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Energies 2014, 7(7), 4054-4067; doi:10.3390/en7074054

Optimization of Ethanol Production from NaOH-Pretreated Solid State Fermented Sweet Sorghum Bagasse

1
Institute of Nuclear and New Energy Technology, Tsinghua University, Tsinghua Garden, Beijing 10084, China
2
Beijing Engineering Research Center for Biofuels, Beijing 10084, China
*
Authors to whom correspondence should be addressed.
Received: 21 February 2014 / Revised: 16 June 2014 / Accepted: 19 June 2014 / Published: 25 June 2014
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Abstract

Ethanol production from NaOH-Pretreated solid state fermented sweet sorghum bagasse with an engineered strain of Z. mobilis TSH-ZM-01 was optimized. Results showed that: (1) residual solid removal during ethanol fermentation was unnecessary and 24 h fermentation duration was optimal for ethanol production; (2) ethanol yield of 179.20 g/kg of solid state fermented sweet sorghum bagasse achieved under the optimized process conditions of cellulase loading of 0.04 g/g-glucan, xylanase loading of 0.01 g/g-xylan, liquid to solid ratio of 9:1 and pre-hydrolysis duration for 72 h. View Full-Text
Keywords: bioethanol; NaOH pretreatment; response surface methodology; simultaneous saccharification and co-fermentation; solid state fermented sweet sorghum bagasse bioethanol; NaOH pretreatment; response surface methodology; simultaneous saccharification and co-fermentation; solid state fermented sweet sorghum bagasse
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Yu, M.; Li, J.; Chang, S.; Du, R.; Li, S.; Zhang, L.; Fan, G.; Yan, Z.; Cui, T.; Cong, G.; Zhao, G. Optimization of Ethanol Production from NaOH-Pretreated Solid State Fermented Sweet Sorghum Bagasse. Energies 2014, 7, 4054-4067.

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