期刊
MARINE POLLUTION BULLETIN
卷 60, 期 2, 页码 244-254出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2009.09.019
关键词
Oil spill; Dispersant; Leaching; Effectiveness; Calm water; Large-scale testing
资金
- US Minerals Management Service Engineering and Research Branch
The use of dispersants to treat oil spills in calm seas is discouraged because there is insufficient 'mixing energy' to cause immediate dispersion of the oil. However, dispersants might be applied while the seas are calm, in the expectation that they would work later when sea states increase. The present study examined the persistence of dispersants in treated oil slicks on calm water in a large outdoor wave tank. Test slicks, pre-mixed with dispersant, were allowed to stand on static and flowing water for up to six days, after which their dispersibility was tested by exposing them to breaking waves. Results showed that thicker slicks exposed to calm water for up to six days dispersed completely with the addition of breaking waves. Thinner slicks and slicks exposed to water movement became less dispersible within two days. The loss of dispersibility was caused by dispersant loss rather than by oil weathering. (C) 2009 Elsevier Ltd. All rights reserved.
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