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Alcohols for fuel: Biological energy to usable energy

Alcohols for fuel: Biological energy to usable energy. Beth Papanek. Three main alcohols:. Methanol Ethanol Butanol. History of Ethanol. biofuelsdigest.com. Potential Yield. History of Butanol. Produced commercially starting in the 1920’s. Source: Hans Blaschek. Ethanol vs. Butanol.

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Alcohols for fuel: Biological energy to usable energy

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  1. Alcohols for fuel:Biological energy to usable energy Beth Papanek

  2. Three main alcohols: • Methanol • Ethanol • Butanol

  3. History of Ethanol biofuelsdigest.com

  4. Potential Yield

  5. History of Butanol • Produced commercially starting in the 1920’s Source: Hans Blaschek

  6. Ethanol vs. Butanol Wikipedia: “Ethanol” “isobutanol”

  7. Comparison Source: Hans Blaschek

  8. Quick Biochem overview…

  9. Saccharomyces cerevisiae

  10. Butanol Metabolism Source: Hans Blaschek

  11. Problem: Preferential Hexose consumption 38-50% Cellulose, 15-30% Lignin, 23-32% Hemicellulose in cellulosic plants Source: bio.miami.edu

  12. Possible Improvements: Genetic Engineering • Saccharomyces cerevisiae • Gene expression for xylose uptake • Increased xylose transport • Clostridium beijerinckii • Inhibitor tolerance • Metabolic constraints • Electron flow

  13. References Ezeji, T., Qureshi, N., Blaschek, H. (2007) Bioproduction of butanol from biomass: from genes to bioreactors. Current Opinion in Biotechnology. 18: 220-227. Gray, K., Zhao, L., Emptage, M. (2006) Bioethanol. Current Opinion in Chemical Biology. 10: 141-146. Nevoigt, E. (2008) Progress in Metabolic Engineering of Saccharomyces cerevisiae. Microbioloby and Molecular Biology Reviews. 72: 379-412.

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