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

Menghui Yu, Jihong Li, Sandra Chang, Ran Du, Shizhong Li, Lei Zhang, Guifang Fan, Zhipei Yan, Ting Cui, Guangtao Cong and Gang Zhao
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Menghui Yu: Institute of Nuclear and New Energy Technology, Tsinghua University, Tsinghua Garden, Beijing 10084, China
Jihong Li: Institute of Nuclear and New Energy Technology, Tsinghua University, Tsinghua Garden, Beijing 10084, China
Sandra Chang: Institute of Nuclear and New Energy Technology, Tsinghua University, Tsinghua Garden, Beijing 10084, China
Ran Du: Institute of Nuclear and New Energy Technology, Tsinghua University, Tsinghua Garden, Beijing 10084, China
Shizhong Li: Institute of Nuclear and New Energy Technology, Tsinghua University, Tsinghua Garden, Beijing 10084, China
Lei Zhang: Institute of Nuclear and New Energy Technology, Tsinghua University, Tsinghua Garden, Beijing 10084, China
Guifang Fan: Institute of Nuclear and New Energy Technology, Tsinghua University, Tsinghua Garden, Beijing 10084, China
Zhipei Yan: Institute of Nuclear and New Energy Technology, Tsinghua University, Tsinghua Garden, Beijing 10084, China
Ting Cui: Institute of Nuclear and New Energy Technology, Tsinghua University, Tsinghua Garden, Beijing 10084, China
Guangtao Cong: Institute of Nuclear and New Energy Technology, Tsinghua University, Tsinghua Garden, Beijing 10084, China
Gang Zhao: Beijing Engineering Research Center for Biofuels, Beijing 10084, China

Energies, 2014, vol. 7, issue 7, 1-14

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.

Keywords: bioethanol; NaOH pretreatment; response surface methodology; simultaneous saccharification and co-fermentation; solid state fermented sweet sorghum bagasse (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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