Oil Spill Treatment Slowed the Clean-up
Chemical Dispersants likely slowed biodegradation of oil after Deepwater Horizon disaster
It was also thought that dissolving the slicks like this would increase the rate at which natural bacteria would bio-degrade the oil. But work by Dr. Samantha Joye, a microbiologist in the Department of Marine Sciences at the University of Georgia, and her colleagues, has shown that Corexit seems to inhibit, rather than facilitate, the ability of microbes to break down oil, leaving the toxic oil in the water for longer.
This throws into question a big part of the case for using chemical dispersant on oil spills.