Journal
FUEL
Volume 278, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2020.118247
Keywords
Waste bamboo; Bioethanol production; Xylose application; Biorefinery; Value-added products
Categories
Funding
- Basic Science Research program through the National Research Foundation of Korea (NRF) - Ministry of Education [2019R1I1A1A01057394]
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [NRF-2018R1A2A2A05018238]
- National Research Foundation of Korea [2019R1I1A1A01057394] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Bioethanol is a typical product of biorefineries, and an alternative to fossil fuels, which increase greenhouse gas emission levels. However, high production costs hinder the widespread adoption of bioethanol refineries. Co-production of bioethanol and other value added by-products from waste biomass is an effective strategy to improve the cost competitiveness of bioethanol production. Disruption of the lignin structure in waste bamboo via hydrogen peroxide-acetic acid (HPAC) pretreatment improved the efficiency of the hydrolysis more than six times compared to hydrolysis without pretreatment. HPAC-pretreatment yielded no significant difference between separate hydrolysis and fermentation (SHF) and simultaneous saccharification and fermentation (SSF) processes in terms of the productivity of ethanol fermentation with optimized enzyme doses In contrast, the productivity of xylose was higher with SHF rather than SSF. Both products were successfully separated using a polydimethylsiloxane/polyetherimide (PDMS/PEI) hollow-fiber membrane. Co-production of xylose and bioethanol improved cost-competitiveness by simultaneous conversion processes for the co-production of xylulose and xylitol as value added byproducts.
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