Stability of mechanically and chemically dispersed oil: Effect of particle types on oil dispersion SCIE SCOPUS

Cited 4 time in WEB OF SCIENCE Cited 5 time in Scopus
Title
Stability of mechanically and chemically dispersed oil: Effect of particle types on oil dispersion
Author(s)
Loh, Andrew; Ravi, Shankar; Ha, Sung Yong; An, Joon Geon; Yim, Un Hyuk
KIOST Author(s)
Loh, Andrew(Loh, Andrew)Ha, Sung Yong(하성용)An, Joon Geon(안준건)Yim, Un Hyuk(임운혁)
Publication Year
2020-05
Abstract
Oil spill dispersant (OSD) application is one of the preferred cleanup options to cope with oil spills at sea. OSD, in principle, can enhance biodegradation of oil because of its effectiveness in producing relatively small droplets and dispersing them into the water column. Under turbulent conditions, suspended particulate matter (SPM) which are present naturally in the environment can interact with oil to form aggregates known as oil-SPM aggregates (OSA) which also enhances biodegradation of oil. Despite its high dispersion effectiveness, chemically dispersed oil (CDO) has a tendency to resurface with increasing time which decreases the biodegradation potential. Meanwhile, the presence of SPM prevents recoalescence of dispersed oil which can enhance stability of oil droplets. This study focused on the effects of SPM on the dispersion effectiveness and stability of mechanically dispersed oil (MDO) and CDO. Dispersion tests of MDO and CDO extended to 72 h with and without SPM to see the initial effectiveness and the prolonged stability of dispersed oil. In the presence of SPM, the oil dispersed by MDO increased by 14.8–40.7%, while the resurfacing oil by CDO decreased by 8.7–19.4%. Regardless of SPM type, oil dispersion effectiveness and stability of MDO and CDO were significantly increased. Long-term stability test for 3 months showed that stability of OSA increased as the particle size decreased and particle counts increased. © 2019 Elsevier B.V.
ISSN
0048-9697
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/38682
DOI
10.1016/j.scitotenv.2019.135343
Bibliographic Citation
Science of the Total Environment, 2020
Publisher
Elsevier B.V.
Keywords
Dispersion effectiveness; Mechanical dispersion; Oil spill dispersant; Stability; Suspended particulate matter
Type
Article
Language
English
Document Type
Article
Publisher
Elsevier B.V.
Related Researcher
Research Interests

Oil Spill Environmental Forensics,Persistent Organic Pollutants,Marine Aerosol,유류오염 환경법과학,지속성유기오염물질,해양 에어로졸

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