Combining electrokinetic transport and bioremediation for enhanced removal of crude oil from contaminated marine sediments: Results of a long-term, mesocosm-scale experiment

被引：36

作者：

Cappello, S. ^{[1
]}

Viggi, C. Cruz ^{[2
]}

Yakimov, M. ^{[1
]}

Rossetti, S. ^{[2
]}

Matturro, B. ^{[2
]}

Molina, L. ^{[3
]}

Segura, A. ^{[3
]}

Marques, S. ^{[3
]}

Yuste, L. ^{[4
]}

Sevilla, E. ^{[4
]}

Rojo, F. ^{[4
]}

Sherry, A. ^{[5
]}

Mejeha, O. K. ^{[5
]}

Head, I. M. ^{[5
]}

Malmquist, L. ^{[6
]}

Christensen, J. H. ^{[6
]}

Kalogerakis, N. ^{[7
]}

Aulenta, F. ^{[2
]}

机构：

[1] Natl Res Council CNR, Inst Coastal Marine Environm IAMC, Messina, Italy

[2] Natl Res Council CNR, Water Res Inst IRSA, Monterotondo, RM, Italy

[3] CSIC, Environm Protect Dept, Estn Expt Zaidin, Granada, Spain

[4] CSIC, Dept Biotecnol Microbiana, Ctr Nacl Biotecnol, Madrid, Spain

[5] Newcastle Univ, Sch Civil Engn & Geosci, Newcastle Upon Tyne, Tyne & Wear, England

[6] Univ Copenhagen, Dept Plant & Environm Sci, Copenhagen, Denmark

[7] Tech Univ Crete, Sch Environm Engn, Khania, Greece

来源：

WATER RESEARCH | 2019年 / 157卷

关键词：

Crude oil; Electrobioremediation; Electrokinetic remediation; Marine sediments; SULFATE-REDUCING BACTERIA; POLYCYCLIC AROMATIC-HYDROCARBONS; 16S RIBOSOMAL-RNA; PETROLEUM-HYDROCARBONS; BIODEGRADATION; DEGRADATION; REMEDIATION; WATER; DIVERSITY; ELECTRODE;

D O I：

10.1016/j.watres.2019.03.094

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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(2). 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(6) to nC(10)) via biodegradation. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：381 / 395

页数：15

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