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Comparison of oil dispersant effectiveness in different weather.
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Comparison of oil dispersant effectiveness in different weather.
Comparison of oil dispersant effectiveness in different weather.
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439968
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Renier, Natalie
Title
Comparison of oil dispersant effectiveness in different weather.
Comparison of oil dispersant effectiveness in different weather.
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Date
03/28/2017
File name
Dispersants_sunlight.jpg
Notes
Caption from Oceanus magazine, Vol. 53, No. 2, pg. 13: Left panel: On cloudy days, the solvents are effective, enabling surfactants to create small droplets that can more easily sink, or be diluted in the ocean, eaten by microbes, or evaporated. Right panel: On sunny days, sunlight oxidizes oil into compounds that are only partially soluble in the solvent. This limits surfactants ability to break oil into droplets. Image Of the Day caption: A recent study by WHOI scientists Collin Ward and Chris Reddy showed that sunlight plays a critical and previously overlooked role in oil spills. Light energy rapidly alters the chemistry of oil floating atop the oceanwhich could dramatically change how responders use dispersants to clean up spills. Dispersants contain detergents (surfactants), which break oil into small droplets that can disperse in the ocean. They also contain an organic solvent that helps surfactants mix with both oil and water. The solvent is not as effective on photo-oxidized oil, so dispersants are less effective on oil that has floated on the sea surface for a few days, especially during sunny weather.
Caption from Oceanus magazine, Vol. 53, No. 2, pg. 13:
Left panel:
On cloudy days, the solvents are effective, enabling surfactants to create small droplets that can more easily sink, or be diluted in the ocean, eaten by microbes, or evaporated.
Right panel:
On sunny days, sunlight oxidizes oil into compounds that are only partially soluble in the solvent. This limits surfactants ability to break oil into droplets.
Image Of the Day caption:
A recent study by WHOI scientists Collin Ward and Chris Reddy showed that sunlight plays a critical and previously overlooked role in oil spills. Light energy rapidly alters the chemistry of oil floating atop the oceanwhich could dramatically change how responders use dispersants to clean up spills. Dispersants contain detergents (surfactants), which break oil into small droplets that can disperse in the ocean. They also contain an organic solvent that helps surfactants mix with both oil and water. The solvent is not as effective on photo-oxidized oil, so dispersants are less effective on oil that has floated on the sea surface for a few days, especially during sunny weather.
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© Woods Hole Oceanographic Institution
©Shane Gross/Greenpeace
Adobe Farmhouse Photography
Getty Images/iStockphoto
Illustration by Eric S. Taylor, WHOI Creative
Illustration by Jack Cook
Illustration by Jayne Doucette
Illustration by Natalie Renier, WHOI Creative
Marine Imaging Technologies, LLC © Woods Hole Oceanographic Institution
Photo by Amy Apprill
Photo by Craig LaPlante
Photo by Daniel Hentz
Photo by Danielle Fino
Photo by Darlene Trew Crist
Photo by Elise Hugus
Photo by Hannah Piecuch
Photo by Jayne Doucette
photo by Jeff Yonover
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Photo by Ken Kostel
Photo by Marley L. Parker
Photo by Matthew Barton
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Photo by Véronique LaCapra
Photo courtesy of Woods Hole Oceanographic Institution Archives
Photographie : @alexis.rosenfeld
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Video by Craig LaPlante
Video by Danielle Fino
Video by Hannah Piecuch
Video by Jayne Doucette
Video by Ken Kostel
Video by Matthew Barton
-- Other --
Illustration by Natalie Renier
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Dispersants_sunlight.jpg
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etaylor: Oceanus magazine, Vol. 53, No. 2, pg. 13 jdoucette: Image Of the Day, 06/16/2018 ekoenig: news release
etaylor: Oceanus magazine, Vol. 53, No. 2, pg. 13
jdoucette: Image Of the Day, 06/16/2018
ekoenig: news release
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