| Title | Combining electrokinetic transport and bioremediation for enhanced removal of crude oil from contaminated marine sediments: Results of a long-term, mesocosm-scale experiment |
| Abstract | Marine sediments represent an important sink of harmful petroleum hydrocarbons after an accidental oil spill. Electrobioremediation techniques, which combine electrokinetic transport and biodegradation processes, represent an emerging technological platform for a sustainable remediation of contaminated sediments. Here, we describe the results of a long-term mesocosm-scale electrobioremediation experiment for the treatment of marine sediments contaminated by crude oil. A dimensionally stable anode and a stainless-steel mesh cathode were employed to drive seawater electrolysis at a fixed current density of 11 A/m. This approach allowed establishing conditions conducive to contaminants biodegradation, as confirmed by the enrichment of Alcanivorax borkumensis cells harboring the alkB-gene and other aerobic hydrocarbonoclastic bacteria. Oil chemistry analyses indicated that aromatic hydrocarbons were primarily removed from the sediment via electroosmosis and low molecular weight alkanes (nC to nC) via biodegradation. |
| Source | Water research (Oxf.) 157, pp. 381–395 |
| Keywords | Crude oilElectrobioremediationElectrokinetic remediationMarine sediments |
| Journal | Water research (Oxf.) |
| Editor | Pergamon Press., New York, Regno Unito |
| Year | 2019 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.watres.2019.03.094 |
| Authors | Cappello, S.; Cruz Viggi, C.; Yakimov, M.; Rossetti, S.; Matturro, B.; Molina, L.; Segura, A.; Marqués, S.; Yuste, L.; Sevilla, E.; Rojo, F.; Sherry, A.; Mejeha, O. K.; Head, I. M.; Malmquist, L.; Christensen, J. H.; Kalogerakis, N.; Aulenta, F. |
| Text | 407385 2019 10.1016/j.watres.2019.03.094 Scopus 2 s2.0 85063791010 ISI Web of Science WOS WOS 000468253500038 Crude oil Electrobioremediation Electrokinetic remediation Marine sediments Combining electrokinetic transport and bioremediation for enhanced removal of crude oil from contaminated marine sediments Results of a long term, mesocosm scale experiment Cappello, S.; Cruz Viggi, C.; Yakimov, M.; Rossetti, S.; Matturro, B.; Molina, L.; Segura, A.; Marques, S.; Yuste, L.; Sevilla, E.; Rojo, F.; Sherry, A.; Mejeha, O. K.; Head, I. M.; Malmquist, L.; Christensen, J. H.; Kalogerakis, N.; Aulenta, F. Istituto per l Ambiente Marino Costiero del Consiglio Nazionale delle Ricerche IAMC CNR ; Istituto di Ricerca sulle Acque, Italy; Københavns Universitet; Technical University of Crete; CSIC Centro Nacional de Biotecnologia CNB ; CSIC Estacion Experimental del Zaidin EEZ ; Newcastle University, United Kingdom Marine sediments represent an important sink of harmful petroleum hydrocarbons after an accidental oil spill. Electrobioremediation techniques, which combine electrokinetic transport and biodegradation processes, represent an emerging technological platform for a sustainable remediation of contaminated sediments. Here, we describe the results of a long term mesocosm scale electrobioremediation experiment for the treatment of marine sediments contaminated by crude oil. A dimensionally stable anode and a stainless steel mesh cathode were employed to drive seawater electrolysis at a fixed current density of 11 A/m. This approach allowed establishing conditions conducive to contaminants biodegradation, as confirmed by the enrichment of Alcanivorax borkumensis cells harboring the alkB gene and other aerobic hydrocarbonoclastic bacteria. Oil chemistry analyses indicated that aromatic hydrocarbons were primarily removed from the sediment via electroosmosis and low molecular weight alkanes nC to nC via biodegradation. 157 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85063791010 origin=inward Combining electrokinetic transport and bioremediation for enhanced removal of crude oil from contaminated marine sediments... paper Combining electrokinetic transport and bioremediation for enhanced removal of crude oil from contaminated marine sediments Results of a long term, mesocosm scale experiment.pdf Articolo in rivista Pergamon Press. 0043 1354 Water research Oxf. Water research Oxf. Water res. Oxf. Water research. Oxf. simona.rossetti ROSSETTI SIMONA mikhail.iakimov IAKIMOV MIKHAIL simone.cappello CAPPELLO SIMONE federico.aulenta AULENTA FEDERICO bruna.matturro MATTURRO BRUNA carolina.cruzviggi CRUZ VIGGI CAROLINA |
