Cristin-resultat-ID: 1818126
Sist endret: 7. september 2020 21:11
NVI-rapporteringsår: 2020
Resultat
Vitenskapelig artikkel
2020

Biotransformation of chemically dispersed diesel at sub-zero temperatures using artificial brines

Bidragsytere:
  • Nga Phuong Dang
  • Chris Petrich
  • Megan O'Sadnick og
  • Lisa Toske

Tidsskrift

Environmental technology
ISSN 0959-3330
e-ISSN 1479-487X
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2020
Publisert online: 2020
Open Access

Importkilder

Scopus-ID: 2-s2.0-85078629097

Klassifisering

Vitenskapsdisipliner

Miljøteknologi

Emneord

Biotransformation • Biodegradation • Dispersed diesel • Sub zero temperature

Beskrivelse Beskrivelse

Tittel

Biotransformation of chemically dispersed diesel at sub-zero temperatures using artificial brines

Sammendrag

The biotransformation of hydrocarbon compounds in seawater at sub-zero temperature has gained research interest in recent years with the most focus placed on temperatures around 0°C. In this study, biotransformation of dispersed diesel at sub-zero temperatures (−2°C to −6°C) in artificial brines, prepared by adding Instant Ocean salt to natural seawater to increase salinity, is examined. The oil was pre-mixed with dispersant Finasol 51 to prepare the dispersed oil at 2 mg l−1. The native microorganisms in sub-arctic seawater were able to adapt to high salinity and lower temperature in the sea ice brine at tested temperatures and were capable of biotransforming hydrocarbon compounds. Complete depletion of low and middle-range molecular weight n-alkanes, 2/3 ring PAHs and their alkylated compounds was observed after 123 days at −2°C. The depletion extents of hydrocarbon compounds were reduced at −6°C in comparison with −2°C,especially for PAHs and alkylated hydrocarbons. This study suggests that: there is a potential for biodegradation of dispersed oil in sea ice brine at temperatures between −2°C and −6°C. However, for oil with high pour point, the biodegradation process will be more affected by low temperature. Therefore, to predict the fate of dispersed oil at low temperature, the biodegradation rate should be established for each individual oil type and at a specific temperature.

Bidragsytere

Nga Phuong Dang

  • Tilknyttet:
    Forfatter
    ved SINTEF Narvik

Christian Petrich

Bidragsyterens navn vises på dette resultatet som Chris Petrich
  • Tilknyttet:
    Forfatter
    ved SINTEF Narvik

Megan Eileen O'Sadnick

Bidragsyterens navn vises på dette resultatet som Megan O'Sadnick
  • Tilknyttet:
    Forfatter
    ved SINTEF Narvik

Lisa Toske

  • Tilknyttet:
    Forfatter
    ved Akvaplan Niva AS
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