Fate of residual oils during remediation activities after the Wu Yi San oil spill
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Title
- Fate of residual oils during remediation activities after the Wu Yi San oil spill
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Author(s)
- Loh, Andrew; Yim, Un Hyuk; Ha, Sung Yong; An, Joon Geon; Shankar, Ravi
- KIOST Author(s)
- Loh, Andrew(Loh, Andrew); Yim, Un Hyuk(임운혁); Ha, Sung Yong(하성용); An, Joon Geon(안준건)
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Alternative Author(s)
- Andrew; 임운혁; 하성용; 안준건; RAVI
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Publication Year
- 2019-01
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Abstract
- In this study, the fate of residual oils was investigated during remediation activities for a year after the Wu Yi San oil spill. Microscope observations showed that relatively large amounts of oil-suspended particulate matter aggregate (OSA) were formed. Negatively buoyant OSA was the dominant form (> 95%), followed by neutrally (similar to 5%) and positively buoyant (< 1%) forms. To elucidate the dominance of negative buoyancy OSA, physicochemical properties of the mineral and residual oils were identified. Chemical analysis showed that the weathering percentage of residual oils was 43.7 +/- 2.59%, which was the driving factor for sedimentation of OSA. As the density of oil increased with weathering stages, the density of OSA also increased simultaneously. These results showed that, during mechanical remediation activities, resurfaced residual oils can form negative buoyancy OSA which tends to sink and transfers oil contaminants from intertidal to benthic environments.
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ISSN
- 0025-326X
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/709
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DOI
- 10.1016/j.marpolbul.2018.11.059
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Bibliographic Citation
- MARINE POLLUTION BULLETIN, v.138, pp.328 - 332, 2019
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Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
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Subject
- SUSPENDED PARTICULATE MATTER; POLYCYCLIC AROMATIC-HYDROCARBONS; CRUDE-OIL; SEDIMENT
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Keywords
- OSA; Residual oil; Weathering; Sedimentation; Wu Yi San oil spill
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Type
- Article
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Language
- English
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Document Type
- Article
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