Biodegradation of dispersed weathered Endicott oil in Prince William Sound water

TY - JOUR

T1 - Biodegradation of dispersed weathered Endicott oil in Prince William Sound water

AU - Pan, Zhong

AU - Personna, Yves Robert

AU - Boufadel, Michel C.

AU - King, Thomas

AU - Mason, Jennifer

AU - Axe, Lisa

AU - Geng, Xiaolong

N1 - Publisher Copyright: © 2017 American Society of Civil Engineers.

PY - 2017/9/1

Y1 - 2017/9/1

N2 - This paper investigates biodegradation of physically dispersed oil (WAF) and chemically dispersed oil (CEWAF). Two salinities are considered: low (6.5‰) and high salinity (29‰), and for each salinity two nutrient conditions are considered: low nutrient, using the background concentration (0.05 mg-N L-1 and 0.10-0.20 mg-P L-1) and high nutrient, using concentrations of 100 mg-N L-1 and 10 mg-P L-1. Results show that the oil concentration for the WAF is ∼20 times less than that resulting from the CEWAF. In the WAF, the biodegradation of polycyclic aromatic hydrocarbons (PAHs) was not detected due to extremely low concentration. In contrast, the biodegradation of the alkanes and the methylated PAHs (mPAHs) is as high as 72% after 42 days and seem to be unaffected by the nutrient concentration. In the CEWAF, considerable biodegradation is noted for the alkanes, PAHs, and mPAHs. The enhanced oil biodegradation in the presence of dispersant suggests that chemical dispersion might be an effective approach in the treatment of spilled oil.

AB - This paper investigates biodegradation of physically dispersed oil (WAF) and chemically dispersed oil (CEWAF). Two salinities are considered: low (6.5‰) and high salinity (29‰), and for each salinity two nutrient conditions are considered: low nutrient, using the background concentration (0.05 mg-N L-1 and 0.10-0.20 mg-P L-1) and high nutrient, using concentrations of 100 mg-N L-1 and 10 mg-P L-1. Results show that the oil concentration for the WAF is ∼20 times less than that resulting from the CEWAF. In the WAF, the biodegradation of polycyclic aromatic hydrocarbons (PAHs) was not detected due to extremely low concentration. In contrast, the biodegradation of the alkanes and the methylated PAHs (mPAHs) is as high as 72% after 42 days and seem to be unaffected by the nutrient concentration. In the CEWAF, considerable biodegradation is noted for the alkanes, PAHs, and mPAHs. The enhanced oil biodegradation in the presence of dispersant suggests that chemical dispersion might be an effective approach in the treatment of spilled oil.

KW - Biodegradation

KW - Dispersant

KW - Nutrient

KW - Oil

KW - Salinity

UR - http://www.scopus.com/inward/record.url?scp=85020729696&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85020729696&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)EE.1943-7870.0001238

DO - 10.1061/(ASCE)EE.1943-7870.0001238

M3 - Article

SN - 0733-9372

VL - 143

JO - Journal of Environmental Engineering (United States)

JF - Journal of Environmental Engineering (United States)

IS - 9

M1 - 04017044

ER -