N-2 periodic pulsation process intensification to improve ethanol productivity in solid state fermentation of steam-exploded corn stalk

doi:10.1016/j.renene.2021.01.082

	N-2 periodic pulsation process intensification to improve ethanol productivity in solid state fermentation of steam-exploded corn stalk
	Wang, Lan 1; Zhou, Yaoyao 1,2; Liu, Yang 1,2; Chen, Hongzhang 1
刊名	RENEWABLE ENERGY
	2021-05-01
卷号	169 页码:1058-1065
关键词	Bioethanol Steam explosion Ethanol fermentation N-2 periodic pulsation Metabolic flux analysis
ISSN号	0960-1481
DOI	10.1016/j.renene.2021.01.082
英文摘要	Long fermentation time and high oxygen partial pressure were significant challenges for high ethanol productivity in solid state fermentation (SSF). In this study, the feasibility of N-2 periodic pulsation to improve ethanol productivity was investigated. Changes of CO2 concentration and water state distribution in N-2 periodic pulsation SSF were examined. A metabolic flux model was developed to understand the effect of N-2 periodic pulsation on ethanol production. The results indicated that ethanol productivity of 1.75 g/(L.h) in N-2 periodic pulsation group (NPPG) was 34.4% higher than that in control group (CG) within 24 h. The maximum ethanol concentration and yield were 47.52 g/L and 70.80% at 70% moisture content, respectively. The CO2 concentration in NPPG was well below 5000 ppm at 21 h, which was much lower than 38,080 ppm in CG. Metabolic flux analysis revealed that the metabolic flux towards ethanol increased by 25% with the application of N-2 periodic pulsation. These results confirmed that N-2 periodic pulsation is an effective method for improving ethanol production in solid state fermentation. (C) 2021 Published by Elsevier Ltd.
资助项目	National Key Research and Development Program of China[2019YFB1503800] ; Transformational Technologies for Clean Energy and Demonstration (Strategic Priority Research Program of the Chinese Academy of Sciences)[No.XDA 21060300]
WOS研究方向	Science & Technology - Other Topics ; Energy & Fuels
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000621835200004
资助机构	National Key Research and Development Program of China ; Transformational Technologies for Clean Energy and Demonstration (Strategic Priority Research Program of the Chinese Academy of Sciences)
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/47861]
专题	中国科学院过程工程研究所
通讯作者	Chen, Hongzhang
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing Key Lab Biomass Refining 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	Wang, Lan,Zhou, Yaoyao,Liu, Yang,et al. N-2 periodic pulsation process intensification to improve ethanol productivity in solid state fermentation of steam-exploded corn stalk[J]. RENEWABLE ENERGY,2021,169:1058-1065.
APA	Wang, Lan,Zhou, Yaoyao,Liu, Yang,&Chen, Hongzhang.(2021).N-2 periodic pulsation process intensification to improve ethanol productivity in solid state fermentation of steam-exploded corn stalk.RENEWABLE ENERGY,169,1058-1065.
MLA	Wang, Lan,et al."N-2 periodic pulsation process intensification to improve ethanol productivity in solid state fermentation of steam-exploded corn stalk".RENEWABLE ENERGY 169(2021):1058-1065.