Article
Biotechnology & Applied Microbiology
Valerie Garcia-Negron, Matthew J. Toht
Summary: This study demonstrates the viability of utilizing CO2 to produce Na2CO3 for efficient pretreatment of corn stover biomass. The pretreated biomass showed higher cellulose content and lower lignin content, resulting in higher and more stable glucose yields during enzymatic hydrolysis. The use of cellulase-rich enzyme solution further increased sugar concentrations.
FERMENTATION-BASEL
(2022)
Article
Agricultural Engineering
Shuaishuai Ma, Longrui Li, Xiurong Ren, Wanbin Zhu, Hongliang Wang
Summary: This study proposes an innovative method using CO2 and ALD as pretreatment reagents for corn stover in biomethane production. The results show that CO2-ALD pretreatment significantly increases biomethane yield and disrupts the structure of lignocellulose.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Engineering, Environmental
Samuel Ntakirutimana, Tao Xu, Ming -Zhu Ding, Zhi-Hua Liu, Bing-Zhi Li, Ying-Jin Yuan
Summary: The development of multifunctional pretreatments for effective and economical fractionation of lignocellulosic biomass, aiming at lignocellulose-oriented valorization, can lead to cutting-edge innovation in biorefinery. A high-solid chemomechanical pretreatment based on ball milling coupled with ethylenediamine was designed to maximize corn stover biomass output under mild temperature and active stabilization. The synergistic effects of this pretreatment brought about desirable characteristics that enhanced delignification and saccharification, while reducing solvent load and energy consumption compared to ethylenediamine pretreatment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Ling Ding, Amber N. Hoover, Rachel M. Emerson, Kuan-Ting Lin, Josephine N. Gruber, Bryon S. Donohoe, Jordan L. Klinger, Rachel D. Colby, Brad J. Thomas, William A. Smith, Allison E. Ray
Summary: Imaging in the visible spectrum is a cost-effective tool for monitoring biomass quality. Rapid image analysis and preprocessing can reduce the impact of feedstock variation and guide selective sorting and quality management. This study used image analysis to evaluate the quality of corn stover and identified material attribute variations related to biological degradation and soil contamination. Logistic regression-based classification algorithms were used to develop a method for biomass screening. Fourier transform infrared analysis suggested a correlation between red band intensity and biological degradation, while surface texture analysis distinguished variations in ash content.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Agronomy
Iria Firvida, Pablo G. del Rio, Patricia Gullon, Beatriz Gullon, Gil Garrote, Aloia Romani
Summary: This study evaluated a delignification process using lime as an alternative alkali to improve enzymatic saccharification of corn stover cellulose, leading to successful production of bioethanol. Through experimental design, optimal conditions were identified for high cellulose and xylan recovery rates, delignification efficiency, and cellulose-to-glucose conversion rate.
Article
Green & Sustainable Science & Technology
Zhimin Wang, Yuan Huang, Fengjiao Zhang, Hui Xie, Guangce Jiang, Dongcan Lv, Hongsen Zhang, Su Shiung Lam, Andong Song
Summary: This research demonstrates that thioglycolic acid (TA) significantly accelerates Fenton pretreatment (FP) of corn stover (CS) and improves enzymatic hydrolysis of cellulose and xylan. TA-assisted FP greatly improves the removal of hemicellulose and lignin, resulting in an increase in pore volume, pore size, and cellulose exposure, thus promoting the enzymatic saccharification of CS.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Rathziel Roncancio, Adity Bora, Jay P. Gore
Summary: The global annual energy demand continues to rise, and all energy sources are needed. Most nations have agreed to incentivize the use of renewable sources and pursue greenhouse gas recycling to curb global warming. Biomass, as a carbon-neutral renewable source, can be recycled into useful liquids and solids through the gasification and deoxidation of CO2 reactions.
Article
Green & Sustainable Science & Technology
Maryam Molaverdi, Keikhosro Karimi, Safoora Mirmohamadsadeghi, Mats Galbe
Summary: Sodium carbonate pretreatment can improve ethanol concentration at high solids and low enzyme loadings, and steam pretreatment can further increase ethanol concentration on this basis.
Article
Agronomy
Haiyan Chen, Xuezhi Li, Shaoyang Yu, Yuqi Qin, Yinbo Qu, Jian Zhao
Summary: The study demonstrates that using potassium permanganate assisted organosolv pretreatment of corn stover significantly increases carbohydrate yields, improves enzymatic hydrolysis efficiency, and optimizes process conditions. The differences in morphological features, fiber surface chemical compositions, crystallinity degree, and thermostability of pretreated corn stover with and without KMnO4 in ethanol-water pretreatment process are characterized to explore the underlying reasons for the enhancement.
GLOBAL CHANGE BIOLOGY BIOENERGY
(2021)
Article
Agricultural Engineering
Yameng Li, Xiaoni Fan, Haorui Zhang, Fuke Ai, Yinggang Jiao, Quanguo Zhang, Zhiping Zhang
Summary: The study found that torrefaction pretreatment could significantly enhance the enzymatic saccharification and hydrogen production efficiency of corn stover, with the best effects observed at 200 degrees Celsius.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Environmental
Zhimin Wang, Fengjiao Zhang, Dongcan Lv, Guangce Jiang, Hongsen Zhang, Guangqin Gao, Aimin Ning, Su Shiung Lam, Andong Song
Summary: In this study, an Iron Oxychloride (FeOCl)-based heterogeneous Fenton method was proposed as a promising approach for lignocellulose pretreatment, showing higher reducing sugars yield and easier catalyst recovery compared to the traditional Fe2+/H2O2 homogeneous Fenton reaction.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Fengyang Xue, Wenzhi Li, Shengxin An, Cunshuo Li, Xu Li, Mingwei Wu, Xiuzhi Wei
Summary: The study demonstrates that pretreatment using ethylene glycol and dilute sulfuric acid for lignocellulose fractionation is a simple, efficient, and promising process for corn stover biorefinery. Delignification and cellulose retention rates are high, leading to a significant increase in enzymatic hydrolysis sugar yield compared to untreated corn stover. The regenerated lignin can also be utilized to produce renewable aromatic chemicals and alkane fuels.
Article
Energy & Fuels
Likang Deng, Jun Li
Summary: The physical pretreatment of thread rolling was applied to enhance the efficiency of enzymatic hydrolysis of sugar cane bagasse and corn stalks rich in lignocellulose. Results showed that the larger mesh size of enzymolysis substrates led to higher monosaccharide recovery rates, indicating the effectiveness of thread rolling pretreatment in improving the efficiency of enzymatic hydrolysis.
Article
Materials Science, Paper & Wood
Benkun Qi, Zhenwu Wang, Jianquan Luo, Yinhua Wan
Summary: In this study, acid and alkali catalyzed choline chloride pretreatment of corn stover showed different effects on lignin and xylan removal, with acidified ChCl being more effective in delignification and alkalified ChCl better at removing xylan. However, alkalified ChCl pretreatment resulted in higher glucose yield compared to acidified ChCl pretreatment. The correlation studies indicated that high delignification and larger cellulose crystallite size were key factors contributing to high enzymatic hydrolysis efficiency. Additionally, analysis of extracted lignin showed changes in molecular weight and phenolic hydroxyl groups based on different pretreatment methods.
Article
Chemistry, Applied
Mingzhao Guan, Qiyu Liu, Haosheng Xin, Enchen Jiang, Qiaozhi Ma
Summary: Molten salt hydrate (MSH) pretreatment technology shows remarkable degradation effects on cellulose hydrolysis, especially more prominent in corn stover.
FUEL PROCESSING TECHNOLOGY
(2021)
