Article
Biochemistry & Molecular Biology
Iliyana Naydenova, Temenuzhka Radoykova, Tsvetelina Petrova, Ognyan Sandov, Ivo Valchev
Summary: The aim of this study was to convert technically hydrolyzed lignin (THL) into sugars using high-temperature diluted sulfuric acid hydrolysis of softwood and hardwood chips. The THL was carbonized at different temperatures (500, 600, and 700°C) to produce biochar. The properties of the biochar, including chemical composition, thermal stability, and textural properties, were investigated. The results showed that increasing the carbonization temperature resulted in a reduction in volatile organic compounds and an increase in fixed carbon, ash, and C-content. The biochar obtained at 600 and 700°C had properties suitable for selective adsorption and catalytic purposes.
Article
Agricultural Engineering
Cheng-Ye Ma, Ling-Hua Xu, Qian Sun, Shao-Ni Sun, Xue-Fei Cao, Jia-Long Wen, Tong-Qi Yuan
Summary: This study developed an ultrafast alkaline deep eutectic solvents (DES) pretreatment strategy to efficiently extract lignin nanoparticles and retain cellulose residues for the production of fermentative glucose. The DES pretreatment showed excellent delignification performance and the regenerated DES lignin nanoparticles exhibited well-preserved structures and antioxidant activity, making them suitable for the production of chemicals and lignin-based materials.
BIORESOURCE TECHNOLOGY
(2022)
Article
Polymer Science
Yuzhi Xu, Ning Li, Guangbin Wang, Chunpeng Wang, Fuxiang Chu
Summary: A novel bio-based methyl methacrylate copolymerized with butyl acrylate (MMA-co-BA) hybrid resin was prepared using lignin as a macromolecular chain transfer agent, showing improved tensile strength and higher Young's modulus compared to pure resin. This research provides a new approach for utilizing waste biomass for high-value applications and serves as a reference for designing new materials for coatings or adhesives.
Article
Chemistry, Applied
Qian Qian, Zhongyang Luo, Haoran Sun, Qi Wei, Jingkang Shi, Simin Li
Summary: This research aims to investigate the relationship between lignin structure and its depolymerization behavior in order to increase the economic viability of sustainable biorefineries. Optimal organosolv lignin yield above 50% was obtained in three different solvent systems. Compared to hydrolyzed lignin, organosolv lignin has higher purity, wider functional group distribution, more uniform structure, and a lower G/S ratio. The depolymerization of organosolv lignin with a non-noble metal catalyst showed significantly enhanced transetherification and alkylation reactions, resulting in a much higher yield of depolymerized aromatics compared to hydrolyzed lignin.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Energy & Fuels
Youwang Huang, Haiyong Wang, Xinghua Zhang, Qi Zhang, Chenguang Wang, Longlong Ma
Summary: This study proposes the high-value utilization of lignin-rich hydrolysis residue (LIHS) through pyrolysis under CO2 atmosphere in order to improve the techno-economic level and reduce carbon dioxide emission. The thermal decomposition characteristics and kinetics of LIHS under CO2 atmosphere were investigated using distributed activation energy models. The results obtained the values of activation energy and pre-exponential factor, and identified a kinetic compensation effect between them. The developed distributed activation energy model with distributed-fitting method shows good ability in predicting the reaction process.
Review
Polymer Science
Lorenzo Pezzana, Eva Malmstrom, Mats Johansson, Marco Sangermano
Summary: Bio-based monomers are the future of polymer chemistry, driven by the shift towards sustainable materials and processes. Utilizing by-products from industrial processes like pulp and paper production for UV-curing offers a way to reduce waste and pollution, while meeting the growing demand for environmentally friendly alternatives to petroleum-based products.
Article
Energy & Fuels
Shuqi Fang, Xiaoru Wang, Pan Li, Jing Bai, Chun Chang, Xianhua Wang, Jiande Song, Shusheng Pang
Summary: There are limited investigations on pyrolysis characteristics of furfural residue lignin. This study explores the effects of reaction temperature and potassium salt on the pyrolysis products of furfural residue alkali lignin. The results show that as the pyrolysis temperature increases, the char yield decreases while the gas yield increases. The addition of potassium salt affects the char, gas, and bio-oil yields, as well as the condensation and cyclization of benzene rings in the char.
Article
Forestry
Jinyue Wang, Suyun Hou, Ziling Shen, Jialong Wen, Chusheng Qi
Summary: This study successfully isolated double enzymatic lignin from Chinese fir and white birch and investigated their thermal properties. The results showed that Chinese fir and birch lignin had different chemical structures and thermal properties, and their specific heat capacity and thermal conductivity exhibited a positive linear relationship. Chinese fir lignin had better thermal stability and higher carbon residue.
Article
Thermodynamics
Guillermo Martinez-Rodriguez, Amanda L. Fuentes-Silva, Daniel Velazquez-Torres, Martin Picon-Nunez
Summary: This study proposes a comprehensive integration of solar thermal energy based on Pinch Analysis, considering economic evaluation, environmental impact, and DTmin. The results show that the integrated solar thermal system for the dairy process is feasible with zero CO2 emissions.
Article
Biochemistry & Molecular Biology
Suchat Pongchaiphol, Nopparat Suriyachai, Bongkot Hararak, Marisa Raita, Navadol Laosiripojana, Verawat Champreda
Summary: Lignin is a promising alternative to petrochemical precursors for industrial-needed products. Organosolv lignins extracted from different agricultural wastes have different physico-chemical characteristics. These findings provide insights into the further applications of organosolv lignins in chemical, polymer, and material industries.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Biochemistry & Molecular Biology
Eko Setio Wibowo, Byung-Dae Park
Summary: Lignosulfonate, with sulfonate groups, is water-soluble and suitable for various applications. The study investigated the chemical and thermal characteristics of ion-exchanged sodium lignosulfonate (Na-LS) and compared it with industrial kraft lignin derived from softwood and hardwood. Results showed successful conversion of Na-LS to lignosulfonic acid (H-LS) through ion exchange, with H-LS having greater molecular weight and polymeric chains. H-LS also exhibited higher glass temperature (T-g) but faster degradation compared to Na-LS.
Article
Energy & Fuels
Yang Yang, Jikai Zhao, Meng Zhang, Donghai Wang
Summary: Cellulosic bioethanol is produced from non-food biomass feedstocks via biochemical conversion. The leftover lignin in this process can be used to produce solid fuel pellets, which can enhance the overall process economy. This study evaluated the physical, thermochemical, and hygroscopic properties of solid fuel pellets made from corn stover hydrolysis residue. The addition of hydrolysis residue improved pellet durability, mechanical properties, energy density, thermal properties, and water resistance.
Article
Engineering, Chemical
Huan Zhang, Yi Shi, Moying Li, Jianxiong Chen, Yu Xin, Liang Zhang, Zhenghua Gu, Jingcheng Liu, Ren Liu
Summary: In this study, lignin was extracted using a deep eutectic solvent and prepared into lignin nanoparticles through self-assembly. The extracted lignin exhibited different structural characteristics, and efficient pretreatment facilitated the isolation of high-purity lignin fractions. The study laid the groundwork for further development and optimization of lignin recovery technology.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Polymer Science
Mehak Chaudhary, V. R. Sinha
Summary: Lignin is an underutilized biopolymer with promising properties that can be generated as a byproduct from industrial processes. It has potential as a carrier for anticancer drugs and has been explored for its therapeutic effects in other diseases as well. Advances in lignin nanoparticles and modifications have further enhanced its suitability as a drug delivery candidate. This review discusses the scope of lignin as a carrier for anticancer drugs and its potential therapeutic effects in various diseases.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Mengtian Yu, Dongpo He, Yuhang Zhang, Dahao He, Xing Wang, Jinghui Zhou
Summary: The extraction method of lignin greatly influences its properties, with alkali method providing the best UV resistance for sunscreen formulations. Wood waste from Acanthopanax senticosus provides a new application for the treatment of herb residue waste.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)