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Effects of Modified Activated Carbon on Microwave-Accelerated Organosolv Fractionation of Rice Husk
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Document Title
Effects of Modified Activated Carbon on Microwave-Accelerated Organosolv Fractionation of Rice Husk
Author
Suriyachai N., Wanmolee W., Khongchamnan P., Laosiripojana N., Champreda V., Kreetachat T., Imman S.
Name from Authors Collection
Affiliations
BIOTEC-JGSEE Integrative Biorefinery Laboratory, National Center for Genetic Engineering and Biotechnology, Innovation Cluster 2 Building, Thailand Science Park, Khlong Luang, Pathumthani, 12120, Thailand; School of Energy and Environment, University of Phayao, Tambon Maeka, Amphur Muang Phayao, Phayao, 56000, Thailand; National Nanotechnology Center, National Science and Technology Development Agency, Thailand Science Park, Khlong Luang, Pathumthani, 12120, Thailand; The Joint Graduate School of Energy and Environment (JGSEE), King Mongkut's University of Technology Thonburi, Prachauthit Road, Bangmod, Bangkok, 10140, Thailand; Center of Academic Service and Technology Transfer (CAST), School of Energy and Environment, University of Phayao, Tambon Maeka, Amphur Muang Phayao, Phayao, 56000, Thailand
Type
Article
Source Title
ACS Omega
ISSN
24701343
Year
2021
Volume
6
Issue
8
Page
5389-5398
Open Access
Gold, Green
Publisher
American Chemical Society
DOI
10.1021/acsomega.0c05575
Abstract
Organosolv fractionation is a promising approach for the separation of lignocellulosic components in integrated biorefineries where each component can be fully valorized into valuable platform chemicals and biofuels. In this study, microwave-accelerated organosolv fractionation was developed for the modification of lignocellulosic fractionation of rice husk. The fractionation condition was optimized for 1 h with the microwave irradiation at 300 W using a ternary solvent mixture composed of 24%:32%:44% water/ethanol/methyl isobutyl ketone. The effects of mineral acids (HCl, H3PO4, and H2SO4) and heterogeneous acid promoters (HCl, H3PO4, and H2SO4 impregnated over activated carbon) on the efficiency and selectivity of product yields (i.e., glucan, hemicellulose-derived products, and lignin) were also investigated. It was found that the use of H3PO4-activated carbon as the promoter showed superior performance on the fractionation of rice husk components, resulting in 88.8% recovery of cellulose, with 63.8% purity in the solid phase, whereas the recovery of hemicellulose (66.4%) with the lowest formation of furan and 5-hydroxymethyl furfural and lignin (81.0%) without sugar cross-contamination was obtained in the aqueous ethanol phase and organic phase, respectively. In addition, the morphology structure of fractionated rice husk presented 2.6-fold higher surface area (5.4 m2/g) of cellulose-enriched fraction in comparison with the native rice husk (2.1 m2/g), indicating the improvement of enzyme accessibility. Besides, the chemical changes of isolated lignin were also investigated by Fourier-transform infrared spectroscopy. This work gives pieces of information into the efficiencies of the microwave strategy as a climate neighborly elective fractionation method for this serious starting material in the biotreatment facility business. ©
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
License
CC BY-NC-ND
Rights
Author
Publication Source
Scopus