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Formation of hydrogen-producing granules and microbial community analysis in a UASB reactor

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  • Ning, Yan-Yan
  • Wang, Shao-Feng
  • Jin, Da-Wei
  • Harada, Hideki
  • Shi, Xian-Yang

Abstract

The effect of substrate concentration on continuous H2 production from a sucrose-rich synthetic wastewater was investigated in this work. The maximum H2 production rate of 2.89 m3 H2/m3/d achieved at 7000 mg COD/L while the peak ethanol concentration of 2840 mg/L was observed at 5000 mg COD/L. The H2-producing granules with ethanol-type fermentation were successfully cultivated in an upflow anaerobic sludge blanket (UASB) reactor. Denaturing gradient gel electrophoresis analysis demonstrates that the substrate concentration had a considerable effect on the microbial community. After the mature H2-producing granules were formed, the microbial community structure in the UASB reactor tends to stabilize. The dominant bacterium in the mature H2-producing granules were composed of Janthinobacterium sp. WPCB148, Clostridium sp. HPB-4, Variovorax paradoxus strain SJ100, Variovorax sp. CN3b and Uncultured bacterium clone C2.

Suggested Citation

  • Ning, Yan-Yan & Wang, Shao-Feng & Jin, Da-Wei & Harada, Hideki & Shi, Xian-Yang, 2013. "Formation of hydrogen-producing granules and microbial community analysis in a UASB reactor," Renewable Energy, Elsevier, vol. 53(C), pages 12-17.
    • Handle: RePEc:eee:renene:v:53:y:2013:i:c:p:12-17
    DOI: 10.1016/j.renene.2012.10.051
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    Cited by:

    1. De Coster, Jonas & Liu, Jia & Van den Broeck, Rob & Rossi, Barbara & Dewil, Raf & Appels, Lise, 2020. "Influence of electrochemical advanced oxidation on the long-term operation of an Upflow Anaerobic Sludge Blanket (UASB) reactor treating 4-chlorophenol containing wastewater," Renewable Energy, Elsevier, vol. 159(C), pages 683-692.
    2. Castelló, Elena & Nunes Ferraz-Junior, Antonio Djalma & Andreani, Cristiane & Anzola-Rojas, Melida del Pilar & Borzacconi, Liliana & Buitrón, Germán & Carrillo-Reyes, Julián & Gomes, Simone Damasceno , 2020. "Stability problems in the hydrogen production by dark fermentation: Possible causes and solutions," Renewable and Sustainable Energy Reviews, Elsevier, vol. 119(C).

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