scholarly journals CHARACTERISTICS OF CORN STOVER PRETREATED WITH LIQUID HOT WATER AND FED-BATCH SEMI-SIMULTANEOUS SACCHARIFICATION AND FERMENTATION FOR BIOETHANOL PRODUCTION

2015 ◽  
pp. 21-49
Author(s):  
Xuezhi Li ◽  
Jie Lu ◽  
Jian Zhao ◽  
Yinbo Qu
Keyword(s):  
Corn Stover ◽  
Simultaneous Saccharification And Fermentation ◽  
Hot Water ◽  
Bioethanol Production ◽  
Fed Batch ◽  
Liquid Hot Water ◽  
Simultaneous Saccharification

Inhibitory compounds formation after liquid hot water (LHW) pretreatment of corn stover as an alternative to wood lignocellulosic feedstock for bioethanol production

2020 ◽  
Vol 110 ◽  
pp. 110-117
Author(s):  
Florentyna Akus-Szylberg ◽  
Andrzej Antczak ◽  
Janusz Zawadzki
Keyword(s):  
Corn Stover ◽  
Hot Water ◽  
Bioethanol Production ◽  
Spectrophotometric Methods ◽  
Liquid Hot Water ◽  
Treatment Conditions ◽  
Lignocellulosic Feedstock ◽  
Inhibitory Compounds ◽  
Different Temperatures ◽  
Mixed Biomass

Inhibitory compounds formation after liquid hot water (LHW) pretreatment of corn stover as an alternative to wood lignocellulosic feedstock for bioethanol production. Thus far, corn stover has been perceived as a promising lignocellulosic alternative to wood intended for bioethanol procurement, however it should be recognised also as a potential future component in a mixed biomass system. The aim of this research was to investigate the effect of applying different hydrothermal treatment conditions on the potential inhibitory compounds formation from corn stover. An analysis of selected inhibitory compounds formed after pretreatment performed at different temperatures (160°C, 175°C, 190°C and 205°C) was carried out. Furfural, simple sugars and lignin were some of the inhibitors examined with HPLC and UV-VIS spectrophotometric methods. Furthermore, the chemical composition of organic extracts obtained from native and LHW pretreated biomass was analyzed qualitatively with GC-MS method and inhibitory compounds like vanillin, sitosterol or syringol were detected. As a result of those investigations compared to enzymatic hydrolysis yield the temperature of 175°C was chosen as the most promising condition of corn stover LHW pretreatment in terms of the efficiency of the subsequent phases of bioethanol production.

scholarly journals Efficient fractionation of corn stover by bisulfite pretreatment for the production of bioethanol and high value products

BioResources ◽  
2019 ◽  
Vol 14 (3) ◽  
pp. 6501-6515
Author(s):  
Liping Tan ◽  
Zhongyang Liu ◽  
Tongjun Liu ◽  
Fangfang Wang
Keyword(s):  
Corn Stover ◽  
Simultaneous Saccharification And Fermentation ◽  
Bioethanol Production ◽  
Different Types ◽  
Pretreatment Conditions ◽  
C 30 ◽  
Hemicellulosic Sugars ◽  
Resin Separation ◽  
Simultaneous Saccharification

Fractionation of corn stover (CS) was carried out by bisulfite pretreatment in order to improve the production of bioethanol and high-value chemicals. Firstly, the optimum bisulfite pretreatment conditions of CS (170 C, 30 min, 7% NaHSO3, 1% H2SO4) were identified. Next, a biorefinery process of bisulfite pretreatment for CS was proposed. CS was separated into solid and liquor components using such pretreatment. The solid components were employed for bioethanol production by quasi-simultaneous saccharification and fermentation (Q-SSF). The bisulfite liquor was fractionated into hemicellulosic sugars and lignin by different types of resins. It was shown that CS components could be effectively fractionated through bisulfite pretreatment in combination with resin separation to produce bioethanol, hemicellulosic sugars, and lignosulfonate.

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