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Dark Fermentation of Arundo donax: Characterization of the Anaerobic Microbial Consortium

Author

Listed:
  • Giuseppe Toscano

    (Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale (DICMaPI), Università degli Studi di Napoli Federico II, 80125 Napoli, Italy)

  • Gaetano Zuccaro

    (Nereus SAS, 34230 Le Pouget, France)

  • Anna Corsini

    (Dipartimento di Scienze per gli Alimenti, la Nutrizione e l’Ambiente (DeFENS), Università degli Studi di Milano, 20133 Milano, Italy)

  • Sarah Zecchin

    (Dipartimento di Scienze per gli Alimenti, la Nutrizione e l’Ambiente (DeFENS), Università degli Studi di Milano, 20133 Milano, Italy)

  • Lucia Cavalca

    (Dipartimento di Scienze per gli Alimenti, la Nutrizione e l’Ambiente (DeFENS), Università degli Studi di Milano, 20133 Milano, Italy)

Abstract

The dark fermentation of lignocellulose hydrolysates is a promising process for the production of hydrogen from renewable sources. Nevertheless, hydrogen yields are often lower than those obtained from other carbohydrate sources due to the presence of microbial growth inhibitors in lignocellulose hydrolysates. In this study, a microbial consortium for the production of hydrogen by dark fermentation has been obtained from a wild methanogenic sludge by means of thermal treatments. The consortium has been initially acclimated to a glucose-based medium and then used as inoculum for the fermentation of Arundo donax hydrolysates. Hydrogen yields obtained from fermentation of A. donax hydrolysates were lower than those obtained from glucose fermentation using the same inoculum (0.30 ± 0.05 versus 1.11 ± 0.06 mol of H 2 per mol of glucose equivalents). The hydrogen-producing bacteria belonged mainly to the Enterobacteriaceae family in cultures growing on glucose and to Clostridium in those growing on A. donax hydrolysate. In the latter cultures, Lactobacillus outcompeted Enterobacteriaceae , although Clostridium also increased. Lactobacillus outgrowth could account for the lower yields observed in cultures growing on A. donax hydrolysate.

Suggested Citation

  • Giuseppe Toscano & Gaetano Zuccaro & Anna Corsini & Sarah Zecchin & Lucia Cavalca, 2023. "Dark Fermentation of Arundo donax: Characterization of the Anaerobic Microbial Consortium," Energies, MDPI, vol. 16(4), pages 1-16, February.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:4:p:1813-:d:1065634
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    References listed on IDEAS

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    1. Ciro Vasmara & Stefano Cianchetta & Rosa Marchetti & Enrico Ceotto & Stefania Galletti, 2022. "Hydrogen Production from Enzymatic Hydrolysates of Alkali Pre-Treated Giant Reed ( Arundo donax L.)," Energies, MDPI, vol. 15(13), pages 1-17, July.
    2. Ciro Vasmara & Stefania Galletti & Stefano Cianchetta & Enrico Ceotto, 2023. "Advancements in Giant Reed ( Arundo donax L.) Biomass Pre-Treatments for Biogas Production: A Review," Energies, MDPI, vol. 16(2), pages 1-21, January.
    3. Leandro Gomes & Jorge Costa & Joana Moreira & Berta Cumbane & Marcelo Abias & Fernando Santos & Federica Zanetti & Andrea Monti & Ana Luisa Fernando, 2022. "Switchgrass and Giant Reed Energy Potential when Cultivated in Heavy Metals Contaminated Soils," Energies, MDPI, vol. 15(15), pages 1-28, July.
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