Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Accelerated methanogenesis from aliphatic and aromatic hydrocarbons under iron- and sulfate-reducing conditions
Siegert, M.; Cichocka, D.; Herrmann, S.; Gründger, F.; Feisthauer, S.; Richnow, H.-H.; Springael, D.; Krüger, M. (2011). Accelerated methanogenesis from aliphatic and aromatic hydrocarbons under iron- and sulfate-reducing conditions. FEMS Microbiol. Lett. 315(1): 6-16. https://dx.doi.org/10.1111/j.1574-6968.2010.02165.x
In: FEMS. Microbiology letters. Elsevier/North-Holland: Amsterdam. ISSN 0378-1097; e-ISSN 1574-6968, meer
|   |
| Trefwoorden |
Geobacter Lovley, Giovannoni, White, Champine, Phillips, Gorby & Goodwin, 1995 [WoRMS]
Marien/Kust |
| Author keywords |
methanogenic hydrocarbon degradation; microbially enhanced oil recovery;metal reduction; bioremediation; Geobacter; anaerobic oxidation ofmethane |
| Auteurs | | Top |
- Siegert, M.
- Cichocka, D., meer
- Herrmann, S., meer
- Gründger, F.
|
- Feisthauer, S.
- Richnow, H.-H.
- Springael, D., meer
- Krüger, M., meer
|
|
| Abstract |
The impact of four electron acceptors on hydrocarbon-induced methanogenesis was studied. Methanogenesis from residual hydrocarbons may enhance the exploitation of oil reservoirs and may improve bioremediation. The conditions to drive the rate-limiting first hydrocarbon-oxidizing steps for the conversion of hydrocarbons into methanogenic substrates are crucial. Thus, the electron acceptors ferrihydrite, manganese dioxide, nitrate or sulfate were added to sediment microcosms acquired from two brackish water locations. Hexadecane, ethylbenzene or 1-13C-naphthalene were used as model hydrocarbons. Methane was released most rapidly from incubations amended with ferrihydrite and hexadecane. Ferrihydrite enhanced only hexadecane-dependent methanogensis. The rates of methanogenesis were negatively affected by sulfate and nitrate at concentrations of more than 5 and 1 mM, respectively. Metal-reducing Geobacteraceae and potential sulfate reducers as well as Methanosarcina were present in situ and in vitro. Ferrihydrite addition triggered the growth of Methanosarcina-related methanogens. Additionally, methane was removed concomitantly by anaerobic methanotrophy. ANME-1 and -2 methyl coenzyme M reductase genes were detected, indicating anaerobic methanotrophy as an accompanying process [Correction added 16 December after online publication: ‘methyl coenzyme A’ changed to ‘methyl coenzyme M’ in this sentence]. The experiments presented here demonstrate the feasibility of enhancing methanogenic alkane degradation by ferrihydrite or sulfate addition in different geological settings. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
