Degradation of crude oil and PAHs in iron-manganese concretions and sediment from the northern Baltic Sea
| Autor: | Jouni Lehtoranta, Anna Reunamo, Jari Nuutinen, Pirjo Yli-Hemminki, Kirsten S. Jørgensen |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Abiotic component Brackish water 030106 microbiology ta1183 ta1171 Sediment Contamination Biodegradation Microbiology Anoxic waters 03 medical and health sciences chemistry.chemical_compound Mining engineering chemistry Environmental chemistry Earth and Planetary Sciences (miscellaneous) Environmental Chemistry Petroleum Microcosm Geology General Environmental Science |
| Zdroj: | Geomicrobiology Journal. 34(5):385-399 |
| ISSN: | 0149-0451 |
| Popis: | The ability of different sea bottom types to recover from oil contamination under oxic and anoxic conditions is poorly known in the brackish Baltic Sea. We carried out microcosm experiments to examine the capacity of iron–manganese concretions and sediment to remove petroleum compounds at 10°C. The biological degradation potential of polycyclic aromatic hydrocarbons (PAHs) was indicated by the 1000-fold increase in the copy numbers of PAH-degradation genes resulting in 2.2 × 106 gene copies g−1 DW. In the experiments 35−81% of the crude oil and 96% of PAHs disappeared through abiotic and biotic pathways, and there was little difference between the concretions and sediment. Bacterial community analysis revealed that the bacterial sequences obtained from the oil-treated concretions were affiliated to groups typical for concretions and metal-rich environments, whereas oil-treated sediment sequences were similar to those originating from sediments and oil-contaminated environments. The high frequency ... |
| Databáze: | OpenAIRE |
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