Multilevel composition fractionation process for high-value utilization of wheat straw cellulose

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	Multilevel composition fractionation process for high-value utilization of wheat straw cellulose
	Chen, Hong-Zhang 1; Liu, Zhi-Hua 1,2
刊名	BIOTECHNOLOGY FOR BIOFUELS
	2014-11-18
卷号	7 页码:12
关键词	Multilevel composition fractionation process Steam explosion Ethanol extraction Wheat straw biomass High-value utilization Long fibers Short fibers Ionic liquid Regenerated cellulose film
ISSN号	1754-6834
其他题名	Biotechnol. Biofuels
中文摘要	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. 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.
英文摘要	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.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Technology
类目[WOS]	Biotechnology & Applied Microbiology ; Energy & Fuels
研究领域[WOS]	Biotechnology & Applied Microbiology ; Energy & Fuels
关键词[WOS]	STEAM-EXPLOSION PRETREATMENT ; IONIC LIQUIDS ; CORN STOVER ; ENZYMATIC-HYDROLYSIS ; RICE STRAW ; BIOETHANOL PRODUCTION ; CHEMICAL-COMPOSITION ; MOISTURE-CONTENT ; PARTICLE-SIZE ; CHIP SIZE
收录类别	SCI
原文出处	://WOS:000348218600001
语种	英语
WOS记录号	WOS:000348218600001
公开日期	2015-04-01
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/11709]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.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
推荐引用方式 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.