Biomass & Bioenergy最新文献_第8页

Microbial lipids from municipal solid wastes to advanced aviation and marine e-fuels via catalytic hydrotreatment 通过催化加氢处理从城市固体废物到先进航空和海洋电子燃料的微生物脂质

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-13 DOI: 10.1016/j.biombioe.2025.107866

Athanasios Dimitriadis, Nikos Tourlakidis, Stella Bezergianni

{"title":"Microbial lipids from municipal solid wastes to advanced aviation and marine e-fuels via catalytic hydrotreatment","authors":"Athanasios Dimitriadis, Nikos Tourlakidis, Stella Bezergianni","doi":"10.1016/j.biombioe.2025.107866","DOIUrl":"10.1016/j.biombioe.2025.107866","url":null,"abstract":"<div><div>]The current manuscript investigates the technical feasibility for the production of advanced aviation and marine e-fuels from microbial lipids via hydrotreatment. Two microbial lipids produced from municipal solid wastes (spent coffee grounds and orange peels) using the selected oleaginous yeast of the <em>L. starkey</em> and <em>C. curvatus</em> were tested. Due to the limited microbial lipids availability, the free fatty acid composition (FFA) of the microbial lipids derived from each waste was analyzed, based on which various vegetable oils (palm, flaxseed, olive and pumpkin oil) were blended to formulated the two lipid feeds that match by 82 and 84 % the FFA profile to the original ones. The two simulated feedstocks were hydrotreated in a TRL3 plant targeting to optimize the conversion process via the investigation of various operating windows. The optimum operating window for the examined feeds was found at 330 °C, 83 bar pressure, 1 hr<sup>−1</sup> LHSV and 840 NL/L hydrogen/oil ratio. Hydroprocessing of the simulated feedstocks was able to lead to diesel and jet range hydrocarbons that consists from N-paraffins up to 95 wt%. Upon the identification of the optimal operating window and feedstock, 10 L of total hydrotreated product was produced and fractionated rendering aviation, marine and road transport hydrocarbons. As the hydrogen for the hydrotreatment plant is produced via solar energy, the produced fuels are called electrified fuels (“e-fuels). The produced e-fuels were evaluated according to standard fuel specifications (Jet A1, DMA, EN 590), showing that good quality road transport, marine and aviation e-fuels can be produced via hydroprocessing of microbial lipids.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107866"},"PeriodicalIF":5.8,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Techno-economic and life cycle assessment of CO2 storage using amorphous carbon derived from end-of-life Polyethylene Terephthalate 使用报废聚对苯二甲酸乙二醇酯衍生的无定形碳储存二氧化碳的技术经济和生命周期评估

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-11 DOI: 10.1016/j.biombioe.2025.107864

K. Sivagami , P. Prabakar , A.S Kiran Balaji , Nadavala Siva Kumar , Samarshi Chakraborty , Bandaru Kiran

{"title":"Techno-economic and life cycle assessment of CO2 storage using amorphous carbon derived from end-of-life Polyethylene Terephthalate","authors":"K. Sivagami , P. Prabakar , A.S Kiran Balaji , Nadavala Siva Kumar , Samarshi Chakraborty , Bandaru Kiran","doi":"10.1016/j.biombioe.2025.107864","DOIUrl":"10.1016/j.biombioe.2025.107864","url":null,"abstract":"<div><div>Plastics have become an integral part of our daily life. The advantages and benefits of plastic applications are counterbalanced by its drawbacks. Governments across the world are struggling to repurpose or value used plastic products. To minimize greenhouse gas emissions into the atmosphere, this study aims to recover carbon from waste Polyethylene Terephthalate (PET) based plastics into value-added products. The study also aims to model and simulate the feasibility of converting End of Life PET(EOL-PET) to porous carbon for CO<sub>2</sub> capture. Pyrolysis is regarded as one of the most effective methods for turning long-chain hydrocarbons into low-molecular-weight compounds. EOL-PET can be converted to value-added products like pyrolysis oil and porous carbon. In this study, non-recyclable PET plastics are pyrolyzed into gaseous, liquid, and solid/ash products. EOL-PET is carbonized, and the carbonized PET is heated with KOH (activating agent) in the presence of N<sub>2</sub>. The KOH method improves the textural properties of the porous carbon and the CO<sub>2</sub> uptake and increases the efficiency of adsorption. Simulated the complete process of the conversion of Waste PET into porous carbon and that porous carbon used as an adsorbent for CO<sub>2</sub> storage using Aspen Plus. Performed the detailed techno-economic feasibility using Aspen Plus, obtained the pay-back period for derived porous carbon from waste PET and CO<sub>2</sub> storage is 2.5 years. Performed the detailed environmental feasibility analysis using OpenLCA, it resulted that the Global warming potential of porous carbon is higher than Carbon derived from various sources like woody biomass, Activated Carbon (AC) from olive waste cakes, and granulated AC.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107864"},"PeriodicalIF":5.8,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating maize as a sustainable energy crop for bioethanol production: Delineating cultivation, utilization, biotechnological and environmental perspectives 研究玉米作为生物乙醇生产的可持续能源作物：描述栽培，利用，生物技术和环境的观点

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-11 DOI: 10.1016/j.biombioe.2025.107867

Gurkanwal Kaur , Mehak Sethi , Veena Devi , Amanpreet Kaur , Harmandeep Kaur , Dharam Paul Chaudhary

{"title":"Investigating maize as a sustainable energy crop for bioethanol production: Delineating cultivation, utilization, biotechnological and environmental perspectives","authors":"Gurkanwal Kaur , Mehak Sethi , Veena Devi , Amanpreet Kaur , Harmandeep Kaur , Dharam Paul Chaudhary","doi":"10.1016/j.biombioe.2025.107867","DOIUrl":"10.1016/j.biombioe.2025.107867","url":null,"abstract":"<div><div>Biofuels are becoming viable alternatives to fossil fuels in the recent times due to rapidly declining supply of the latter. Ethanol production using agricultural feedstock is promoted to meet the increasing energy demands, mitigate environmental challenges presented by conventional fossil fuels and boost economic conditions in agro-energy sector. Among cereals, maize holds a prominent position in terms of global production, after wheat and rice, and is a fundamental ingredient in several agro-based industries. Including maize as a raw material in the production chain of biofuels requires a thorough analysis of market aspects, locally and globally, while gaining a proper understanding of the energy matrix involved in the technical process. This work proposes the inclusion of maize as a raw material for first- and second-generation ethanol production and highlights its role in environmental, social, economic, and energy-based development. The production and utilization of maize crop by the top global producers, the United States, for instance, and the rapidly growing economies, e.g., India, have been studied with an aim to compare the progress and strategies adopted to reduce dependence on imported petroleum products. Recent trends in maize cultivation and export, its utilization pattern, bioprocess defining factors and their optimization, microbial strain improvement, improved fermentation technologies, and various other strategies to enhance maize bioethanol production systems have been discussed. Further, this study discusses the removal of bottlenecks in bioethanol expansion, blending policies and biotechnological advances for improving biofuel production.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107867"},"PeriodicalIF":5.8,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Engineering biomass-derived hard carbon for secondary batteries and supercapacitors. Are we there yet? A comprehensive review 用于二次电池和超级电容器的工程生物质衍生硬碳。我们到了吗？全面回顾

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-10 DOI: 10.1016/j.biombioe.2025.107844

Unnikrishna Menon , Brajesh Kumar Dubey , Amit Kumar

{"title":"Engineering biomass-derived hard carbon for secondary batteries and supercapacitors. Are we there yet? A comprehensive review","authors":"Unnikrishna Menon , Brajesh Kumar Dubey , Amit Kumar","doi":"10.1016/j.biombioe.2025.107844","DOIUrl":"10.1016/j.biombioe.2025.107844","url":null,"abstract":"<div><div>Addressing the global energy demand requires innovative solutions, particularly in light of rising atmospheric CO<sub>2</sub> levels and the imperative to transition away from coal. Carbonaceous materials obtained from biomass waste streams (known as hard carbons) show considerable potential owing to their abundance and beneficial characteristics for energy storage devices. However, there is a lack of understanding of the complex and heterogeneous nature of biomass. This hinders industrialists from making well-informed decisions on material selection. This review explores the progression of waste biomass-derived hard carbon materials tailored as a sustainable alternative to conventional carbon sources. Additionally, the significance of usually disregarded qualitative analysis of biocarbon, including H/C and O/C ratio, and the structural heterogeneity of similar waste biomass feedstocks following different heat treatment methods are addressed. These compositional changes lead to variations in electrochemical performance. The correlation between material properties and electrochemical performance is established through a comprehensive analysis of synthesis methodologies and resulting structural modifications. Also, various recent publications report specific capacitance of biomass-based hard carbon prediction using Machine Learning (ML). However, this review identifies certain limitations in existing approaches. These limitations are also discussed in detail, contributing to new knowledge in the field. Finally, the challenges in storage mechanisms and perspectives on future research directions with an insight into ML influencing the performance of hard carbon-based electrodes are examined.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107844"},"PeriodicalIF":5.8,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Techno-economic assessment of a plant for the upgrading of MSW biogas to synthetic natural gas by thermocatalytic methanation 某城市生活垃圾沼气热催化甲烷化制合成气装置技术经济评价

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-10 DOI: 10.1016/j.biombioe.2025.107871

P. Sanz-Monreal, V.D. Mercader, P. Aragüés-Aldea, P. Durán, E. Francés, J. Herguido, J.A. Peña

{"title":"Techno-economic assessment of a plant for the upgrading of MSW biogas to synthetic natural gas by thermocatalytic methanation","authors":"P. Sanz-Monreal, V.D. Mercader, P. Aragüés-Aldea, P. Durán, E. Francés, J. Herguido, J.A. Peña","doi":"10.1016/j.biombioe.2025.107871","DOIUrl":"10.1016/j.biombioe.2025.107871","url":null,"abstract":"<div><div>This study evaluates the techno-economic feasibility of a plant designed to produce synthetic natural gas (SNG) from biogas through direct catalytic methanation. The proposed facility is simulated with <em>Aspen Plus</em>® v14, using a comprehensive approach that covers the entire process, from biogas pretreatment to the production of the final product. The installation aims to contribute to the development of <em>Power-to-Gas</em> (<em>Power-to-Methane</em>) strategy for decarbonization.</div><div>The plant, to be located in northeastern Spain, operates at an industrial scale with a production capacity of approximately 1100 Nm<sup>3</sup>/h of SNG, obtained from a 1425 Nm<sup>3</sup>/h biogas plant. The process includes five main stages to meet Spanish gas quality standards for grid injection: desulfurization, using amines for sulfur removal; electrolysis, for the generation of renewable hydrogen; thermocatalytic methanation, which combines CO<sub>2</sub> from the biogas with hydrogen to enrich the methane content; dehydration, to meet SNG moisture specifications; and cogeneration, intended for the joint production of electricity and steam to meet the plant's energy demands.</div><div>A detailed analysis of investment costs (CAPEX) and operational expenses (OPEX) is conducted, identifying the key factors influencing the project's profitability. The economic assessment indicates a total capital investment of 21.83 M€ and operational expenses nearly 8 M€ annually. The profitability threshold for the base scenario is estimated at 91.75 €/MWh, exceeding the 2023 natural gas market average in the Iberic peninsula (39.11 €/MWh), highlighting the current economic challenges of SNG production.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107871"},"PeriodicalIF":5.8,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural characterization of enzymatic lignin from the saccharification of steam-exploded Eucalyptus globulus bark 气爆桉树皮糖化酶促木质素的结构表征

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-10 DOI: 10.1016/j.biombioe.2025.107884

Sandra Magina, Dmitry V. Evtuguin

{"title":"Structural characterization of enzymatic lignin from the saccharification of steam-exploded Eucalyptus globulus bark","authors":"Sandra Magina, Dmitry V. Evtuguin","doi":"10.1016/j.biombioe.2025.107884","DOIUrl":"10.1016/j.biombioe.2025.107884","url":null,"abstract":"<div><div>Enzymatic lignin (EL) was assessed by acidolysis from the lignocellulosic residue obtained after enzymatic saccharification of steam exploded <em>Eucalyptus globulus</em> bark. The structural characteristics of the obtained dioxane lignin were evaluated by wet chemistry and spectroscopy techniques (Fourier transform infrared spectroscopy, FTIR), 1D and 2D nuclear magnetic resonance (NMR) spectroscopy, and molecular weight by size exclusion chromatography (SEC). The main structural differences expressed per 100 phenyl propane units (PPU) between the dioxane lignins from the initial bark and the cellolignin residue obtained by enzymatic saccharification of the steam-exploded bark were the decrease in number of β-<em>O</em>-4′ structures (52 <em>vs</em> 40/100 PPU), increased amounts of β-β′ and β-5′ structures (11 <em>vs</em> 13/100 PPU) and increased molecular weight (Mw of 2400 Da vs 2700 Da) of the latter. A part of syringyl units in EL was converted into gallate-type structures as a result of partial demethoxylation of syringyl structures via homolysis that occurred during steam explosion pre-treatment.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107884"},"PeriodicalIF":5.8,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pyrolysis of oleaster seed under non-isothermal conditions to assess as bioenergy potential: Kinetic, thermodynamic and master plot analyses 油橄榄籽在非等温条件下热解作为生物能源潜力的评估：动力学、热力学和主图分析

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-09 DOI: 10.1016/j.biombioe.2025.107861

Meltem Kizilca Coruh

{"title":"Pyrolysis of oleaster seed under non-isothermal conditions to assess as bioenergy potential: Kinetic, thermodynamic and master plot analyses","authors":"Meltem Kizilca Coruh","doi":"10.1016/j.biombioe.2025.107861","DOIUrl":"10.1016/j.biombioe.2025.107861","url":null,"abstract":"<div><div>This study aims to evaluate the bioenergy potential of oleaster seed (OS) and to determine the pyrolysis characteristics and kinetics required for the efficient design and optimization of thermochemical processes for bioenergy production. To achieve this, the pyrolysis processes of OS were extensively analyzed using the thermogravimetric analysis (TGA) method. Thermogravimetric analyses were conducted in a nitrogen (N<sub>2</sub>) atmosphere at heating rates of 5, 10, 15, and 20 K min<sup>−1</sup>, from room temperature up to 1173 K. Through these analyses, the decomposition behavior and bioenergy potential of OS were evaluated. For kinetic analysis, various iso-conversion models, including Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), Starink, and Tang, were employed to calculate kinetic parameters such as activation energy and pre-exponential factor, as well as thermodynamic parameters like enthalpy (<em>ΔH</em>), entropy (<em>ΔS</em>), and Gibbs free energy (<em>ΔG</em>). To determine the reaction mechanism, the Coats-Redfern (CR) method and the master plot approach were utilized. The most suitable model to describe the pyrolytic decomposition process is the chemical kinetics model (F<sub>3</sub>).</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107861"},"PeriodicalIF":5.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the potential for recycling sewage sludge in biodiesel using deep eutectic solvents: A proposal of circular economy based on life cycle assessment approach 探讨深层共晶溶剂在生物柴油中回收污泥的潜力：基于生命周期评估方法的循环经济建议

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-09 DOI: 10.1016/j.biombioe.2025.107845

Brayan S. Moreno-Caballero , Pasiano Rivas-García , Alejandro Estrada-Baltazar , Juan P. Paniagua-Martínez , Jean-Marc Leveque , José J. Cano-Gómez

{"title":"Exploring the potential for recycling sewage sludge in biodiesel using deep eutectic solvents: A proposal of circular economy based on life cycle assessment approach","authors":"Brayan S. Moreno-Caballero , Pasiano Rivas-García , Alejandro Estrada-Baltazar , Juan P. Paniagua-Martínez , Jean-Marc Leveque , José J. Cano-Gómez","doi":"10.1016/j.biombioe.2025.107845","DOIUrl":"10.1016/j.biombioe.2025.107845","url":null,"abstract":"<div><div>This study presents an innovative cleaner production strategy for the energetic valorization of greasy wastewater sludge (WS) through biodiesel synthesis, using choline chloride (ChCl)-based deep eutectic solvents (DES) with p-toluenesulfonic acid (PTSA) and oxalic acid (OA) as green catalysts. Biodiesel production was evaluated using two approaches: (i) a one-step cleaner production process with different ChCl:PTSA and ChCl:OA ratios, and (ii) a conventional two-step method (esterification-transesterification) with H<sub>2</sub>SO<sub>4</sub> and CaO as catalysts. The environmental impact of both production methods was assessed via life cycle assessment (LCA). Yields of up to 53 % were achieved in extracting grease from WS. The conventional two-step process showed biodiesel production yields of 88 % at 9 h, while the one-step process showed yields of up to 98 % with ChCl:PTSA and 59 % with ChCl:OA at molar ratios of (0.1 and 0.2) DES:FFA, and (4 and 6) hours, respectively. ChCl:PTSA emerged as the superior catalyst, providing higher energy efficiency, reduced reaction times, and up to a 56 % reduction in greenhouse gas (GHG) emissions compared to the two-step method. Its application resulted in a 64 % reduction in GHG emissions compared to conventional diesel, mainly due to reduced energy demands during fat extraction and reaction processes. However, further optimization is necessary to minimize methanol and energy consumption during esterification/transesterification, as these factors account for 50 % and 20 % of total GHG emissions, respectively, when using DES-based biodiesel production. This work highlights the potential of DES as a sustainable and energy-efficient alternative for biodiesel production, paving the way for greener solutions in WS valorization.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107845"},"PeriodicalIF":5.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing xylose fermentation to maximize net energy gain of lime-pretreated wheat straw by delayed fed-batch simultaneous saccharification and fermentation 采用延迟补料分批同时糖化发酵的方法强化木糖发酵，最大限度地提高石灰预处理麦秸的净能量增益

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-09 DOI: 10.1016/j.biombioe.2025.107865

Wan-ying Qiu, Chengyu Dong, Jing-jing Guo, Bo Xia, Lujiang Xu, Zhen Fang

{"title":"Enhancing xylose fermentation to maximize net energy gain of lime-pretreated wheat straw by delayed fed-batch simultaneous saccharification and fermentation","authors":"Wan-ying Qiu, Chengyu Dong, Jing-jing Guo, Bo Xia, Lujiang Xu, Zhen Fang","doi":"10.1016/j.biombioe.2025.107865","DOIUrl":"10.1016/j.biombioe.2025.107865","url":null,"abstract":"<div><div>Delayed fed-batch simultaneous saccharification and fermentation (SSF) of lime-pretreated wheat straw was carried out with a wild type yeast (<em>i.e., Candida shehatae</em>) to produce high titer ethanol. Calcium ions in lime-pretreated wheat straw were precipitated by <em>pH</em> controlling agent (<em>i.e.,</em> sulfuric acid) to reduce inhibition of inorganic ions on yeast fermentation. It was found that ethanol concentration (∼35 g L<sup>−1</sup>) did not increase as solid loading of substrate increased from 15 % to 20 % in batch SSF. However, in delayed fed-batch SSF, the feeding time of substrate (96 h) was postponed until after the inoculation time (18 h) resulting in a 74 % reduction in residual xylose concentration and a 54.3 % increase in ethanol concentration (54 g L<sup>−1</sup>). Compared to batch SSF, separation energy of ethanol was decreased by 32.3 % to 977.3 MJ/ton wheat straw in delayed fed-batch SSF, and net energy gain was increased by 20.1 % to 3525.7 MJ/ton wheat straw.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107865"},"PeriodicalIF":5.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ash thermomechanical properties and combustion characteristics during Co-combustion of anthracite and biomass for CFB combustors 无烟煤与生物质在循环流化床燃烧室共燃过程中灰分热力学特性及燃烧特性

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-09 DOI: 10.1016/j.biombioe.2025.107868

Shangkun Quan , Yijie Zeng , Yukun Wu , Ryang-Gyoon Kim , Zhouhang Li , Yong Han , Junjie Li , Chung-hwan Jeon , Xing Zhu , Hua Wang , Dongfang Li

{"title":"Ash thermomechanical properties and combustion characteristics during Co-combustion of anthracite and biomass for CFB combustors","authors":"Shangkun Quan , Yijie Zeng , Yukun Wu , Ryang-Gyoon Kim , Zhouhang Li , Yong Han , Junjie Li , Chung-hwan Jeon , Xing Zhu , Hua Wang , Dongfang Li","doi":"10.1016/j.biombioe.2025.107868","DOIUrl":"10.1016/j.biombioe.2025.107868","url":null,"abstract":"<div><div>Co-firing biomass with coal in circular fluidized bed combustors is a promising method to reduce carbon emissions. In this study, the ash behavior and combustion characteristics of anthracite, wood pellet (WP) and their blends were thoroughly investigated by thermomechanical and thermogravimetric analysis, respectively. The results show that the fusibility of anthracite ash is significantly enhanced with the addition of WP ash due to the formation of low-melting-point KAlSi<sub>2</sub>O<sub>6</sub>, as a result of the interaction between SiO<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub> from anthracite ash and K<sub>2</sub>O in WP ash. The thermomechanical analysis demonstrated that T25 decreased from 1227 °C to 1108 °C for the ash blend formulated with 50 % WP ash. The addition of WP reduced the combustion initial and final temperature of anthracite. Antagonism was minimized when WP was added at 25 %, whereas synergism was strongest around 580 °C when added at 50 % WP. The apparent activation energies calculated via four iso-conversional methods (Flynn-Wall-Ozawa [FWO], distributed activation energy model [DAEM], Starink, and Kissinger-Akahira-Sunose [KAS]) exhibited minimum values of 91 kJ/mol, 82.23 kJ/mol, 86.07 kJ/mol and 82.23 kJ/mol at 25 % WP addition across all blending ratios, corresponding to the respective models. This paper provides fundamental guidances for biomass co-firing technology.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107868"},"PeriodicalIF":5.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0