Record Display for the EPA National Library Catalog
RECORD NUMBER: 31 OF 36
|OLS Field Name||OLS Field Data|
|Main Title||Techniques for mixing dispersants with spilled oil /|
|Author||Smith, Gary F.|
|CORP Author||Mason and Hanger-Silas Mason Co., Inc. Leonardo, N.J. Industrial Environmental Research Lab., Cincinnati, Ohio.|
|Publisher||Environmental Protection Agency, Office of Research and Development, Industrial Environmental Research Laboratory ; For sale by the National Technical Information Service,|
|Report Number||EPA/600/2-78/128; EPA-68-03-0490|
|Stock Number||PB-285 679|
|Additional Subjects||Water pollution control ; Dispersants ; Mixing ; Marine biology ; Mixtures ; Performance evaluation ; Equipment ; Surfactants ; Oil pollution removal ; Oil spills ; Procedures|
|Collation||ix, 38 pages : illustrations ; 28 cm.|
The effective use of some oil spill dispersants requires the addition of mixing energy to the dispersant-treated slick. Various methods of energy application have included the use of fire hose streams directed to the water surface, outboard motors mounted on work boats, and the five-bar gate, a pallet-like device towed on the surface behind vessels of opportunity. The U.S. Environmental Protection Agency sponsored this test program at their Oil & Hazardous Materials Simulated Environmental Test Tank (OHMSETT) to evaluate the above devices as well as a modified version of the five-bar gate. Three test fluid mixtures with different interfacial tensions were distributed onto the water surface, and each mixing device was towed through them at speeds from 1.02 m/s to 2.54 m/s in three wave conditions. Droplet penetration was documented via underwater photography. Analysis of the results showed that the modified five-bar gate produced the greatest overall penetration (2.4 m) at a tow speed of 2/0m/s. In general, performance was unaffected by wave action, and variations in interfacial tension produced no observable trend among all devices.
Contract no. 68-03-0490. Issued June 1978. Includes bibliographical references (page 17). Microfiche.