Biomass-derived volatile fatty acid platform for fuels and chemicals
- 2k Downloads
The typical biorefinery platforms are sugar, thermochemical (syngas), carbon-rich chains, and biogas platforms, each offering unique advantages and disadvantages. The sugar platform uses hexose and pentose sugars extracted or converted from plant body mass. The thermochemical (syngas) platform entails a chemical or biological conversion process using pyrolysis or gasification of plants to produce biofuels. The carbon-rich chains platform is used to produce biodiesel from long-chain fatty acids or glycerides. In the present work, we suggest a new platform using volatile fatty acids (VFAs) for the production of biofuels and biochemicals production. The VFAs are short-chain fatty acids composed mainly of acetate and butyrate in the anaerobic digestion (AD) process, which does not need sterilization, additional hydrolysis enzymes (cellulose or xylanase), or a high cost pretreatment step. VFAs are easily produced from almost all kinds of biomass with low lignin content (terrestrial, aquatic, and marine biomass) by the AD process. Considering that raw material alone constitutes 40∼80% of biofuel production costs, biofuels made from VFAs derived from waste organic biomass potentially offer significant economical advantage.
Keywordsvolatile fatty acid anaerobic digestion biofuel biochemical
Unable to display preview. Download preview PDF.
- 3.Chynoweth, D. P. (2002) Review of biomethane from marine biomass (DRAFT). www.agen.ufl.edu/~chyn/download/Publications/DC/Reports/marinefinal_FT.pdf.Google Scholar
- 4.Carlsson, A. S., J. B. Beilen, R. Möller, and D. Clayton (2007) Micro- and macro-algae: Utility for industrial applications. CPL Press, Berks RG14 1RZ, UK.Google Scholar
- 5.Klass, D. L. (1998) Biomass for renewable energy, fuels, and chemicals. Academic Press, San Diego, CA, USA.Google Scholar
- 6.Park, J. I., H. C. Woo, and J. H. Lee (2008) Production of bio-energy from marine algae: status and perspectives. Korean Chem. Eng. Res. 46: 833–844.Google Scholar
- 9.Batstone, D. J., J. Keller, I. Angelidaki, S. V. Kalyuzhnyi, S. G. Pavlostathis, A. Rozzi, W. T. M. Sanders, H. Siegrist, and V. A. Vavilin (2002) Anaerobic digestion model no. 1. IWA task group for mathematical modelling of anaerobic digestion processes staff, London, UK.Google Scholar
- 12.Coyle, W. (2007) The future of biofuels: a global perspective. AMBER Waves 5: 24–29.Google Scholar
- 14.Agbogdo, F. K. (2005) Anaerobic fermentation of rice straw and chicken manure to carboxylic acids. Ph.D. Thesis. Texas A&M University, Texas, USA.Google Scholar
- 16.Moody, A. G. (2006) Pilot-scale fermentation of office paper and chicken manure to carboxylic acids. M.S. Thesis. Texas A&M University, Texas, USA.Google Scholar
- 18.Unpublished data in our study.Google Scholar
- 19.Bain, R. L. (2007) World biofuels assessment worldwide biomass potential: Technology characterizations. NREL Milestone Report. NREL/MP-510-42467.Google Scholar
- 20.Kann, B., P. R. Gruber, and M. Kamm (2007) Biorefineries — industrial processes and products: status quo and future directions. WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany.Google Scholar