Assessing weathered Endicott oil biodegradation in brackish water

Yves Robert Personna; Thomas King; Michel C. Boufadel; Shuangyi Zhang; Adam Kustka

doi:10.1016/j.marpolbul.2014.07.037

Assessing weathered Endicott oil biodegradation in brackish water

Yves Robert Personna, Thomas King, Michel C. Boufadel, Shuangyi Zhang, Adam Kustka

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7 Scopus citations

Abstract

We evaluated the biodegradability of physically (WAF) and chemically (CEWAF) dispersed oil in brackish water (salinity ~6.5g/L), and the influence of nutrient availability (low nutrient-LN: background water vs. high nutrient-HN: addition of 100mgNO₃-N/L and 10mg PO₄-P/L to background water) on oil biodegradation rates at 15±0.5°C for 42days. No oil removal occurred in WAF compared with CEWAF: 24% in HN and 14% in LN within two weeks. The oil biodegradation concerned mainly alkanes as confirmed by GC/MS analyses. Higher O₂ consumption (10.30mgL^-1day^-1) and CO₂ production (3.89mg CL^-1day^-1) were measured in HN compared with LN (O₂: 2.79mgL^-1day^-1, CO₂:0.18mg CL^-1day^-1). Estimated biomass of hydrocarbon degraders and heterotrophic bacteria was at least an order of magnitude larger in HN than in LN. Combining dispersants with nutrients could enhance oil biodegradation and help improve oil spill mitigation responses.

Original language	English (US)
Pages (from-to)	102-110
Number of pages	9
Journal	Marine Pollution Bulletin
Volume	86
Issue number	1-2
DOIs	https://doi.org/10.1016/j.marpolbul.2014.07.037
State	Published - 2014

All Science Journal Classification (ASJC) codes

Oceanography
Aquatic Science
Pollution

Keywords

Biodegradation
Bioremediation
Brackish water
Dispersants
Endicott oil
Oil spill

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10.1016/j.marpolbul.2014.07.037

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title = "Assessing weathered Endicott oil biodegradation in brackish water",

abstract = "We evaluated the biodegradability of physically (WAF) and chemically (CEWAF) dispersed oil in brackish water (salinity ~6.5g/L), and the influence of nutrient availability (low nutrient-LN: background water vs. high nutrient-HN: addition of 100mgNO3-N/L and 10mg PO4-P/L to background water) on oil biodegradation rates at 15±0.5°C for 42days. No oil removal occurred in WAF compared with CEWAF: 24% in HN and 14% in LN within two weeks. The oil biodegradation concerned mainly alkanes as confirmed by GC/MS analyses. Higher O2 consumption (10.30mgL-1day-1) and CO2 production (3.89mg CL-1day-1) were measured in HN compared with LN (O2: 2.79mgL-1day-1, CO2:0.18mg CL-1day-1). Estimated biomass of hydrocarbon degraders and heterotrophic bacteria was at least an order of magnitude larger in HN than in LN. Combining dispersants with nutrients could enhance oil biodegradation and help improve oil spill mitigation responses.",

keywords = "Biodegradation, Bioremediation, Brackish water, Dispersants, Endicott oil, Oil spill",

author = "Personna, {Yves Robert} and Thomas King and Boufadel, {Michel C.} and Shuangyi Zhang and Adam Kustka",

note = "Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd.",

year = "2014",

doi = "10.1016/j.marpolbul.2014.07.037",

language = "English (US)",

volume = "86",

pages = "102--110",

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AU - Personna, Yves Robert

AU - King, Thomas

AU - Boufadel, Michel C.

AU - Zhang, Shuangyi

AU - Kustka, Adam

PY - 2014

Y1 - 2014

N2 - We evaluated the biodegradability of physically (WAF) and chemically (CEWAF) dispersed oil in brackish water (salinity ~6.5g/L), and the influence of nutrient availability (low nutrient-LN: background water vs. high nutrient-HN: addition of 100mgNO3-N/L and 10mg PO4-P/L to background water) on oil biodegradation rates at 15±0.5°C for 42days. No oil removal occurred in WAF compared with CEWAF: 24% in HN and 14% in LN within two weeks. The oil biodegradation concerned mainly alkanes as confirmed by GC/MS analyses. Higher O2 consumption (10.30mgL-1day-1) and CO2 production (3.89mg CL-1day-1) were measured in HN compared with LN (O2: 2.79mgL-1day-1, CO2:0.18mg CL-1day-1). Estimated biomass of hydrocarbon degraders and heterotrophic bacteria was at least an order of magnitude larger in HN than in LN. Combining dispersants with nutrients could enhance oil biodegradation and help improve oil spill mitigation responses.

AB - We evaluated the biodegradability of physically (WAF) and chemically (CEWAF) dispersed oil in brackish water (salinity ~6.5g/L), and the influence of nutrient availability (low nutrient-LN: background water vs. high nutrient-HN: addition of 100mgNO3-N/L and 10mg PO4-P/L to background water) on oil biodegradation rates at 15±0.5°C for 42days. No oil removal occurred in WAF compared with CEWAF: 24% in HN and 14% in LN within two weeks. The oil biodegradation concerned mainly alkanes as confirmed by GC/MS analyses. Higher O2 consumption (10.30mgL-1day-1) and CO2 production (3.89mg CL-1day-1) were measured in HN compared with LN (O2: 2.79mgL-1day-1, CO2:0.18mg CL-1day-1). Estimated biomass of hydrocarbon degraders and heterotrophic bacteria was at least an order of magnitude larger in HN than in LN. Combining dispersants with nutrients could enhance oil biodegradation and help improve oil spill mitigation responses.

KW - Biodegradation

KW - Bioremediation

KW - Brackish water

KW - Dispersants

KW - Endicott oil

KW - Oil spill

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Assessing weathered Endicott oil biodegradation in brackish water

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All Science Journal Classification (ASJC) codes

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