Effectiveness of a chemical herder in association with in-situ burning of oil spills in ice-infested water

Laurens van Gelderen, Janne Fritt-Rasmussen, Grunde Jomaas

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Abstract

The average herded slick thickness, surface distribution and burning efficiency of a light crude oil were studied in ice-infested water to determine the effectiveness of a chemical herder in facilitating the in-situ burning of oil. Experiments were performed in a small scale (1.0m2) and an intermediate scale (19m2) setup with open water and 3/10, 5/10 and 7/10 brash ice coverages. The herded slick thicknesses (3-8mm) were ignitable in each experiment. The presence of ice caused fracturing of the oil during the herding process, which reduced the size of the herded slicks and, as a consequence, their ignitability, which in turn decreased the burning efficiency. Burning efficiencies relative to the ignited fraction of the oil were in the expected range (42-86%). This shows that the herder will be an effective tool for in-situ burning of oil when the ignitability issues due to fracturing of the oil are resolved.
Original languageEnglish
JournalMarine Pollution Bulletin
Volume115
Pages (from-to)345-351
ISSN0025-326X
DOIs
Publication statusPublished - 2017

Keywords

  • Chemical herder
  • Ice-infested water
  • In-situ burning
  • Oil spills

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