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Efficient ethanol production from paper mulberry pretreated at high solid loading in Fed-nonisothermal-simultaneous saccharification and fermentation

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Listed:
  • Wang, Zhaobao
  • Ning, Peng
  • Hu, Lihong
  • Nie, Qingjuan
  • Liu, Yiguo
  • Zhou, Yonghong
  • Yang, Jianming

Abstract

Paper mulberry, a fast-growing and vigorous plant, is a potential substrate for producing lignocellulosic bioethanol and an important renewable alternative to fossil fuels. In order to improve the economic feasibility of ethanol production from paper mulberry, H3PO4/H2O2 pretreatment was selected as the most suitable pretreatment method that could produce the highest glucose concentration (131 g/L) compared with other pretreatments (73.2–89.3 g/L) at high solid loading. Whereafter, the final solid loading of H3PO4/H2O2 pretreatment was significantly increased to 40% (w/v) without any decrease in the final glucose concentration. Finally, a novel Fed-nonisothermal-simultaneous saccharification and fermentation was constructed using H3PO4/H2O2 pretreated paper mulberry, which bypassed the inhibition caused by paper mulberry solid and high temperature on the traditional simultaneous saccharification and fermentation, improving ethanol concentration (63.9 g/L), ethanol productivity (1.33 g/L/h) and ethanol yield (0.160 g/g-biomass) by 30.4%, 30.4% and 30.1%, respectively, compared to those obtained from SSF (simultaneous saccharification and fermentation) process. Thus, we have opened up a novel way to produce ethanol or other biofuels using the paper mulberry as an outstanding alternative substrate.

Suggested Citation

  • Wang, Zhaobao & Ning, Peng & Hu, Lihong & Nie, Qingjuan & Liu, Yiguo & Zhou, Yonghong & Yang, Jianming, 2020. "Efficient ethanol production from paper mulberry pretreated at high solid loading in Fed-nonisothermal-simultaneous saccharification and fermentation," Renewable Energy, Elsevier, vol. 160(C), pages 211-219.
    • Handle: RePEc:eee:renene:v:160:y:2020:i:c:p:211-219
    DOI: 10.1016/j.renene.2020.06.128
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    References listed on IDEAS

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    1. Zhang, Changwei & Wen, Hao & Chen, Changjing & Cai, Di & Fu, Chaohui & Li, Ping & Qin, Peiyong & Tan, Tianwei, 2019. "Simultaneous saccharification and juice co-fermentation for high-titer ethanol production using sweet sorghum stalk," Renewable Energy, Elsevier, vol. 134(C), pages 44-53.
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    1. Qiao, Hui & Han, Mingyang & Ouyang, Shuiping & Zheng, Zhaojuan & Ouyang, Jia, 2022. "An integrated lignocellulose biorefinery process: Two-step sequential treatment with formic acid for efficiently producing ethanol and furfural from corn cobs," Renewable Energy, Elsevier, vol. 191(C), pages 775-784.
    2. Sharma, Sumit & Swain, Manas R. & Mishra, Abhishek & Mathur, Anshu S. & Gupta, Ravi P. & Puri, Suresh K. & Ramakumar, S.S.V. & Sharma, Ajay K., 2021. "High solid loading and multiple-fed simultaneous saccharification and co-fermentation (mf-SSCF) of rice straw for high titer ethanol production at low cost," Renewable Energy, Elsevier, vol. 179(C), pages 1915-1924.
    3. He, Dingping & Chen, Xueli & Lu, Minsheng & Shi, Suan & Cao, Limin & Yu, Haitao & Lin, Hao & Jia, Xiwen & Han, Lujia & Xiao, Weihua, 2023. "High-solids saccharification and fermentation of ball-milled corn stover enabling high titer bioethanol production," Renewable Energy, Elsevier, vol. 202(C), pages 336-346.
    4. Wang, Lan & Zhou, Yaoyao & Liu, Yang & Chen, Hongzhang, 2021. "N2 periodic pulsation process intensification to improve ethanol productivity in solid state fermentation of steam-exploded corn stalk," Renewable Energy, Elsevier, vol. 169(C), pages 1058-1065.

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