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Multilevel composition fractionation process for high-value utilization of wheat straw cellulose
Alternative TitleBiotechnol. Biofuels
Chen, Hong-Zhang1; Liu, Zhi-Hua1,2
2014-11-18
Source PublicationBIOTECHNOLOGY FOR BIOFUELS
ISSN1754-6834
Volume7Pages:12
AbstractBackground: Biomass refining into multiple products has gained considerable momentum due to its potential benefits for economic and environmental sustainability. However, the recalcitrance of biomass is a major challenge in bio-based product production. Multilevel composition fractionation processes should be beneficial in overcoming biomass recalcitrance and achieving effective conversion of multiple compositions of biomass. The present study concerns the fractionation of wheat straw using steam explosion, coupled with ethanol extraction, and that this facilitates the establishment of sugars and lignin platform and enables the production of regenerated cellulose films. Results: The results showed that the hemicellulose fractionation yield was 73% under steam explosion at 1.6 MPa for 5.2 minutes, while the lignin fractionation yield was 90% by ethanol extraction at 160 degrees C for 2 hours and with 60% ethanol ( v/v). The cellulose yield reached up to 93% after steam explosion coupled with ethanol extraction. Therefore, cellulose sugar, hemicellulose sugar, and lignin platform were established effectively in the present study. Long fibers (retained by a 40-mesh screening) accounted for 90% of the total cellulose fibers, and the glucan conversion of short fibers was 90% at 9.0 hours with a cellulase loading of 25 filter paper units/g cellulose in enzymatic hydrolysis. Regenerated cellulose film was prepared from long fibers using [bmim]CI, and the tensile strength and breaking elongation was 120 MPa and 4.8%, respectively. The cross-section of regenerated cellulose film prepared by [bmim]CI displayed homogeneous structure, which indicated a dense architecture and a better mechanical performance. Conclusions: Multilevel composition fractionation process using steam explosion followed by ethanol extraction was shown to be an effective process by which wheat straw could be fractionated into different polymeric fractions with high yields. High-value utilization of wheat straw cellulose was achieved by preparing regenerated cellulose film using [bmim]CI.; Background: Biomass refining into multiple products has gained considerable momentum due to its potential benefits for economic and environmental sustainability. However, the recalcitrance of biomass is a major challenge in bio-based product production. Multilevel composition fractionation processes should be beneficial in overcoming biomass recalcitrance and achieving effective conversion of multiple compositions of biomass. The present study concerns the fractionation of wheat straw using steam explosion, coupled with ethanol extraction, and that this facilitates the establishment of sugars and lignin platform and enables the production of regenerated cellulose films.
KeywordMultilevel Composition Fractionation Process Steam Explosion Ethanol Extraction Wheat Straw Biomass High-value Utilization Long Fibers Short Fibers Ionic Liquid Regenerated Cellulose Film
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Technology
DOI10.1186/s13068-014-0137-3
URL查看原文
Indexed BySCI
Language英语
WOS KeywordSTEAM-EXPLOSION PRETREATMENT ; IONIC LIQUIDS ; CORN STOVER ; ENZYMATIC-HYDROLYSIS ; RICE STRAW ; BIOETHANOL PRODUCTION ; CHEMICAL-COMPOSITION ; MOISTURE-CONTENT ; PARTICLE-SIZE ; CHIP SIZE
WOS Research AreaBiotechnology & Applied Microbiology ; Energy & Fuels
WOS SubjectBiotechnology & Applied Microbiology ; Energy & Fuels
WOS IDWOS:000348218600001
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11709
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Chen, Hong-Zhang,Liu, Zhi-Hua. Multilevel composition fractionation process for high-value utilization of wheat straw cellulose[J]. BIOTECHNOLOGY FOR BIOFUELS,2014,7:12.
APA Chen, Hong-Zhang,&Liu, Zhi-Hua.(2014).Multilevel composition fractionation process for high-value utilization of wheat straw cellulose.BIOTECHNOLOGY FOR BIOFUELS,7,12.
MLA Chen, Hong-Zhang,et al."Multilevel composition fractionation process for high-value utilization of wheat straw cellulose".BIOTECHNOLOGY FOR BIOFUELS 7(2014):12.
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