Effects of temperature and wave conditions on chemical dispersion efficacy of heavy fuel oil in an experimental flow-through wave tank

Zhengkai Li, Kenneth Lee, Thomas King, Michel C. Boufadel, Albert D. Venosa

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

The effectiveness of chemical dispersants (Corexit 9500 and SPC 1000) on heavy fuel oil (IFO180 as test oil) has been evaluated under different wave conditions in a flow-through wave tank. The dispersant effectiveness was determined by measuring oil concentrations and droplet size distributions. An analysis of covariance (ANCOVA) model indicated that wave type and temperature significantly (p<0.05) affected the dynamic dispersant effectiveness (DDE). At higher temperatures (16°C), the test IFO180 was effectively dispersed under breaking waves with a DDE of 90% and 50% for Corexit 9500 and SPC 1000, respectively. The dispersion was ineffective under breaking waves at lower temperature (10°C), and under regular wave conditions at all temperatures (10-17°C), with DDE<15%. Effective chemical dispersion was associated with formation of smaller droplets (with volumetric mean diameters or VMD ≤ 200 μm), whereas ineffective dispersion produced large oil droplets (with VMD ≥ 400 μm).

Original languageEnglish (US)
Pages (from-to)1550-1559
Number of pages10
JournalMarine Pollution Bulletin
Volume60
Issue number9
DOIs
StatePublished - Sep 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Aquatic Science
  • Pollution

Keywords

  • Chemical dispersion
  • Droplet size distribution
  • Dynamic dispersant effectiveness
  • Heavy fuel oil
  • Temperature effect
  • Wave effect

Fingerprint

Dive into the research topics of 'Effects of temperature and wave conditions on chemical dispersion efficacy of heavy fuel oil in an experimental flow-through wave tank'. Together they form a unique fingerprint.

Cite this