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Recent Advances in Second Generation Ethanol Production by Thermophilic Bacteria

Author

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  • Sean Michael Scully

    (Faculty of Natural Resource Sciences, University of Akureyri, Borgir, Nordurslod 2, IS-600 Akureyri, Iceland)

  • Johann Orlygsson

    (Faculty of Natural Resource Sciences, University of Akureyri, Borgir, Nordurslod 2, IS-600 Akureyri, Iceland)

Abstract

There is an increased interest in using thermophilic bacteria for the production of bioethanol from complex lignocellulosic biomass due to their higher operating temperatures and broad substrate range. This review focuses upon the main genera of thermophilic anaerobes known to produce ethanol, their physiology, and the relevance of various environmental factors on ethanol yields including the partial pressure of hydrogen, ethanol tolerance, pH and substrate inhibition. Additionally, recent development in evolutionary adaptation and genetic engineering of thermophilic bacteria is highlighted. Recent developments in advanced process techniques used for ethanol production are reviewed with an emphasis on the advantages of using thermophilic bacteria in process strategies including separate saccharification and fermentation, simultaneous saccharification and fermentation (SSF), and consolidated bioprocessing (CBP).

Suggested Citation

  • Sean Michael Scully & Johann Orlygsson, 2014. "Recent Advances in Second Generation Ethanol Production by Thermophilic Bacteria," Energies, MDPI, vol. 8(1), pages 1-30, December.
  • Handle: RePEc:gam:jeners:v:8:y:2014:i:1:p:1-30:d:43924
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    References listed on IDEAS

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    1. Amore, Antonella & Faraco, Vincenza, 2012. "Potential of fungi as category I Consolidated BioProcessing organisms for cellulosic ethanol production," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(5), pages 3286-3301.
    2. Sigurbjornsdottir, Margret Audur & Orlygsson, Johann, 2012. "Combined hydrogen and ethanol production from sugars and lignocellulosic biomass by Thermoanaerobacterium AK54, isolated from hot spring," Applied Energy, Elsevier, vol. 97(C), pages 785-791.
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    Cited by:

    1. Majidian, Parastoo & Tabatabaei, Meisam & Zeinolabedini, Mehrshad & Naghshbandi, Mohammad Pooya & Chisti, Yusuf, 2018. "Metabolic engineering of microorganisms for biofuel production," Renewable and Sustainable Energy Reviews, Elsevier, vol. 82(P3), pages 3863-3885.

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