In-situ comparison of bioremediation methods for a number 6 residual fuel oil spill in lee county, Florida Conference

cited authors

  • Jones, MA; Greenfield, JH

fiu authors


  • On July 5, 1988, as a result of overfilling, about 3,200 barrels of No. 6 fuel was spilled onto surface soils surrounding Florida Power and Light Company storage tank, and spread over about 60,000 square feet of soil. About 2,300 barrels were recovered, leaving 900 barrels in the upper six to eight inches of the soil. The spill was chosen as the site for a trial of in-situ enhanced bioremediation. An initial feasibility study in the laboratory was followed by groundwater monitoring, field remediaiton, and a small-plot research program. In the feasibility study, lower concentrations of nutrients applied periodically were almost as effective as a single application using a larger concentration. The small-plot study indicated that treatment with added bacteria and nutrients offered the greatest reduction in hydrocarbons. Addition of bacteria alone provided no advantage. In the field remediation program, two- and three-ring compounds were completely degraded, while four-, five-, and six-ring compounds were more resistant. The research demonstrated that in-situ enhanced bioremediation can be a cost-effective method for treating soils contaminated with No. 6 fuel oil.

publication date

  • December 1, 2005

start page

  • 3973