Article
Biotechnology & Applied Microbiology
Felice Quartinello, Raditya Subagia, Sabine Zitzenbacher, Johanna Reich, Robert Vielnascher, Erik Becher, Melanie Hall, Doris Ribitsch, Georg M. Guebitz
Summary: In this study, the dihydropyrimidinase (DHPaseSK) from Saccharomyces kluyveri was cloned and expressed, and the Strep-tagged enzyme showed the fastest purification and highest specific activity. DHPaseSK_Strep demonstrated the ability to degrade short-chain polymers.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Caoxing Huang, Xiao Jiang, Xiaojun Shen, Jinguang Hu, Wei Tang, Xinxing Wu, Arthur Ragauskas, Hasan Jameel, Xianzhi Meng, Qiang Yong
Summary: Efficiently producing second-generation biofuels from biomass remains a long-term challenge due to biomass recalcitrance. Lignin significantly contributes to biomass recalcitrance by physically limiting enzyme access to carbohydrates. Research is focused on mitigating the negative effects of lignin on enzyme performance.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Review
Biotechnology & Applied Microbiology
Caoxing Huang, Ruolin Li, Wei Tang, Yayue Zheng, Xianzhi Meng
Summary: This review summarizes methods to improve enzymatic digestibility of pretreated biomass, including sulfite pretreatment to transform lignin structure and addition of reactive agents to block lignin's adverse impact.
FERMENTATION-BASEL
(2022)
Article
Energy & Fuels
Aki Koskela, Hannu Suopajarvi, Timo Fabritius
Summary: The interaction between lignin and coal in the carbonization process of metallurgical coke production was studied, and it was found that the interaction reduced with increasing pyrolysis temperature of lignin. This led to the formation of separate char and coke structures in the final coke.
Article
Materials Science, Multidisciplinary
Li Xu, Aiting Zhang, Ruijie Liao, Yuxia Pang, Dongjie Yang, Hongming Lou, Xueqing Qiu
Summary: By synthesizing a cationic copolymer, cellulase adsorption onto lignin surface can be effectively obstructed, leading to enhanced glucose release. The copolymers show versatility in different enzyme preparations, acid-treated lignocellulosic substrates, and solid saccharification systems, while also achieving enzyme saving. Mechanistically, the copolymer attenuates irreversible binding between lignin and cellulase and exerts a positive influence on enzyme activity.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Paper & Wood
Samarthya Bhagia, John R. Dunlap, Mohammed Zahid A. Khuraishi, Richard R. Lowden, Wellington Muchero, Uday K. Vaidya, Yunqiao Pu, Arthur J. Ragauskas
Summary: This study demonstrated the direct fibrillation of poplar into micro- to nano-sized biomass fibers using ultra-friction grinding, leading to the production of biomass papers with enhanced mechanical properties. Press-drying at a higher temperature and the addition of guar gum significantly increased the tensile strength of the papers. Press-drying also resulted in a higher thermogravimetric peak decomposition temperature compared to air-drying.
Article
Green & Sustainable Science & Technology
Qiulu Chu, Wenyao Tong, Shufang Wu, Yongcan Jin, Jinguang Hu, Kai Song
Summary: Different additives have varied mechanisms in mitigating lignin inhibition, with 2-naphthol reducing the formation of inhibitory derivatives from lignin, phenolic acids diminishing enzyme binding effect of insoluble lignin, and 2-naphthol-7-sulfonate showing the most pronounced mitigation on the physical blockage effect of lignin.
Article
Agricultural Engineering
Shi-Chang Liu, Tao Shi, Zi-Jing He, Kai Chen, Zhi-Hua Liu, Bing-Zhi Li, Ying-Jin Yuan
Summary: In this study, a novel easy-recycled ethylenediamine (EDA) pretreatment was designed to enable the simultaneous utilization of carbohydrates and lignin in lignocellulosic biomass (LCB) biorefinery. The results showed that this pretreatment achieved high yields of glucose and xylose in enzymatic hydrolysis, as well as the depolymerization and functionalization of lignin. The functionalized lignins exhibited pH-responsive behavior and excellent flocculation capacity. Therefore, the easy-recycled EDA pretreatment holds promise for improving the process feasibility and sustainability of LCB utilization.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Lorenz P. Manker, Graham R. Dick, Adrien Demongeot, Maxime A. Hedou, Christele Rayroud, Thibault Rambert, Marie J. Jones, Irina Sulaeva, Mariella Vieli, Yves Leterrier, Antje Potthast, Francois Marechal, Veronique Michaud, Harm-Anton Klok, Jeremy S. Luterbacher
Summary: The direct transformation of the hemicellulosic fraction of non-edible biomass into a tricyclic diester plastic precursor is demonstrated, which can be further processed into amorphous polyesters with high mechanical properties and strong gas barriers. These materials also possess the ability of chemical recycling and degradation.
Article
Chemistry, Physical
Meilian Cao, Qingxiang Wang, Wanli Cheng, Siqi Huan, Yi Hu, Zhaoxuan Niu, Guangping Han, Haitao Cheng, Ge Wang
Summary: In this study, biomass-derived honeycomb-like multilayered carbon (HMC) was successfully synthesized by electrospraying and direct carbonization, overcoming the common drawbacks of high cost and complicated activation procedures in carbon materials. The prepared HMC exhibited interconnected carbon skeleton and excellent microstructures, delivering high specific capacitance and cycling stability as electrode material for supercapacitors.
Article
Multidisciplinary Sciences
Shijie Yu, Xinyue Dong, Peng Zhao, Zhicheng Luo, Zhuohua Sun, Xiaoxiao Yang, Qinghai Li, Lei Wang, Yanguo Zhang, Hui Zhou
Summary: This study presents a hydrothermal system that allows independent control of temperature and pressure, enabling fast synthesis of carbon sub-micron spheres from cellulose. By decoupling temperature and pressure, the degradation temperature of cellulose is significantly reduced, leading to accelerated production of carbon sub-micron spheres and reduced carbon emissions.
NATURE COMMUNICATIONS
(2022)
Review
Chemistry, Multidisciplinary
Xi Cheng, Bruna Palma, Heng Zhao, Hongguang Zhang, Jiu Wang, Zhangxin Chen, Jinguang Hu
Summary: Photoreforming of lignocellulosic biomass to produce gas fuels and value-added chemicals is a promising strategy to address the fossil fuels crisis. Although the utilization of lignin via photoreforming is still in the early stages, it has exciting potential. This review summarizes the latest progress in the photoreforming of lignin-derived components and real lignin, providing insights for lignin photocatalytic valorization and introducing analytic methods for characterizing the conversion and distribution of lignin products. The challenges and perspectives of lignin photoreforming are also discussed, aiming to guide the future valorization of biomass into valuable chemicals and fuels through mild photoreforming processes.
Article
Energy & Fuels
Sharib Khan, Kait Kaarel Puss, Tiit Lukk, Mart Loog, Timo Kikas, Siim Salmar
Summary: Lignin from lignocellulosic biomass can replace raw materials in the chemical industry. In this study, hydrolysis lignin obtained via Sunburst(TM) pretreatment was enzymatically converted. Acid precipitated lignin (APL) was obtained through alkali solubilization and acid precipitation. Streptomyces coelicolor A3(2) showed the highest conversion rate of APL under highly alkaline conditions.
Article
Environmental Sciences
YuJie Wang, Jing-yong Liu, Jian Sun, Sumarlin Shangdiar, Kassian T. T. Amesho, Yung-Chang Lin, Yen-Ping Peng, Ken-Lin Chang
Summary: The acid-catalyzed ionic liquid pretreatment of rice husks significantly improves cellulose conversion, removes most hemicellulose, breaks down the crystalline structure and outer silica layer of the husks, making it favorable for industrial applications.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Andrew Caratenuto, Abdulrahman Aljwirah, Yanpei Tian, Xiaojie Liu, Yinsheng Wan, Yi Zheng
Summary: The study introduced a solar desalination device made of fallen leaves and guar, showcasing its efficient performance in producing drinkable water under various environmental conditions.
Article
Energy & Fuels
Dennis Jung, Paul Koerner, Andrea Kruse
Summary: This study evaluates the impact of acidity on the kinetic parameters of fructose hydrothermal conversion, revealing a non-linear relationship between the dehydration of fructose to HMF and the rehydration of HMF to LA with proton concentration. The formation rate of humins, on the other hand, shows a linear dependence on proton concentration with low sensitivity.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Energy & Fuels
Katrin Stoekle, Benedikt Huelsemann, David Steinbach, Zebin Cao, Hans Oechsner, Andrea Kruse
Summary: Forced chicory roots can be utilized in a cascaded manner by extracting sugars, hydrothermal carbonization, and anaerobic digestion, achieving a complete utilization of the biomass. This cascaded utilization can elongate the value chain of chicory and enhance the efficiency of biomass usage, with a carbon efficiency of 96%.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Engineering, Chemical
David Steinbach, Andreas Klier, Andrea Kruse, Joerg Sauer, Stefan Wild, Marina Zanker
Article
Chemistry, Multidisciplinary
Nattacha Paksung, Jens Pfersich, Pablo J. Arauzo, Dennis Jung, Andrea Kruse
Article
Agricultural Engineering
P. J. Arauzo, M. Lucian, L. Du, M. P. Olszewski, L. Fiori, A. Kruse
BIOMASS & BIOENERGY
(2020)
Article
Energy & Fuels
Manuel C. Bauer, Philipp Konnerth, Andrea Kruse
Summary: Liquefied dimethyl ether (DME) is a promising, green solvent for biomass lipid extractions. This study examines its use with four microalgae and cyanobacteria species, and finds that cryo-milling increases oil yield and improves fatty acid composition.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Editorial Material
Energy & Fuels
David Chiaramonti, Andrea Kruse, Marco Klemm
Article
Electrochemistry
Bishir Musa, Pablo Jose Arauzo, Maciej Pawel Olszewski, Andrea Kruse
Summary: Steam activation of corncob pyrochar increases surface area, porosity, stability, and redox reversibility, leading to high power output in microbial fuel cells.
Article
Chemistry, Physical
L. Du, A. Kruse
Summary: The study demonstrates the feasibility of using subcritical water for extracting valuable proteins and carbohydrates from Arthrospira platensis, providing an effective method for algal biorefinery.
JOURNAL OF SUPERCRITICAL FLUIDS
(2021)
Article
Agricultural Engineering
Zebin Cao, Benedikt Huelsemann, Dominik Wuest, Hans Oechsner, Armin Lautenbach, Andrea Kruse
Summary: The study shows that HTC treatment of biogas digestate can improve the slagging and fouling indices of hydrochar, with the specific methane yield of process water minimally affected by varying HTC residence time. Energy assessment reveals that HTC for 0.5 hours achieves the highest process efficiency and net energy gain, suggesting the use of 210 degrees C, 0.5 hours HTC condition for energy production.
BIORESOURCE TECHNOLOGY
(2021)
Article
Energy & Fuels
Ekaterina Ovsyannikova, Andrea Kruse, Gero C. Becker
Summary: HTL technology is a promising method to recover energy from sewage sludge and manure, producing bio-crude oil. This study focuses on recovering phosphate and ammoniacal nitrogen by producing struvite from the byproducts of HTL. The air-agitated system tested in the laboratory showed potential for enhancing the quality of the product, making it suitable for fertilizer use.
Article
Energy & Fuels
Katrin Stoekle, Dennis Jung, Andrea Kruse
Summary: Chicory roots are a low-cost agricultural residue that can be used as a feedstock for producing 5-Hydroxymethylfurfural (HMF). In this study, two methods were investigated to increase the fructose content in the extracted inulin and fructose from chicory roots. The first method involved acid-assisted extraction, while the second method involved aqueous extraction followed by nitric acid hydrolysis. It was found that separating extraction and hydrolysis was more suitable for integrating this process into a biorefinery concept for HMF production.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Chemistry, Multidisciplinary
Yaxin Deng, Tao Zhang, James Clark, Tejraj Aminabhavi, Andrea Kruse, Daniel C. W. Tsang, Brajendra K. Sharma, Fusuo Zhang, Hongqiang Ren
Review
Chemistry, Multidisciplinary
Francisco Javier Gutierrez Ortiz, Andrea Kruse
REACTION CHEMISTRY & ENGINEERING
(2020)
Article
Engineering, Environmental
Glaydson Simoes dos Reis, Bogdan Grigore Cazacliu, Catalina Rodriguez Correa, Ekaterina Ovsyannikova, Andrea Kruse, Carlos Hoffmann Sampaio, Eder Claudio Lima, Guillherme Luiz Dotto
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)