Modelling biodegradation of crude oil components at low temperatures
For oil spilled at sea, the main weathering processes are evaporation, emulsification, photo-oxidation, dispersion and biodegradation. Of these, only biodegradation may completely remove hydrocarbons from the environment in the long term, as the other processes only serve to transform and dilute the...
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Online Access: | https://hdl.handle.net/11250/2676811 https://doi.org/10.1016/j.chemosphere.2020.126836 |
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ftsintef:oai:sintef.brage.unit.no:11250/2676811 2023-05-15T15:06:07+02:00 Modelling biodegradation of crude oil components at low temperatures Nordam, Tor Lofthus, Synnøve Brakstad, Odd Gunnar 2020-09 application/pdf https://hdl.handle.net/11250/2676811 https://doi.org/10.1016/j.chemosphere.2020.126836 eng eng Norges forskningsråd: 255385 Chemosphere. 2020, 254 126836. urn:issn:0045-6535 https://hdl.handle.net/11250/2676811 https://doi.org/10.1016/j.chemosphere.2020.126836 cristin:1808751 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2020 The Authors. Published by Elsevier Ltd. CC-BY 126836 254 Chemosphere biodegradation Others 2020 ftsintef https://doi.org/10.1016/j.chemosphere.2020.126836 2021-08-04T11:59:42Z For oil spilled at sea, the main weathering processes are evaporation, emulsification, photo-oxidation, dispersion and biodegradation. Of these, only biodegradation may completely remove hydrocarbons from the environment in the long term, as the other processes only serve to transform and dilute the oil components. As petroleum development is moving north, the probability of Arctic oil spills increases. Hence, it is imperative to develop methods for comprehensive risk assessment of oil spills in cold and ice-covered waters. Accurate biodegradation rates are an essential part of this, as they are required to predict the long-term effects of marine oil spills. In this paper, we present experimentally determined biodegradation rates for the component groups which are used to represent oil in the OSCAR oil spill model. The experiments have been carried out at seawater temperatures of , , , and . We show that for the lighter and more soluble oil components, the changes in degradation rates between and are well captured by a constant scaling law. At lower temperatures, and for heavier and less soluble components, the rates are not well described by a constant , probably indicating that oil properties become important for the biodegradation rate. publishedVersion Other/Unknown Material Arctic ice covered waters SINTEF Open (Brage) Arctic Chemosphere 254 126836 |
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Open Polar |
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SINTEF Open (Brage) |
op_collection_id |
ftsintef |
language |
English |
topic |
biodegradation |
spellingShingle |
biodegradation Nordam, Tor Lofthus, Synnøve Brakstad, Odd Gunnar Modelling biodegradation of crude oil components at low temperatures |
topic_facet |
biodegradation |
description |
For oil spilled at sea, the main weathering processes are evaporation, emulsification, photo-oxidation, dispersion and biodegradation. Of these, only biodegradation may completely remove hydrocarbons from the environment in the long term, as the other processes only serve to transform and dilute the oil components. As petroleum development is moving north, the probability of Arctic oil spills increases. Hence, it is imperative to develop methods for comprehensive risk assessment of oil spills in cold and ice-covered waters. Accurate biodegradation rates are an essential part of this, as they are required to predict the long-term effects of marine oil spills. In this paper, we present experimentally determined biodegradation rates for the component groups which are used to represent oil in the OSCAR oil spill model. The experiments have been carried out at seawater temperatures of , , , and . We show that for the lighter and more soluble oil components, the changes in degradation rates between and are well captured by a constant scaling law. At lower temperatures, and for heavier and less soluble components, the rates are not well described by a constant , probably indicating that oil properties become important for the biodegradation rate. publishedVersion |
format |
Other/Unknown Material |
author |
Nordam, Tor Lofthus, Synnøve Brakstad, Odd Gunnar |
author_facet |
Nordam, Tor Lofthus, Synnøve Brakstad, Odd Gunnar |
author_sort |
Nordam, Tor |
title |
Modelling biodegradation of crude oil components at low temperatures |
title_short |
Modelling biodegradation of crude oil components at low temperatures |
title_full |
Modelling biodegradation of crude oil components at low temperatures |
title_fullStr |
Modelling biodegradation of crude oil components at low temperatures |
title_full_unstemmed |
Modelling biodegradation of crude oil components at low temperatures |
title_sort |
modelling biodegradation of crude oil components at low temperatures |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2676811 https://doi.org/10.1016/j.chemosphere.2020.126836 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic ice covered waters |
genre_facet |
Arctic ice covered waters |
op_source |
126836 254 Chemosphere |
op_relation |
Norges forskningsråd: 255385 Chemosphere. 2020, 254 126836. urn:issn:0045-6535 https://hdl.handle.net/11250/2676811 https://doi.org/10.1016/j.chemosphere.2020.126836 cristin:1808751 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2020 The Authors. Published by Elsevier Ltd. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.chemosphere.2020.126836 |
container_title |
Chemosphere |
container_volume |
254 |
container_start_page |
126836 |
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1766337774062927872 |