Recent Advances in Second Generation Ethanol Production by Thermophilic Bacteria

Sean Michael Scully and Johann Orlygsson
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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

Energies, 2014, vol. 8, issue 1, 1-30

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).

Keywords: bioethanol; thermophiles; second generation biofuel; genetic engineering; consolidated processes (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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