1
|
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 OK, Head IM, Malmquist L, Christensen JH, Kalogerakis N, Aulenta F. Combining electrokinetic transport and bioremediation for enhanced removal of crude oil from contaminated marine sediments: Results of a long-term, mesocosm-scale experiment. Water Res 2019; 157:381-395. [PMID: 30974287 DOI: 10.1016/j.watres.2019.03.094] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 03/27/2019] [Accepted: 03/30/2019] [Indexed: 05/23/2023]
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/m2. 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 (nC6 to nC10) via biodegradation.
Collapse
Affiliation(s)
- S Cappello
- Institute for Coastal Marine Environment (IAMC), National Research Council (CNR), Messina, Italy
| | - C Cruz Viggi
- Water Research Institute (IRSA), National Research Council (CNR), Monterotondo, RM, Italy
| | - M Yakimov
- Institute for Coastal Marine Environment (IAMC), National Research Council (CNR), Messina, Italy
| | - S Rossetti
- Water Research Institute (IRSA), National Research Council (CNR), Monterotondo, RM, Italy
| | - B Matturro
- Water Research Institute (IRSA), National Research Council (CNR), Monterotondo, RM, Italy
| | - L Molina
- Environmental Protection Department, Estación Experimental Del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - A Segura
- Environmental Protection Department, Estación Experimental Del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - S Marqués
- Environmental Protection Department, Estación Experimental Del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain
| | - L Yuste
- Departamento de Biotecnología Microbiana, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - E Sevilla
- Departamento de Biotecnología Microbiana, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - F Rojo
- Departamento de Biotecnología Microbiana, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - A Sherry
- School of Civil Engineering and Geosciences, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - O K Mejeha
- School of Civil Engineering and Geosciences, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - I M Head
- School of Civil Engineering and Geosciences, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - L Malmquist
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
| | - J H Christensen
- Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
| | - N Kalogerakis
- School of Environmental Engineering, Technical University of Crete, Chania, Greece
| | - F Aulenta
- Water Research Institute (IRSA), National Research Council (CNR), Monterotondo, RM, Italy.
| |
Collapse
|