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Efficiency of catalytic liquid hot water pretreatment for conversion of corn stover to bioethanol
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Document Title
Efficiency of catalytic liquid hot water pretreatment for conversion of corn stover to bioethanol
Author
Suriyachai N.,Weerasai K.,Upajak S.,Khongchamnan P.,Wanmolee W.,Laosiripojana N.,Champreda V.,Suwannahong K.,Imman S.
Name from Authors Collection
Affiliations
Integrated Biorefinery excellent Center (IBC), School of Energy and Environment and School of Energy and Environment, University of Phayao, Amphur Muang, Phayao, 56000, Thailand; BIOTEC-JGSEE Integrative Biorefinery Laboratory, National Center for Genetic Engineering and Biotechnology, Khlong Luang, Pathum Thani, 12120, Thailand; Joint Graduate School for Energy and Environment (JGSEE), King Mongkut’s University of Technology Thonburi, Bangkok, 10140, Thailand; School of Energy and Environment, University of Phayao, Amphur Muang, Phayao, 56000, Thailand; National Nanotechnology Center, National Science and Technology Development Agency, Klong Laung, Pathum Thani, 12120, Thailand; Department of Environmental Health, Faculty of Public Health, Burapha University, Chonburi, 20131, Thailand
Type
Article
Source Title
ACS Omega
ISSN
24701343
Year
2020
Volume
5
Issue
46
Open Access
All Open Access, Bronze, Green
Publisher
American Chemical Society
DOI
10.1021/acsomega.0c04054
Abstract
Lignocellulose is a promising raw material for the production of second-generation biofuels. In this study, the effects of acid-catalyzed liquid hot water (LHW) on pretreatment of corn stover (CS) for subsequent hydrolysis and conversion to ethanol were studied. The effects of reaction temperature, acid concentration, and residence time on glucose yield were evaluated using a response surface methodology. The optimal condition was 162.4 °C for 29.5 min with 0.45% v/v of sulfuric acid, leading to the maximum glucose yield of 91.05% from enzymatic hydrolysis of the cellulose-enriched fraction. Conversion of the solid fraction to ethanol by simultaneous saccharification and fermentation resulted in a theoretical ethanol yield of 93.91% based on digestible glucose. Scanning electron microscopy revealed disruption on the microstructure of the pretreated CS. Increases of crystallinity index and surface area of the pretreated biomass were observed along with alteration in the functional group profiles, as demonstrated by Fourier transform infrared spectroscopy. This work provides an insight into the effects of LHW on the enzymatic susceptibility and modification of the physicochemical properties of CS for further application on bioethanol production in biorefinery. © 2020 American Chemical Society.
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
Funding Sponsor
Office of the Higher Education Commission; Thailand Research Fund; University of Phayao
License
CC BY-NC-ND
Rights
ACS
Publication Source
Scopus