Integrating Dispersants in Oil Spill Response in Arctic and Other Icy Environments

Lewis, Alun; Prince, Roger C.

doi:10.1021/acs.est.7b06463

Cited by 44 publications

(20 citation statements)

References 189 publications

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“…Dispersant application could prevent shoreline contamination from large oil slicks. This option is appealing when other response options are unavailable due to weather conditions or hard to access locations (e.g., ice covered regions, deep water environments) (Lewis and Prince, 2018).…”

Section: Introductionmentioning

confidence: 99%

Fish Waste Based Lipopeptide Production and the Potential Application as a Bio-Dispersant for Oil Spill Control

Zhu

Zhang

Cai

et al. 2020

Front. Bioeng. Biotechnol.

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Section: Introductionmentioning

confidence: 99%

Fish Waste Based Lipopeptide Production and the Potential Application as a Bio-Dispersant for Oil Spill Control

Zhu

Zhang

Cai

et al. 2020

Front. Bioeng. Biotechnol.

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“…Environmental concentrations of dispersed oil over the period of biodegradation is expected to be below 1 mg L −1 (Lee et al 2013). It has also been argued that the use of dispersants may be of advantage in the Arctic, since the chemicals can be applied by plane and are therefore less logistically challenging than mechanical treatment (Lewis and Prince 2018).…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of dispersed oil in natural seawaters from Western Greenland and a Norwegian fjord

et al. 2018

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With increasing oil exploration, production and transportation in the Arctic, predictions of the fate of spilled oil become important, including oil compound biodegradation. The use of chemical dispersants may result in increased biodegradation due to the generation of dispersions consisting of small oil droplets, but only few studies have focused on biodegradation of chemically dispersed oil in Arctic seawater. In this study we compared oil biotransformation in Arctic and temperate seawaters collected from Western Greenland (Disko Bay, surface and from 80 m depth) and a Norwegian fjord (Trondheimsfjord, surface). A naphthenic oil, premixed with a dispersant, was dispersed in the seawaters from the different sources, and the dispersions incubated in low concentrations in a carousel system at 4-5 °C for up to 64 days. Targeted oil compounds (n-alkanes, BTEX, naphthalenes and PAHs) were biotransformed in both Arctic and temperate seawaters, although the degradation was faster in the temperate seawater. In the Arctic seawater, transformation was faster in the surface than in the subsurface seawater. Calculations of biotransformation rates and half-lives of oil compound groups representing 70-80% of fresh oils also showed significantly faster depletion in the temperate than the Arctic seawater. Microbial analyses revealed differences between the bacterial communities in the seawater sources during oil biodegradation. The results emphasized, that oil compounds are biodegraded in Arctic seawater, but degradation potential and rates may vary between seawaters from different sources.

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“…The Arctic region has been predicted to be extremely sensitive to MOS formation (Murk et al, 2020), and the environmental conditions, especially temperature, light and the presence of ice, will be very different from the Gulf of Mexico. Dispersants may be the only possible oil-spill response option in many cases (Lewis and Prince, 2018). Psychrophilic hydrocarbon degraders are well-characterized (Brakstad et al, 2015b;Gregson et al, 2020), and although overall biodegradation of oil components may be a little slower in incubations with polar compared with temperate seawater (McFarlin et al, 2014;Garneau et al, 2016;Brakstad et al, 2018a,c), this may reflect the particularly pristine waters that were used in these studies, and the lower natural abundance of oil-degrading microbes.…”

Section: Understanding Mos Formation and Behavior Beyond The Gulf Of Mexicomentioning

confidence: 97%

Marine Oil Snow, a Microbial Perspective

Gregson

McKew

Holland³

et al. 2021

Front. Mar. Sci.

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Under certain conditions, dispersed crude oil in the sea combines with organisms, organic matter, and minerals to form marine oil snow (MOS), thereby contributing to the sinking of oil to the seafloor. Marine microbes are the main players in MOS formation, particularly via the production of extracellular polymeric substances. Distinct groups of microbes also consume the majority of the hydrocarbons during descent, leading to enrichment of the less bioavailable hydrocarbons and asphaltenes in the residue. Here we discuss the dynamics of microbial communities in MOS together with their impacts on MOS evolution. We explore the effects of dispersant application on MOS formation, and consider ways in which laboratory experiments investigating MOS formation can be more representative of the situation in the marine environment, which in turn will improve our understanding of the contribution of MOS to the fate of spilled oil.

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Integrating Dispersants in Oil Spill Response in Arctic and Other Icy Environments

Cited by 44 publications

References 189 publications

Fish Waste Based Lipopeptide Production and the Potential Application as a Bio-Dispersant for Oil Spill Control

Fish Waste Based Lipopeptide Production and the Potential Application as a Bio-Dispersant for Oil Spill Control

Biodegradation of dispersed oil in natural seawaters from Western Greenland and a Norwegian fjord

Marine Oil Snow, a Microbial Perspective

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