An electrogenerated base for the alkaline oxidative pretreatment of lignocellulosic biomass to produce bioethanol
Abstract
In this study, we aimed to develop an alternative base to substitute for NaOH for use in alkaline oxidative biomass pretreatment. An electrogenerated base (EGB) from water electrolysis was employed in the alkaline oxidative pretreatment of corn stover (CS). Similar to NaOH, when the EGB was used in pretreatment, 56.6% of the original lignin was removed after 6 h pretreatment, leading to significantly enhanced enzymatic digestibility. The glucan digestibility of the pretreated CS was 3.8 times higher than that of raw CS after 24 h. The ethanol metabolic yields were 64.6% and 72.4% when using activated carbon detoxified hydrolysate or hydrolysate at pH 5.5, respectively. These results demonstrate that an EGB, a byproduct from various electrocatalytic processes, could be used as a potential replacement for NaOH. Moreover, we propose a new biorefinery concept, which combines water electrolysis, biological conversion and thermochemical/catalytic conversion to produce bioethanol, hydrogen, hydrocarbon fuels and valuable chemicals.
- Authors:
-
[1];
- Qilu Univ. of Technology, Jinan (China). Dept. of Bioengineering
- Michigan State Univ., East Lansing, MI (United States). Dept. of Chemical Engineering and Materials Science. Dept. of Biosystems and Agricultural Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Qilu Univ. of Technology, Jinan (China)
- Sponsoring Org.:
- USDOE; Natural Science Foundation of Shandong Province (China); Major Research & Development Program of Shandong Province (China)
- OSTI Identifier:
- 1471884
- Grant/Contract Number:
- AC05-00OR22725; ZR2014BM031; 2015GSF121022
- Resource Type:
- Accepted Manuscript
- Journal Name:
- RSC Advances
- Additional Journal Information:
- Journal Volume: 7; Journal Issue: 75; Journal ID: ISSN 2046-2069
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS
Citation Formats
Liu, Tongjun, and Li, Zhenglong. An electrogenerated base for the alkaline oxidative pretreatment of lignocellulosic biomass to produce bioethanol. United States: N. p., 2017.
Web. doi:10.1039/C7RA08101D.
Liu, Tongjun, & Li, Zhenglong. An electrogenerated base for the alkaline oxidative pretreatment of lignocellulosic biomass to produce bioethanol. United States. https://doi.org/10.1039/C7RA08101D
Liu, Tongjun, and Li, Zhenglong. Mon .
"An electrogenerated base for the alkaline oxidative pretreatment of lignocellulosic biomass to produce bioethanol". United States. https://doi.org/10.1039/C7RA08101D. https://www.osti.gov/servlets/purl/1471884.
@article{osti_1471884,
title = {An electrogenerated base for the alkaline oxidative pretreatment of lignocellulosic biomass to produce bioethanol},
author = {Liu, Tongjun and Li, Zhenglong},
abstractNote = {In this study, we aimed to develop an alternative base to substitute for NaOH for use in alkaline oxidative biomass pretreatment. An electrogenerated base (EGB) from water electrolysis was employed in the alkaline oxidative pretreatment of corn stover (CS). Similar to NaOH, when the EGB was used in pretreatment, 56.6% of the original lignin was removed after 6 h pretreatment, leading to significantly enhanced enzymatic digestibility. The glucan digestibility of the pretreated CS was 3.8 times higher than that of raw CS after 24 h. The ethanol metabolic yields were 64.6% and 72.4% when using activated carbon detoxified hydrolysate or hydrolysate at pH 5.5, respectively. These results demonstrate that an EGB, a byproduct from various electrocatalytic processes, could be used as a potential replacement for NaOH. Moreover, we propose a new biorefinery concept, which combines water electrolysis, biological conversion and thermochemical/catalytic conversion to produce bioethanol, hydrogen, hydrocarbon fuels and valuable chemicals.},
doi = {10.1039/C7RA08101D},
journal = {RSC Advances},
number = 75,
volume = 7,
place = {United States},
year = {Mon Oct 09 00:00:00 EDT 2017},
month = {Mon Oct 09 00:00:00 EDT 2017}
}
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