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Ethanol Production from High Solids Loading of Alkali-Pretreated Sugarcane Bagasse with an SSF Process
Gao, Yueshu1,2; Xu, Jingliang1; Yuan, Zhenhong1; Zhang, Yu1; Liang, Cuiyi1; Liu, Yunyun1
2014
Source PublicationBIORESOURCES
Volume9Issue:2Pages:3466-3479
AbstractA fed-batch process and high-temperature simultaneous saccharification and fermentation (SSF) process were investigated to obtain high sugar yield and ethanol concentration. Different amounts of alkali-pretreated sugarcane bagasse were added during the first 24 h. For the highest final dry matter (DM) content of 25% (w/v), a maximal glucose and total sugar concentration of 79.53 g/L and 135.39 g/L, respectively, were achieved with 8.3 FPU/g substrate after 120 h of hydrolysis. Based on the hydrolysis experiment, two processes for ethanol production from sugarcane bagasse, simultaneous saccharification and fermentation (SSF) and separate hydrolysis and fermentation (SHF), were also compared using S. cerevisiae. The results indicated that ethanol concentration and yield in the SHF were higher, while ethanol productivity (gram per unit volume and over time) was lower. For 25% substrate loading, the ethanol productivity and ethanol concentration could reach 0.38 g.L-1.h(-1) and 36.25 g/L SSF in 96 h, respectively, while that of SHF could reach 0.32 g.L-1.h(-1), with an ethanol concentration of 47.95 g/L in 152 h for SHF. When high-temperature simultaneous saccharification and fermentation (SSF) process was performed by using Kluyveromyces marxianus NCYC 587 at 42 degrees C, 42.21 g/L ethanol (with an ethanol productivity of 0.44 g.L-1.h(-1)) was produced with 25% dry matter content and 8.3 FPU cellulase/g substrate, which meant 16.4% more ethanol when compared with SSF of S. cerevisiae.
SubtypeArticle
KeywordSugarcane Bagasse Fed-batch High Temperature Simultaneous Saccharification And Fermentation Separate Hydrolysis And Fermentation Ethanol
WOS HeadingsScience & Technology ; Technology
WOS Subject ExtendedMaterials Science
WOS KeywordDRY-MATTER CONTENT ; SIMULTANEOUS SACCHARIFICATION ; CORN STOVER ; SACCHAROMYCES-CEREVISIAE ; LIGNOCELLULOSIC MATERIALS ; BIOETHANOL PRODUCTION ; ENZYMATIC-HYDROLYSIS ; ZYMOMONAS-MOBILIS ; FUEL ETHANOL ; FERMENTATION
Indexed BySCI
Language英语
WOS SubjectMaterials Science, Paper & Wood
WOS IDWOS:000336960700133
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10620
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Gao, Yueshu,Xu, Jingliang,Yuan, Zhenhong,et al. Ethanol Production from High Solids Loading of Alkali-Pretreated Sugarcane Bagasse with an SSF Process[J]. BIORESOURCES,2014,9(2):3466-3479.
APA Gao, Yueshu,Xu, Jingliang,Yuan, Zhenhong,Zhang, Yu,Liang, Cuiyi,&Liu, Yunyun.(2014).Ethanol Production from High Solids Loading of Alkali-Pretreated Sugarcane Bagasse with an SSF Process.BIORESOURCES,9(2),3466-3479.
MLA Gao, Yueshu,et al."Ethanol Production from High Solids Loading of Alkali-Pretreated Sugarcane Bagasse with an SSF Process".BIORESOURCES 9.2(2014):3466-3479.
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