Download Biotechnology for Fuels and Chemicals: Proceedings of the by Wilfred Vermerris (auth.), William S. Adney, James D. PDF

By Wilfred Vermerris (auth.), William S. Adney, James D. McMillan, Jonathan Mielenz, K. Thomas Klasson (eds.)

In Biotechnology for Fuels and chemical substances: The Twenty-Ninth Symposium, leading US and overseas researchers from academia, undefined, and executive trade state-of-the-art technical details and replace present traits within the improvement and alertness of biotechnology for sustainable construction of fuels and chemical substances. This symposium emphasizes advances in biotechnology to provide high-volume, low-price items from renewable assets, whereas enhancing the surroundings. the most important parts of curiosity comprise complex feedstock creation and processing, enzymatic and microbial biocatalysis, bioprocess examine and improvement, possibilities in biorefineries, and commercialization of biobased items. foreign and household development on generating liquid biofuels, specifically ethanol and biodiesel, is highlighted, and similar issues, together with bioseparations and optimum integration of biochemical and thermochemical conversion applied sciences, are featured. Forward-looking and authoritative, Biotechnology for Fuels and chemical substances: The Twenty-NInth Symposium offers an illuminating evaluate of present examine and improvement within the construction of commodity fuels and chemical substances from renewable biomass assets through biochemical and thermochemical routes.

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Extra resources for Biotechnology for Fuels and Chemicals: Proceedings of the Twenty-Ninth Symposium on Biotechnology for Fuels and Chemicals Held April 29–May 2, 2007, in Denver, Colorado

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At relatively high solid concentrations loaded by the portion method, constant viscosity was observed, indicating Newtonian behavior for slurries at low and high shear rates during initial enzymatic hydrolysis and SFF process. Rheological Parameter Estimation for the Pseudoplastic Suspension Several researchers reported viscoelastic behavior of yeast suspensions. Labuza et al. [9] reported shear-thinning behavior of baker's yeast (s. 5% (w/w). The power law model was successfully applied. More recently, Mancini and Moresi [10] also measured the rheological properties of baker's yeast using different rheometers in the concentration range of 25 to 200 g dm- 3 .

Applied Biochemistry and Biotechnology, 121-124,303-310. 6. Akin, D. , Hartley, R. , Fulcher, R. , & Rigsby L. L. (1990). Crop Science, 30, 396-401. 7. Hill, G. , Gates, R. , West, J. W, Watson, R. S. & Mullinix, B. G. (2001). Journal of Animal Science, 79(1),235. 8. Jung, H. , & Allen, M. S. (1995). Journal of Animal Science, 73,2774-2790. 9. Burton, G. W, Gates, R. , & Hill, G. M. (1993). Crop Science, 33, 644-645. 10. , West, J. W, Hill, G. , Gates, R. , Hatfield, R. , Mullinix, B. , et al. (1999).

Results for average shear stress and contour distributions of viscosity over the range of tank radial position in the mixing tank illustrated that the fluid viscosity was significantly reduced in the high shear stress regions. Consequently, the fluid moved rapidly through this regIOn. Conclusions The rheological analysis of high-solids substrates in the bioreactor during the enzymatic hydrolysis and ethanol fermentation showed a dramatic decrease in viscosity as a function of time. Initial reaction time and specifically biomass concentration were found to affect the bioreactor hydrodynamics.

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