Bioremediation of the Exxon Valdez oil in Prince William Sound beaches

MARINE POLLUTION BULLETIN

卷:113

Article

Boufadel, Michel C.¹  Geng, Xiaolong¹  Short, Jeff^2,3 

[1] New Jersey Inst Technol, Dept Civil & Environm Engn, Ctr Nat Resources Dev & Protect, Newark, NJ 07102 USA

[2] JWS Consulting, Juneau, AK USA

[3] NOAA, Auke Bay Lab, Juneau, AK USA

关键词: Beach bioremediation;    Exxon Valdez oil spill;    Oil persistence;    Pore water data;    Prince William Sound;    Subsurface;   

DOI  :  10.1016/j.marpolbul.2016.08.086

来源: Elsevier

【 摘 要 】

Oil from the Exxon Valdez laden with polycyclic aromatic hydrocarbons (PAH) has persisted on some beaches in Prince William Sound, Alaska, >20 years after these beaches became contaminated. The degradation rate of the total PAH-(TPAH) is estimated at 1% per year. Low oxygen concentrations were found to be the major factor causing oil persistence, and bioremediation through the injection of hydrogen peroxide and nutrients deep into four beaches in PWS were conducted in the summers of 2011 and 2012. It was found that due to the treatment, the TPAH biodegradation rate was between 13% and 70% during summer 2011 and summer 2012. The results also showed high efficiency in the delivery of oxygen and nutrient to the contaminated areas of the beach. However, the approach has an environmental cost associated with it, and stakeholders would need to conduct a rigorous net environmental benefit analysis (NEBA) for pursuing the bioremediation of submerged contaminated sediments, especially in higher latitudes. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

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