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RECORD NUMBER: 48 OF 241

OLS Field Name OLS Field Data
Main Title Dispersion of crude oil and petroleum products in freshwater [electronic resource] /
Author Wrenn, Brian A. ; B. A. Wrenn
Other Authors
Author Title of a Work
Venosa, Albert D.
Wrenn, Brian A.
CORP Author Washington Univ., St. Louis, MO.; National Risk Management Research Lab., Cincinnati, OH.
Publisher National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 2008
Report Number EPA/600/R-08/037
Stock Number PB2008-108995
Subjects Oil spills--Management. ; Oil pollution of water. ; Dispersing agents. ; Oil pollution of rivers, harbors, etc.
Additional Subjects Oil spills ; Crude oil ; Dispersants ; Petroleum ; Fresh water ; Effectiveness ; Weathering ; Surfactants ; Dispersions ; Oil pollution
Internet Access
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=P10016VR.PDF
http://www.epa.gov/nrmrl/publications.html
http://purl.access.gpo.gov/GPO/LPS116368
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB2008-108995 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 10/16/2009
Collation 1 online resource (iv, 29 p.) : ill. (some col.)
Abstract
The objective of this research was to investigate the relationship between dispersion effectiveness in freshwater and the surfactant composition for fresh and weathered crude oil. Although limited research on the chemical dispersion of crude oil and petroleum products in freshwater has been conducted, previous studies did not identify the dispersants that were investigated, much less describe the chemistry of the surfactants that were used. The absence of information on surfactant composition is a major impediment to the scientific investigation of dispersant effectiveness because this information is necessary for the development of a more fundamental understanding of dispersant effectiveness. Therefore, the relationship between surfactant chemistry and dispersant effectiveness was systematically evaluated. This report showed that, at least with Mars Blend crude oil in simulated lake water, dispersants can be designed to drive an oil slick into the freshwater column with the same efficiency as in saltwater as long as the hydrophilic-lipophilic balance (HLB) is optimum. Clearly, many more oils would need to be tested under different conditions (temperature, organic content, water composition, etc.) to enable firm conclusions that oil can be dispersed in freshwater as a response tool. The ultimate decision to use dispersants in treating freshwater petroleum oil spills is up to the federal on-scene coordinator, the incident command team, the regional response teams, and EPA Headquarters, since many other factors need to be considered before rendering a decision to disperse oil into the water column. It is beyond the scope of this report to consider such factors. Its purpose was simply to determine if freshwater dispersion is possible and to determine whether effective freshwater dispersants can be designed to produce stable oil droplet distributions in such an environment.
Notes
Title from title screen (viewed Jan. 2, 2009). "March 2008." "EPA/600/R-08/037." "The U.S. Environmental Protection Agency through its Office of Research and Development funded the research under order number EP06C000259 to Brian A. Wrenn at the Washington University Department of Energy, Envrionmental, and Chemical Engineering."--P. ii.
Contents Notes
The objective of this research was to investigate the relationship between dispersion effectiveness in freshwater and the surfactant composition for fresh and weathered crude oil. Although limited research on the chemical dispersion of crude oil and petroleum products in freshwater has been conducted, previous studies did not identify the dispersants that were investigated, much less describe the chemistry of the surfactants that were used. The absence of information on surfactant composition is a major impediment to the scientific investigation of dispersant effectiveness because this information is necessary for the development of a more fundamental understanding of dispersant effectiveness. Therefore, the relationship between surfactant chemistry and dispersant effectiveness was systematically evaluated. This report showed that, at least with Mars Blend crude oil in simulated lake water, dispersants can be designed to drive an oil slick into the freshwater column with the same efficiency as in saltwater as long as the hydrophilic-lipophilic balance (HLB) is optimum. Clearly, many more oils would need to be tested under different conditions (temperature, organic content, water composition, etc.) to enable firm conclusions that oil can be dispersed in freshwater as a response tool. The ultimate decision to use dispersants in treating freshwater petroleum oil spills is up to the federal on-scene coordinator, the incident command team, the regional response teams, and EPA Headquarters, since many other factors need to be considered before rendering a decision to disperse oil into the water column. It is beyond the scope of this report to consider such factors. Its purpose was simply to determine if freshwater dispersion is possible and to determine whether effective freshwater dispersants can be designed to produce stable oil droplet distributions in such an environment