Effect of corn stover concentration on rheological characteristics
- 163 Downloads
Corn stover, a well-known example of lignocellulosic biomass, is a potential renewable feed for bioethanol production. Dilute sulfuric acid pretreatment removes hemicellulose and makes the cellulose more susceptible to bacterial digestion. The rheologic properties of corn stover pretreated in such a manner were studied. The Power Law parameters were sensitive to corn stover suspension concentration becoming more non-Newtonian with slope n, ranging from 0.92 to 0.05 between 5 and 30% solids. The Casson and the Power Law models described the experimental data with correlation coefficients ranging from 0.90 to 0.99 and 0.85 to 0.99, respectively. The yield stress predicted by direct data extrapolation and by the Herschel-Bulkley model was similar for each concentration of corn stover tested.
Index EntriesCorn stover rheological measurement shear stress shear rate non-Newtonian fluids Power Law parameters
Unable to display preview. Download preview PDF.
- 4.Kemblowski, L. and Kristiansen, B. (1986), Biotechnol. Eng. 28, 1474–1483.Google Scholar
- 5.Metz, B., Kossen, N. W. F., and Van Suijdam, J. C. (1979), Adv. Biochem. Eng. 11, 103–155.Google Scholar
- 6.Charles, M. (1978), Adv. Biochem. Eng. 8, 1–62.Google Scholar
- 7.Svihla, C. K., Dronawat, S. N., and Hanley, T. R. (1995), Appl. Biochem. Biotechnol. 51/52, 355–366.Google Scholar
- 9.Dronawat, S. N., Rieth, T. C., Svihla, C. K., and Hanley, T. R. (1996), in Proceedings of the 5 th World Congress of Chemical Engineering, vol. 1. American Institute of Chemical Engineers, New York, NY, p. 629.Google Scholar
- 13.Dronawat, S. N. (1996), PhD thesis, University of Louisville, Louisville, KY.Google Scholar
- 14.Joch, R. E. C. (1993), MS thesis, University of Louisville, Louisville, KY.Google Scholar
- 15.Donnelly, J. A. (1995) MS thesis, University of Louisville, Louisville, KY.Google Scholar
- 16.Rieth, T. C. (1997) MS thesis, University of Louisville, Louisville, KY.Google Scholar