Ethanol production from municipal solid waste
The organic fraction of municipal solid waste (OFMSW) has a high potential for converting to ethanol. Hydrothermal pretreatment was conducted for the solubilization of the starch fraction as well as pretreatment of the lignocellulosic fraction. The treatment liquor, which was rich in starch, was evaluated for ethanol production through simultaneous saccharification and fermentation (SSF) process using Saccharomyces cerevisiae. Solid phase was subjected to a solid-state simultaneous saccharification and fermentation (SSSF) process to obtain high titer of ethanol, leading to several advantages, e.g., lower energy and water consumption as well as lower wastewater effluent. Hydrothermal pretreatment of OFMSW at 160 °C and 20% (w/w) solid loading for 30 min resulted in a liquor containing 124 g/L soluble starch. Both liquor and solid fractions were then subjected to ethanol production and 81 g/L ethanol was obtained.
C. Krishna (2005). Solid-state fermentation systems—an overview. Crit. Rev. Biotechnol., 25, 1-2, pp. 1-30.
G. Zacchi and A. Axelsson (1989). Economic evaluation of preconcentration in production of ethanol from dilute sugar solutions. Biotechnol. Bioeng., 34, 2, pp. 223-233.
H. Alter (1991), The future course of solid waste management in the U.S. Waste Manage. Res., 9, 1, pp. 3-20.
J. Fargione, J. Hill, D. Tilman, S. Polasky, and P. Hawthorne (2008), Land Clearing and the Biofuel Carbon Debt. Sci., 319, 5867, pp. 1235-1238.
J. V. Kumar, R. Mathew, and A. Shahbazi (1998). Bioconversion of solid food wastes to ethanol. Analyst, 123, 3, pp. 497-502.
K. E. Kang, D. P. Chung, Y. Kim, B. W. Chung, and G. W. Choi (2015). High-titer ethanol production from simultaneous saccharification and fermentation using a continuous feeding system. Fuel, 145, pp. 18-24.
M. Ballesteros, F. Sáez, I. Ballesteros, P. Manzanares, M. J. Negro, J. M. Martínez, and J. M. O. Dominguez (2010), Ethanol production from the organic fraction obtained after thermal pretreatment of municipal solid waste. Appl. Biochem. Biotechnol., 161, 1-8, pp. 423-431.
M. Galbe and G. Zacchi (2007). Pretreatment of lignocellulosic materials for efficient bioethanol production, Biofuels. Springer, pp. 41-65.
M. Galbe, P., Sassner, A., Wingren, and G. Zacchi (2007). Process engineering economics of bioethanol production, Biofuels. Springer, pp. 303-327.
M. J. Taherzadeh and K. Karimi (2008). Pretreatment of lignocellulosic wastes to improve ethanol and biogas production: a review. Inter. J. Molecul. Sci., 9, 9, pp. 1621-1651.
M. Lever, G. Ho, and R. Cord-Ruwisch (2010). Ethanol from lignocellulose using crude unprocessed cellulase from solid-state fermentation. Bioresour. Technol., 101, 18, pp. 7083-7087.
N. Akhtar, D. Goyal, and A. Goyal (2017). Characterization of microwave-alkali-acid pre-treated rice straw for optimization of ethanol production via simultaneous saccharification and fermentation (SSF). Energy Convers. Manage., 141, pp. 133-144.
N. I. Canabarro, C. Alessio, E. L. Foletto, R.C. Kuhn, W. L. Priamo, and M. A. Mazutti (2017). Ethanol production by solid-state saccharification and fermentation in a packed-bed bioreactor. Renew. Energy, 102, pp. 9-14.
N. Mosier, R. Hendrickson, N. Ho, M. Sedlak, and M. R. Ladisch (2005). Optimization of pH controlled liquid hot water pretreatment of corn stover. Bioresour. Technol., 96, 18, pp. 1986-1993.
P. Mahmoodi, K. Karimi, and M.J. Taherzadeh (2018). Efficient conversion of municipal solid waste to biofuel by simultaneous dilute-acid hydrolysis of starch and pretreatment of lignocelluloses. Energy Convers. Manage., 166, pp. 569-578.
P. Mahmoodi, K. Karimi, and M.J. Taherzadeh (2018a). Hydrothermal processing as pretreatment for efficient production of ethanol and biogas from municipal solid waste. Bioresour. Technol., 261, pp. 166-175.
Q. Wang, H. Ma, W. Xu, L. Gong, W. Zhang, and D. Zou (2008). Ethanol production from kitchen garbage using response surface methodology. Biochem. Eng. J., 39, 3, pp. 604-610.
X. Zhao, Y. Song, and D. Liu (2011). Enzymatic hydrolysis and simultaneous saccharification and fermentation of alkali/peracetic acid-pretreated sugarcane bagasse for ethanol and 2, 3-butanediol production. Enzyme Microb. Technol., 49, 4, pp. 413-419.
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