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Energy requirements during butanol production and in situ recovery by cyclic vacuum

Author

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  • Mariano, Adriano Pinto
  • Filho, Rubens Maciel
  • Ezeji, Thaddeus Chukwuemeka

Abstract

Performance of the ABE fermentation and integrated product recovery by cyclic vacuum was investigated in a 14-l bioreactor containing initial glucose concentration of 60 g l−1 at 35 °C. The cyclic operation consisted of 2 h-vacuum-cycles separated by 4 h-fermentation intervals at atmospheric pressure. Application of periodic vacuum sufficed to eliminate butanol inhibition of Clostridium beijerinckii 8052 culture, which tolerated alternate vacuum and atmospheric pressures. A 39% reduction in the energy requirement for acetone butanol ethanol (ABE) fermentation and in situ recovery by vacuum was achieved by changing the mode of vacuum operation from continuous (24 h vacuum time) to cyclic (12 h vacuum time). Analysis of the overall energy consumption for ABE fermentation and recovery (vacuum fermentation + distillation) demonstrated that cyclic vacuum ABE fermentation is more energy efficient than the conventional batch fermentation.

Suggested Citation

  • Mariano, Adriano Pinto & Filho, Rubens Maciel & Ezeji, Thaddeus Chukwuemeka, 2012. "Energy requirements during butanol production and in situ recovery by cyclic vacuum," Renewable Energy, Elsevier, vol. 47(C), pages 183-187.
    • Handle: RePEc:eee:renene:v:47:y:2012:i:c:p:183-187
    DOI: 10.1016/j.renene.2012.04.041
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    Cited by:

    1. Grisales Díaz, Victor Hugo & Willis, Mark J. & von Stosch, Moritz & Olivar Tost, Gerard & Prado-Rubio, Oscar, 2020. "Assessing the energy requirements for butanol production using fermentation tanks-in-series operated under vacuum," Renewable Energy, Elsevier, vol. 160(C), pages 1253-1264.
    2. Gottumukkala, Lalitha Devi & Haigh, Kate & Görgens, Johann, 2017. "Trends and advances in conversion of lignocellulosic biomass to biobutanol: Microbes, bioprocesses and industrial viability," Renewable and Sustainable Energy Reviews, Elsevier, vol. 76(C), pages 963-973.
    3. Nogueira, Cleitiane da Costa & Padilha, Carlos Eduardo de Araújo & Dantas, Júlia Maria de Medeiros & Medeiros, Fábio Gonçalves Macêdo de & Guilherme, Alexandre de Araújo & Souza, Domingos Fabiano de S, 2021. "In-situ detoxification strategies to boost bioalcohol production from lignocellulosic biomass," Renewable Energy, Elsevier, vol. 180(C), pages 914-936.

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