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  Anaerobic digestion of the microalga Spirulina at extreme alkaline conditions: biogas production, metagenome, and metatranscriptome

Nolla-Ardèvol, V., Strous, M., & Tegetmeyer, H. E. (2015). Anaerobic digestion of the microalga Spirulina at extreme alkaline conditions: biogas production, metagenome, and metatranscriptome. Frontiers in Microbiology, 6: 567, pp. 1-21.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0001-C425-8 Versions-Permalink: https://hdl.handle.net/21.11116/0000-0001-C426-7
Genre: Zeitschriftenartikel

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Nolla-Ardèvol, Vímac, Autor
Strous, Marc1, Autor           
Tegetmeyer, Halina E.2, Autor           
Affiliations:
1Microbial Fitness Group, Max Planck Institute for Marine Microbiology, Max Planck Society, ou_2481708              
2HGF MPG Joint Research Group for Deep Sea Ecology & Technology, Max Planck Institute for Marine Microbiology, Max Planck Society, ou_2481702              

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 Zusammenfassung: A haloalkaline anaerobic microbial community obtained from soda lake sediments was used to inoculate anaerobic reactors for the production of methane rich biogas. The microalga Spirulina was successfully digested by the haloalkaline microbial consortium at alkaline conditions (pH 10, 2.0 M Na(+)). Continuous biogas production was observed and the obtained biogas was rich in methane, up to 96%. Alkaline medium acted as a CO2 scrubber which resulted in low amounts of CO2 and no traces of H2S in the produced biogas. A hydraulic retention time (HRT) of 15 days and 0.25 g Spirulina L(-1) day(-1) organic loading rate (OLR) were identified as the optimal operational parameters. Metagenomic and metatranscriptomic analysis showed that the hydrolysis of the supplied substrate was mainly carried out by Bacteroidetes of the "ML635J-40 aquatic group" while the hydrogenotrophic pathway was the main producer of methane in a methanogenic community dominated by Methanocalculus.

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Sprache(n): eng - English
 Datum: 2015-06-22
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Interne Begutachtung
 Identifikatoren: eDoc: 713970
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Titel: Frontiers in Microbiology
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 6 Artikelnummer: 567 Start- / Endseite: 1 - 21 Identifikator: -