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dc.contributor.authorDang, Nga Phuong
dc.contributor.authorPetrich, Chris
dc.contributor.authorO'Sadnick, Megan
dc.contributor.authorToske, Lisa
dc.date.accessioned2020-07-02T08:48:30Z
dc.date.available2020-07-02T08:48:30Z
dc.date.issued2020-01-01
dc.description.abstractThe 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<sup>−1</sup>. 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.en_US
dc.descriptionThis is an original manuscript / preprint of an article published by Taylor & Francis in <i>Environmental technology</i> on 01.01.20, available online: http://www.tandfonline.com/https://doi.org/10.1080/09593330.2019.1708976.
dc.identifier.citationDang NP, Petrich C, O'Sadnick M, Toske. Biotransformation of chemically dispersed diesel at sub-zero temperatures using artificial brines. Environmental technology. 2020en_US
dc.identifier.cristinIDFRIDAID 1818126
dc.identifier.doihttps://doi.org/10.1080/09593330.2019.1708976
dc.identifier.issn0959-3330
dc.identifier.issn1479-487X
dc.identifier.urihttps://hdl.handle.net/10037/18746
dc.language.isoengen_US
dc.publisherTaylor & Francisen_US
dc.relation.journalEnvironmental technology
dc.relation.projectIDRegionale forskningsfond Nord-Norge: 284681en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holder© 2020 Informa UK Limited, trading as Taylor & Francis Groupen_US
dc.subjectVDP::Teknologi: 500::Miljøteknologi: 610en_US
dc.subjectVDP::Technology: 500::Environmental engineering: 610en_US
dc.subjectBiodegradation / Biodegradationen_US
dc.subjectBiotransformation / Biotransformationen_US
dc.subjectDispersed diesel / Dispersed dieselen_US
dc.subjectSub zero temperature / Sub zero temperatureen_US
dc.titleBiotransformation of chemically dispersed diesel at sub-zero temperatures using artificial brinesen_US
dc.type.versionsubmittedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US


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