Abstract
Steam-exploded corn stover biomass was used as the substrate for fed-batch separate enzymatic hydrolysis and fermentation (SHF) to investigate the solid concentration ranging from 10% to 30% (w/w) on the lignocellulose enzymatic hydrolysis and fermentation. The treatment of washing the steam-exploded material was also evaluated by experiments. The results showed that cellulose conversion changed little with increasing solid concentration, and fermentation by Saccharomyces cerevisiae revealed a nearly same ethanol yield with the water-washed steam-exploded corn stover. For the washed material at 30% substrate concentration, i.e., 30% water insoluble solids (WIS), enzymatic hydrolysis yielded 103.3 g/l glucose solution and a cellulose conversion of 72.5%, thus a high ethanol level up to 49.5 g/l. With the unwashed steam-exploded corn stover, though a cellulose conversion of 70.9% was obtained in hydrolysis at 30% solid concentration (27.9% WIS), its hydrolysate did not ferment at all, and the hydrolysate of 20% solid loading containing 3.3 g/l acetic acid and 145 mg/l furfural already exerted a strong inhibition on the fermentation and ethanol production.
Similar content being viewed by others
References
Galbe, M., & Zacchi, G. (2007). Pretreatment of lignocellulosic materials for efficient bioethanol production. Advances in Biochemical Engineering/Biotechnology, 108, 41–65.
Varga, E., Klinke, H., Réczey, K., & Thomsen, A. B. (2004). High solids simultaneous saccharification and fermentation of wet oxidized corn stover to ethanol. Biotechnology and Bioengineering, 88, 567–574. doi:10.1002/bit.20222.
Alexander, E., Farrell, D., Plevin, R. J., Turner, B. T., Jones, A. D., O’Hare, M., et al. (2006). Ethanol can contribute to energy and environmental goals. Science, 311, 506–508. doi:10.1126/science.1121416.
Öhgren, K., Rudolf, A., Galbe, M., & Zacchi, G. (2006). Fuel ethanol production from steam-pretreated corn stover using SSF at higher dry matter content. Biomass and Bioenergy, 30, 863–869. doi:10.1016/j.biombioe.2006.02.002.
Wyman, C. E., Dale, B. E., Elander, R. T., Holtzapple, M., Ladisch, M. R., & Lee, Y. Y. (2005). Coordinated development of leading biomass pretreatment technologies. Bioresource Technology, 96, 1959–1966. doi:10.1016/j.biortech.2005.01.010.
Wingren, A., Galbe, M., & Zacchi, G. (2003). Techno-economic evaluation of producing ethanol from softwood: Comparison of SSF and SHF and identification of bottlenecks. Biotechnology Progress, 19, 1109–1117. doi:10.1021/bp0340180.
Torget, R., Walter, P. J., Himmel, M., & Grohmann, K. (1991). Dilute-acid pretreatment of corn residues and short rotation woody crops. Applied Biochemistry and Biotechnology, 28/29, 75–86.
Schell, D. J., Walter, P. J., & Johnson, D. K. (1992). Dilute sulfuric acid pretreatment of corn stover at high solids concentrations. Applied Biochemistry and Biotechnology, 34/35, 659–665.
Kaar, W. E., & Holtzapple, M. T. (2000). Using lime pretreatment to facilitate the enzymic hydrolysis of corn stover. Biomass and Bioenergy, 18, 189–199. doi:10.1016/S0961-9534(99)00091-4.
Esteghlalian, A., Hashimoto, A. G., Fenske, J. J., & Penner, M. H. (1997). Modelling and optimization of the diluted-sulfuric-acid pretreatment of corn stover, poplar and switchgrass. Bioresource Technology, 59, 129–136. doi:10.1016/S0960-8524(97)81606-9.
Kalman, G., Varga, E., & Reczey, K. (2002). Diluted sulphuric acid pretreatment of corn stover at long residence times. Chem Biochem Eng Q, 16, 151–157.
Bayrock, D. P., & Ingledew, W. M. (2001). Application of multistage continuous fermentation for production of fuel alcohol by very-high-gravity fermentation technology. Journal of Industrial Microbiology & Biotechnology, 27, 87–93. doi:10.1038/sj.jim.7000167.
Schell, D. (2005). 2005 OBP biennial peer review, energy efficiency and renewable energy. http://programreview.biomass.govtools.us/%5Cdocuments%5C11e80e62-6e8a-4858-a0e5-1fa75a591116.ppt
Zacchi, G., & Axelsson, A. (1989). Economic evaluation of preconcentration in production of ethanol from dilute sugar solutions. Biotechnology and Bioengineering, 34, 223–233. doi:10.1002/bit.260340211.
Fan, Z. L., South, C., Lyford, K., Munsie, J., van Walsum, P., & Lynd, L. R. (2003). Conversion of paper sludge to ethanol in a semicontinuous solids-fedreactor. Bioprocess and Biosystems Engineering, 26, 93–101. doi:10.1007/s00449-003-0337-x.
Rudolf, A., Alkasrawi, M., Zacchi, G., & Liden, G. (2005). A comparison between batch and fed-batch simultaneous saccharification and fermentation of steam pretreated spruce. Enzyme and Microbial Technology, 37, 195–204. doi:10.1016/j.enzmictec.2005.02.013.
Varga, E., Klinke, H. B., Reczey, K., & Thomsen, A. B. (2004). High solid simultaneous saccharification and fermentation of wet oxidized corn stover to ethanol. Biotechnology and Bioengineering, 88, 567–574. doi:10.1002/bit.20222.
Wayman, M., Parekh, S., Chornet, E., & Overend, R. P. (1986). SO2-catalysed prehydrolysis of coniferous wood for ethanol production. Biotechnology Letters, 8, 749–752. doi:10.1007/BF01032576.
Jørgensen, H., Vibe, J., Larsen, J., & Felby, C. (2007). Liquefaction of lignocellulose at high-solids concentrations. Biotechnology and Bioengineering, 96, 862–870. doi:10.1002/bit.21115.
Tolan, J. S. (2002). Iogen’s process for producing ethanol from cellulosic biomass. Clean Technol Environ Policy, 3, 339–345. doi:10.1007/s10098-001-0131-x.
Lu, Y., Yang, B., Gregg, D., Saddler, J. N., & Mansfield, S. D. (2002). Cellulase adsorption and an evaluation of enzyme recycle during hydrolysis of steam-exploded softwood residues. Applied Biochemistry and Biotechnology, 98/100, 641–654. doi:10.1385/ABAB:98-100:1-9:641.
Dien, B. S., Li, L., Iten, L. B., Jordan, D. B., Nichols, N. N., O’Bryan, P. J., et al. (2006). Enzymatic saccharification of hot-water pretreated corn fiber for production of monosaccharides. Enzyme and Microbial Technology, 39, 1137–1144. doi:10.1016/j.enzmictec.2006.02.022.
Klinke, H. B., Thomsen, A. B., & Ahring, B. K. (2004). Inhibition of ethanol-producing yeast and bacteria by degradation products produced during pretreatment of biomass. Applied Microbiology and Biotechnology, 66, 10–26. doi:10.1007/s00253-004-1642-2.
Palmqvist, E., Grage, H., Meinander, N. Q., & Hahn-Hagerdal, B. (1999). Main and interaction effects of acetic acid, furfural, and p-hydroxybenzoic acid on growth and ethanol productivity of yeasts. Biotechnology and Bioengineering, 63, 46–55. doi:10.1002/(SICI)1097-0290(19990405)63:1<46::AID-BIT5>3.0.CO;2-J.
National Renewable Energy Laboratory (NREL). Chemical analysis and testing laboratory analytical procedures, LAP-002 (1996), LAP-003 (1995), LAP-004 (1996), LAP-005 (1994), LAP-010 (1994) and LAP-017 (1998), NREL, Golden, CO, USA. http://www.eere.energy.gov/biomass/analytical_procedures.html.
Öhgren, K., Bengtsson, O., Gorwa, M. F., Galbe, M., Hahn, B., & Zacchi, G. (2006). Simultaneous saccharification and co-fermentation of glucose and xylose in steam-pretreated corn stover at high fiber content with Saccharomyces cerevisiae TMB3400. Journal of Biotechnology, 126, 488–498. doi:10.1016/j.jbiotec.2006.05.001.
Linde, M., Galbe, M., & Zacchi, G. (2007). Simultaneous saccharification and fermentation of steam-pretreated barley straw at low enzyme loadings and low yeast concentration. Enzyme and Microbial Technology, 40, 1100–1107. doi:10.1016/j.enzmictec.2006.08.014.
Kim, S. H., & Holtzapple, M. T. (2005). Lime pretreatment and enzymatic hydrolysis of corn stover. Bioresource Technology, 96, 1994–2006. doi:10.1016/j.biortech.2005.01.014.
Acknowledgements
This work was financially supported by the National Basic Research Program (973 Program 2007CB714303) and Shanghai Leading Academic Discipline Project B505. We thank COFCO Bio-energy (Zhaodong) Limited for supplying the steam-exploded corn stover material and Green Global Inc. for kindly providing the enzyme.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Lu, Y., Wang, Y., Xu, G. et al. Influence of High Solid Concentration on Enzymatic Hydrolysis and Fermentation of Steam-Exploded Corn Stover Biomass. Appl Biochem Biotechnol 160, 360–369 (2010). https://doi.org/10.1007/s12010-008-8306-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12010-008-8306-0