, and crude oil concentration"
Author(s):		Sharma P; Schiewer S;
Address:		"Civil and Environmental Engineering Department, Water and Environmental Research Center, University of Alaska Fairbanks, PO Box 755900, Fairbanks, AK, 99775-5900, USA. Civil and Environmental Engineering Department, Water and Environmental Research Center, University of Alaska Fairbanks, PO Box 755900, Fairbanks, AK, 99775-5900, USA. sschiewer@alaska.edu"
Journal Title:		Environ Sci Pollut Res Int
Year:		2016
Volume:		20160413
Issue:		15
Page Number:		14881 - 14888
DOI:		10.1007/s11356-016-6601-9
ISSN/ISBN:		1614-7499 (Electronic) 0944-1344 (Linking)
Abstract:		"The expected increase in offshore oil exploration and production in the Arctic may lead to crude oil spills along arctic shorelines. To evaluate the potential effectiveness of bioremediation to treat such spills, oil spill bioremediation in arctic sediments was simulated in laboratory microcosms containing beach sediments from Barrow (Alaska), spiked with North Slope Crude, and incubated at varying temperatures and salinities. Biodegradation was measured via respiration rates (CO2 production); volatilization was quantified by gas chromatography/mass spectrophotometry (GC/MS) analysis of hydrocarbons sorbed to activated carbon, and hydrocarbons remaining in the sediment were quantified by GC/flame ionization detector (FID). Higher temperature leads to increased biodegradation by naturally occurring microorganisms, while the release of volatile organic compounds was similar at both temperatures. Increased salinity had a small positive impact on crude oil removal. At higher crude oil dosages, volatilization increased, however CO2 production did not. While only a small percentage of crude oil was completely biodegraded, a larger percentage was volatilized within 6-9 weeks"
Keywords:		"Alaska Arctic Regions *Biodegradation, Environmental Geologic Sediments/*analysis Petroleum/*analysis Petroleum Pollution/analysis Salinity Temperature Biodegradation Bioremediation Crude oil Mineralization Sediment Volatilization;"
Notes:		"MedlineSharma, Priyamvada Schiewer, Silke eng Germany 2016/04/14 Environ Sci Pollut Res Int. 2016 Aug; 23(15):14881-8. doi: 10.1007/s11356-016-6601-9. Epub 2016 Apr 13"