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Periodic peristalsis enhancing the high solids enzymatic hydrolysis performance of steam exploded corn stover biomass
Liu, Zhi-Hua1,2; Chen, Hong-Zhang1
2016-10-01
Source PublicationBIOMASS & BIOENERGY
ISSN0961-9534
Volume93Issue:OCTPages:13-24
Abstract

Enzymatic hydrolysis beyond 15% solid loading offers many advantages such as increased sugar and ethanol concentrations and decreased capital cost. However, difficult mixing and handling limited its industrialized application. A novel intensification method, periodic peristalsis, had been exploited to improve the high solids enzymatic hydrolysis performance of steam exploded corn stover (SECS). The optimal steam explosion conditions were 200 degrees C and 8 min, under which glucan and xylan recovery was 94.3% and 64.8%, respectively. Glucan and xylan conversions in periodic peristalsis enzymatic hydrolysis (PPEH) were 28.0-38.5% and 25.0-36.0% higher than those in static state enzymatic hydrolysis with solid loading increasing from 1% to 30%, respectively, while they were 1.0-11.2% and 3.0-9.2% higher than those in incubator shaker enzymatic hydrolysis (ISEH). Glucan and xylan conversion in PPEH at 21% solid loading reached 71.2% and 70.3%, respectively. Periodic peristalsis also facilitated fed-batch enzymatic hydrolysis of which SECS was added completely before transition point. Results presented that PPEH shortened the transition point time from solid state to slurry state, decreased the viscosity of hydrolysis mixture, and reduced the denaturation effect of enzymes compared with ISEH, and hence improve the high solids enzymatic hydrolysis efficiency. (C) 2016 Elsevier Ltd. All rights reserved.

KeywordPeriodic Peristalsis High Solids Enzymatic Hydrolysis Steam Explosion Enzyme Activity Viscosity
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Technology
DOI10.1016/j.biombioe.2016.06.022
Indexed BySCI
Language英语
WOS KeywordSIMULTANEOUS SACCHARIFICATION ; EXPLOSION PRETREATMENT ; CELLULOSE HYDROLYSIS ; ETHANOL-PRODUCTION ; PARTICLE-SIZE ; LIGNOCELLULOSE ; DIGESTIBILITY ; FRACTIONATION ; FERMENTATION ; BIOETHANOL
WOS Research AreaAgriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS SubjectAgricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
Funding OrganizationNational Basic Research Program of China (973 Project)(2011CB707401) ; National Key Laboratory of Biochemical Engineering(2013KF-01)
WOS IDWOS:000382541000003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21442
Collection生化工程国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Liu, Zhi-Hua,Chen, Hong-Zhang. Periodic peristalsis enhancing the high solids enzymatic hydrolysis performance of steam exploded corn stover biomass[J]. BIOMASS & BIOENERGY,2016,93(OCT):13-24.
APA Liu, Zhi-Hua,&Chen, Hong-Zhang.(2016).Periodic peristalsis enhancing the high solids enzymatic hydrolysis performance of steam exploded corn stover biomass.BIOMASS & BIOENERGY,93(OCT),13-24.
MLA Liu, Zhi-Hua,et al."Periodic peristalsis enhancing the high solids enzymatic hydrolysis performance of steam exploded corn stover biomass".BIOMASS & BIOENERGY 93.OCT(2016):13-24.
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