Emulating deep-sea bioremediation: oil plume degradation by undisturbed deep-sea microbial communities using a high-pressure sampling and experimentation system
Το έργο με τίτλο Emulating deep-sea bioremediation: oil plume degradation by undisturbed deep-sea microbial communities using a high-pressure sampling and experimentation system από τον/τους δημιουργό/ούς Antoniou Eleftheria, Fragkou Efsevia, Charalampous Georgia, Marinakis Dimitrios, Kalogerakis Nikos, Gontikaki Evangelia διατίθεται με την άδεια Creative Commons Αναφορά Δημιουργού 4.0 Διεθνές
Βιβλιογραφική Αναφορά
E. 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.
https://doi.org/10.3390/en15134525
Hydrocarbon 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.