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Emulating deep-sea bioremediation: oil plume degradation by undisturbed deep-sea microbial communities using a high-pressure sampling and experimentation system

Antoniou Eleftheria, Fragkou Efsevia, Charalampous Georgia, Marinakis Dimitrios, Kalogerakis Nikos, Gontikaki Evangelia

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URIhttp://purl.tuc.gr/dl/dias/5E2A07C8-2CED-46B0-A29D-41F6FBEC12C8-
Identifierhttps://doi.org/10.3390/en15134525-
Identifierhttps://www.mdpi.com/1996-1073/15/13/4525-
Languageen-
Extent16 pagesen
TitleEmulating deep-sea bioremediation: oil plume degradation by undisturbed deep-sea microbial communities using a high-pressure sampling and experimentation systemen
CreatorAntoniou Eleftheriaen
CreatorΑντωνιου Ελευθεριαel
CreatorFragkou Efseviaen
CreatorΦραγκου Ευσεβιαel
CreatorCharalampous Georgiaen
CreatorΧαραλαμπους Γεωργιαel
CreatorMarinakis Dimitriosen
CreatorΜαρινακης Δημητριοςel
CreatorKalogerakis Nikosen
CreatorΚαλογερακης Νικοςel
CreatorGontikaki Evangeliaen
CreatorΓοντικακη Ευαγγελιαel
PublisherMDPIen
Content SummaryHydrocarbon biodegradation rates in the deep-sea have been largely determined under atmospheric pressure, which may lead to non-representative results. In this work, we aim to study the response of deep-sea microbial communities of the Eastern Mediterranean Sea (EMS) to oil contamination at in situ environmental conditions and provide representative biodegradation rates. Seawater from a 600 to 1000 m depth was collected using a high-pressure (HP) sampling device equipped with a unidirectional check-valve, without depressurization upon retrieval. The sample was then passed into a HP-reactor via a piston pump without pressure disruption and used for a time-series oil biodegradation experiment at plume concentrations, with and without dispersant application, at 10 MPa and 14 °C. The experimental results demonstrated a high capacity of indigenous microbial communities in the deep EMS for alkane degradation regardless of dispersant application (>70%), while PAHs were highly degraded when oil was dispersed (>90%) and presented very low half-lives (19.4 to 2.2 days), compared to published data. To our knowledge, this is the first emulation study of deep-sea bioremediation using undisturbed deep-sea microbial communities.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2023-08-25-
Date of Publication2022-
SubjectOil plume degradationen
SubjectDispersant applicationen
SubjectMarine microbesen
SubjectDeep-seaen
SubjectBioremediationen
SubjectHigh-pressure sampleren
SubjectHigh-pressure reactoren
Bibliographic CitationE. Antoniou, E. Fragkou, G. Charalampous, D. Marinakis, N. Kalogerakis, and E. Gontikaki, “Emulating deep-sea bioremediation: oil plume degradation by undisturbed deep-sea microbial communities using a high-pressure sampling and experimentation system,” Energies, vol. 15, no. 13, Jun. 2022, doi: 10.3390/en15134525.en

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