Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Parallel artificial and biological electric circuits power petroleum decontamination: The case of snorkel and cable bacteria |
| Abstract | Degradation of petroleum hydrocarbons (HC) in sediments is often limited by the availability of electron acceptors. By allowing long-distance electron transport (LDET) between anoxic sediments and oxic overlying water, bioelectrochemical snorkels may stimulate the regeneration of sulphate in the anoxic sediment thereby accelerating petroleum HC degradation. Cable bacteria can also mediate LDET between anoxic and oxic sediment layers and thus theoretically stimulate petroleum HC degradation. Here, we quantitatively assessed the impact of cable bacteria and snorkels on the degradation of alkanes in marine sediment from Aarhus Bay (Denmark). After seven weeks, cable bacteria and snorkels accelerated alkanes degradation by +24 and +25%, respectively, compared to control sediment with no cable bacteria nor snorkel. The combination of snorkels and cable bacteria further enhanced alkanes degradation (+46%). Higher degradation rates were sustained by LDET-induced sulphide removal rather than, as initially hypothesized, sulphate regeneration. Cable bacteria are thus overlooked players in the self-healing capacity of crude-oil contaminated sediments, and may inspire novel remediation treatments upon hydrocarbon spillage. |
| Source | Water research (Oxf.) 173, pp. 115520 |
| Keywords | Cable bacteriaHydrocarbonLong-distance electron transportRemediationSedimentSnorkel |
| Journal | Water research (Oxf.) |
| Editor | Pergamon Press., New York, Regno Unito |
| Year | 2020 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.watres.2020.115520 |
| Authors | Marzocchi, Ugo; Palma, Enza; Rossetti, Simona; Aulenta, Federico; Scoma, Alberto |
| Text | 420362 2020 10.1016/j.watres.2020.115520 Scopus 2 s2.0 85078679932 Cable bacteria Hydrocarbon Long distance electron transport Remediation Sediment Snorkel Parallel artificial and biological electric circuits power petroleum decontamination The case of snorkel and cable bacteria Marzocchi, Ugo; Palma, Enza; Rossetti, Simona; Aulenta, Federico; Scoma, Alberto Istituto di Ricerca sulle Acque, Italy; Aarhus Universitet; Istituto Nazionale Tumori IRCCS Fondazione G Pascale, Napoli Degradation of petroleum hydrocarbons HC in sediments is often limited by the availability of electron acceptors. By allowing long distance electron transport LDET between anoxic sediments and oxic overlying water, bioelectrochemical snorkels may stimulate the regeneration of sulphate in the anoxic sediment thereby accelerating petroleum HC degradation. Cable bacteria can also mediate LDET between anoxic and oxic sediment layers and thus theoretically stimulate petroleum HC degradation. Here, we quantitatively assessed the impact of cable bacteria and snorkels on the degradation of alkanes in marine sediment from Aarhus Bay Denmark . After seven weeks, cable bacteria and snorkels accelerated alkanes degradation by 24 and 25%, respectively, compared to control sediment with no cable bacteria nor snorkel. The combination of snorkels and cable bacteria further enhanced alkanes degradation 46% . Higher degradation rates were sustained by LDET induced sulphide removal rather than, as initially hypothesized, sulphate regeneration. Cable bacteria are thus overlooked players in the self healing capacity of crude oil contaminated sediments, and may inspire novel remediation treatments upon hydrocarbon spillage. 173 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85078679932 origin=inward Articolo in rivista Pergamon Press. 0043 1354 Water research Oxf. Water research Oxf. Water res. Oxf. Water research. Oxf. simona.rossetti ROSSETTI SIMONA federico.aulenta AULENTA FEDERICO |