Article
Green & Sustainable Science & Technology
Xiangxue Chen, Shuangmei Liu, Rui Zhai, Xinchuan Yuan, Yang Yu, Guannan Shen, Zhao Wang, Jianming Yu, Mingjie Jin
Summary: The study found that lime pretreatment of pelleted corn stover (PCS) can effectively enhance ethanol production. After optimizing the pretreatment conditions, lime-PCS achieved high conversion rates of glucan and xylan through enzymatic hydrolysis. Additionally, lime pretreatment altered the chemical composition and microstructure of the biomass.
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
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
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
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
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
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)
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
Agricultural Engineering
Qishuai Ma, Wenting Zhou, Xiaoyu Du, Hao Huang, Zhiwei Gong
Summary: A novel combination of dilute sulfuric acid with Tween 80 pretreatment was developed to enhance enzyme digestibility of corn stover. The synergistic effects of H2SO4 and Tween 80 efficiently removed hemicellulose and lignin, resulting in significantly increased saccharification yield. The physical and chemical characteristics of the pretreated corn stover were studied, and the repeatedly recovered pretreatment liquor showed highly-effective reusability for at least four cycles.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Hongqiong Zhang, Rui Zhang, Yunong Song, Xinying Miu, Quanguo Zhang, Jingbo Qu, Yong Sun
Summary: This study investigated the effects of using urea combined with steam explosion on the enzymatic hydrolysis and ethanol production of corn stover. The results showed that optimal conditions for ethanol production were 4.87% urea addition and 1.22 MPa steam pressure. The addition of urea and steam explosion significantly increased the reducing sugar yield and degradation rates of cellulose, hemicellulose, and lignin.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Hongzhen Luo, Lei Gao, Fang Xie, Yongjiang Shi, Tairan Zhou, Yufen Guo, Rongling Yang, Muhammad Bilal
Summary: In this study, the effects of glycerol organosolv pretreatment (GOP) on the main chemical composition of corn stover were investigated. It was found that the L-cysteine-assisted GOP process could enhance the yields of glucose and xylose. The study also elucidated the intrinsic mechanisms of the proposed pretreatment and conducted a techno-economic analysis.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Yue Wu, Xinting Li, Fucheng Li, Zhe Ling, Yao Meng, Fushan Chen, Zhe Ji
Summary: This study introduced a novel strategy combining seawater hydrothermal treatment with electro-generated alkaline hydrogen peroxide pretreatment to fractionate corn stover into high value-added products, achieving high glucose yield and effective delignification. The recovered lignin fraction was characterized by various techniques, demonstrating the efficacy of the pretreatment process in biorefinery-based fractionation of corn stover.
BIORESOURCE TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Wan Sun, Xuezhi Li, Jian Zhao, Yuqi Qin
Summary: This study focused on the fractionation of corn stover using different pretreatment strategies to enhance enzymatic digestibility and cellulosic ethanol production. The combined dilute acid and alkaline sodium sulfite pretreatment effectively separated cellulose, hemicellulose, and lignin from corn stover. The results provided valuable insights for the biorefinery of corn stover.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Agricultural Engineering
Yonghua Xu, Yunong Song, Hao Jiang, Hongqiong Zhang, Yong Sun
Summary: Lignin degradation limits the efficiency of corn stover anaerobic fermentation. This study tested the vacuum negative pressure aerobic hydrolysis pretreatment of corn stover and identified the optimal combined pretreatment conditions. The pretreatment design involved vacuum conditions (0.02-0.08 MPa) and dwell time (5-20 min), which resulted in changes in stover's volumetric weight, swelling, and specific porosity compared to the CK group. Continuous vacuum negative pressure treatment helped discharge air and destroy the microstructure, facilitating settling of the stover during aerobic hydrolysis.
INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Yanwen Wu, Haipeng Guo, Md Shafiqur Rahman, Xuantong Chen, Jinchi Zhang, Yun Liu, Wensheng Qin
Summary: The study showed that the Bacillus sp. P3 strain significantly enhanced enzymatic saccharification in corn stover, with an improved hemicellulose removal rate through the production of alkaline-resistant xylanase and other enzymes. After pretreatment with the P3 strain, the glucan content in corn stover increased by 51% and the yield of reducing sugar released during enzymatic hydrolysis was increased by 56% compared to untreated corn stover. The use of the P3 strain could be a promising approach for enhancing the enzymatic hydrolysis process in industrial bioenergy productions.
BIORESOURCES AND BIOPROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Xuemei Liu, Chaonan Cui, Shuoshuo Wei, Jinyu Han, Xinli Zhu, Qingfeng Ge, Hua Wang
Summary: This study presents a new strategy for designing efficient photocatalysts that can convert CO2 into hydrocarbons by utilizing synergistic catalytic sites. The findings provide a solution for the selective photocatalytic reduction of CO2 to CH4.
Article
Chemistry, Multidisciplinary
Chengxian Hu, Dan Wang, Lu Wang, Ying Fu, Zhengyin Du
Summary: A novel one-pot, three-component reaction conducted under electrochemical conditions was studied. The reaction involved 2-aminothiophenols, aldehydes, and malononitrile, using TBABF4 as an electrolyte and CuI as a catalyst. The proposed reaction mechanism suggested that CuI served as an electron relay. This method offers simplified operation, high atom economy, and mild reaction conditions.
Article
Chemistry, Multidisciplinary
Zhi Yang, Yu Chen, Linxi Wan, Yuxiao Li, Dan Chen, Jianlin Tao, Pei Tang, Fen-Er Chen
Summary: A highly enantioselective method for the complete hydrogenation of pyrimidinium salts using Ir/(S,S)-f-Binaphane complex as the catalyst was developed. This method provides easy access to fully saturated chiral hexahydropyrimidines, which are prevalent in many bioactive molecules. The reactions exhibit high yields and enantioselectivities under mild reaction conditions without additives. Successful application of this methodology in a continuous flow fashion further extends its practical utility.
Article
Chemistry, Multidisciplinary
Tina Jeoh, Jennifer Danger Nill, Wujun Zhao, Sankar Raju Narayanasamy, Liang Chen, Hoi-Ying N. Holman
Summary: In this study, the enzymatic hydrolysis of cellulose was investigated using real-time infrared spectromicroscopy. The spatial heterogeneity of cellulose was found to impact the hydrolysis kinetics. Hydration affected cellulose ordering, and Cel7A preferentially removed less extensively hydrogen bonded cellulose.
Article
Chemistry, Multidisciplinary
Tiphaine Richard, Walid Abdallah, Xavier Trivelli, Mathieu Sauthier, Clement Dumont
Summary: An effective method of grafting functionalities onto lignin based on glycerol carbonate has been developed using an efficient nickel-catalysed telomerisation reaction. This method allows lignin to have new reactive functions and reduces the glass transition temperatures of modified lignins, thereby expanding the application range of lignin-based resins.
Article
Chemistry, Multidisciplinary
Jing Qi, Xiyan Wang, Gan Wang, Srinivas Reddy Dubbaka, Patrick ONeill, Hwee Ting Ang, Jie Wu
Summary: This study presents a green and environmentally friendly approach for the synthesis of imides using electrocatalytic oxidation with H2O as the oxygen source. The method eliminates the need for toxic or expensive oxidants and achieves high yields under mild reaction conditions. It shows broad substrate compatibility and potential for industrial applications.
Article
Chemistry, Multidisciplinary
Babasaheb Sopan Gore, Lin-Wei Pan, Jun-Hao Lin, Yi-Chi Luo, Jeh-Jeng Wang
Summary: Here, we report a visible light-promoted intramolecular radical cascade reaction for the construction of fluorenol and naphthalene-fused cyclopropyl carbaldehyde derivatives. This method offers mild reaction conditions, a broad substrate scope, excellent step efficiency, and scalability, without the need for external chemical oxidants. The novelty of this protocol was demonstrated by synthesizing chrysene analogs and performing late-stage functionalizations.
Article
Chemistry, Multidisciplinary
Juho Antti Sirvio, Idamaria Romakkaniemi, Juha Ahola, Svitlana Filonenko, Juha P. Heiskanen, Ari Ammala
Summary: This article discusses the method of using supramolecular interaction between an aromatic hydrogen bond donor and lignin to achieve rapid delignification of softwood at low temperatures.
Article
Chemistry, Multidisciplinary
Yunyan Meng, Chunxiang Pan, Na Liu, Hongjiang Li, Zixiu Liu, Yao Deng, Zixiang Wei, Jianbin Xu, Baomin Fan
Summary: A novel visible light-driven synthesis method for 2,3-diamines has been developed, which has mild conditions, avoids the use of metal reagents, and can synthesize diamines and diols in one pot.
Article
Chemistry, Multidisciplinary
Mingqing Huang, Haiyang Huang, Mengyao You, Xinxin Zhang, Longgen Sun, Chao Chen, Zhichao Mei, Ruchun Yang, Qiang Xiao
Summary: A direct air-oxidized strategy for the synthesis of benzo[b]phosphole oxides was developed in this study. Arylphosphine oxides were transformed into phosphinoyl radicals, which were further combined with various alkynes to achieve the desired products. DFT calculations revealed the mechanism of phosphinoyl radical formation.
Article
Chemistry, Multidisciplinary
Anwei Wang, Jiayin Huang, Chunsheng Zhao, Yu Fan, Junfeng Qian, Qun Chen, Mingyang He, Weiyou Zhou
Summary: This study demonstrates an innovative strategy for the aerobic oxidation of C(sp(3))-H bonds using gamma-valerolactone. By optimizing the reaction conditions and utilizing specific catalysts, efficient oxidation of C(sp(3))-H bonds is achieved with good chemoselectivity in certain cases.
Article
Chemistry, Multidisciplinary
Shun Li, Likai Tong, Zhijian Peng, Bo Zhang, Xiuli Fu
Summary: Sulfide compounds show promise as electrocatalysts for water splitting, but their performance is limited by factors such as limited active sites and hindered substance transport. This study successfully prepared a high-entropy sulfide (ZnCoMnFeAlMg)(9)S-8, which reduced grain size and increased specific surface area, enabling the realization of a dual-functional catalyst with multiple catalytic sites. High entropy also modulated the electronic properties of sulfides, reducing the potential energy barrier for hydrolysis. This research introduces a new approach for functionalizing high entropy nanomaterials and improves the performance of water splitting catalysts.