Biomass & Bioenergy最新文献_第10页

Evaluation of chemical and thermochemical pretreatment technologies for sugarcane trash: Energy efficiency and environmental impacts

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-02-26 DOI: 10.1016/j.biombioe.2025.107732

Nopparat Suriyachai , Pavarisa Chaipet , Santi Chuetor , Marisa Raita , Wanwipa Siriwatwechakul , Navadol Laosiripojana , Verawat Champreda

{"title":"Evaluation of chemical and thermochemical pretreatment technologies for sugarcane trash: Energy efficiency and environmental impacts","authors":"Nopparat Suriyachai , Pavarisa Chaipet , Santi Chuetor , Marisa Raita , Wanwipa Siriwatwechakul , Navadol Laosiripojana , Verawat Champreda","doi":"10.1016/j.biombioe.2025.107732","DOIUrl":"10.1016/j.biombioe.2025.107732","url":null,"abstract":"<div><div>Sugarcane trash (ST) shows promise as an underused biomass from sugar biorefineries. Pretreatment processes are necessary to convert the complex ST structure into valorized products. This study compared ST sugar recovery, energy efficiency, and waste generation performances of five pretreatment techniques: dilute acid (ACD), alkaline sodium hydroxide (AKL-NaOH), alkaline hydrogen peroxide (AKL-H<sub>2</sub>O<sub>2</sub>), liquid hot water (LHW), and organosolv (ORG). At the optimal temperature, time, and catalyst dosage maximum glucose recovery yields ranged from 70.84 % to 87.57 % with LHW > ORG > AKL-H<sub>2</sub>O<sub>2</sub> > AKL-NaOH > ACD, resulted from alterations in biomass microstructure and crystallinity. The energy efficiency ranged from 0.200 to 0.693 kg sugar recovery/kWh, with comparable efficiency achieved by ORG, LHW, and ALK-H<sub>2</sub>O<sub>2</sub> but markedly lower than ACD and AKL-NaOH. The waste generation factor ranged from 0.037 to 3.462 kg of waste generation/kg of sugar with the lowest for LHW process followed by ORG, ACD, AKL-NaOH, and AKL-H<sub>2</sub>O<sub>2</sub>, respectively. The LHW pretreatment at 180 °C for 30 min was chosen as a promising method in terms of glucose recovery and waste generation with moderate energy efficiency. The LHW process also generated relatively low inhibitory by-products from sugar dehydration although with the presence of high organic acid levels in the liquid phase. Our works provides a platform for using ST as starting material in biorefineries.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107732"},"PeriodicalIF":5.8,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507510","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

Aqueous phase hydrogenolysis of glycerol with in-situ hydrogen generation over Ni catalysts supported on activated carbon: Effects of nickel loading and base addition

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-02-26 DOI: 10.1016/j.biombioe.2025.107744

R. Raso, L. García, J. Ruiz, M. Oliva, J. Arauzo

{"title":"Aqueous phase hydrogenolysis of glycerol with in-situ hydrogen generation over Ni catalysts supported on activated carbon: Effects of nickel loading and base addition","authors":"R. Raso, L. García, J. Ruiz, M. Oliva, J. Arauzo","doi":"10.1016/j.biombioe.2025.107744","DOIUrl":"10.1016/j.biombioe.2025.107744","url":null,"abstract":"<div><div>The present work studied the influences of nickel loading and KOH addition on the aqueous phase hydrogenolysis of glycerol over nickel supported on activated carbon (Ni/AC) catalysts prepared by the incipient wetness impregnation method and without external hydrogen addition in a continuous operation. It has been observed that the calcination stage of the catalytic precursor reduces nickel oxide to dispersed nickel metal crystallites, making catalyst activation with hydrogen unnecessary. This process predominantly yields liquid products, with low gas production under the studied conditions. Among the produced liquids, acetol and 1,2-propanediol are the major components. Furthermore, the addition of a base (KOH) is beneficial both in terms of significantly increasing glycerol conversion and the yield to liquids and also to improve selectivity towards 1,2-propanediol due to the participation of the basic route. The best catalytic activity was achieved using the catalyst with 10 wt% of Ni and added base with the highest glycerol conversion close to 40 % and selectivity to 1,2-propanediol greater than 70 %.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107744"},"PeriodicalIF":5.8,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488953","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

Carbonization and activation of leather buffing dust to a biocarbon and its conductivity

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-02-25 DOI: 10.1016/j.biombioe.2025.107742

Jaroslav Stejskal , Marek Jurča , David Škoda , Tomáš Sáha , Dušan Kopecký , Miroslava Trchová , Jan Prokeš

{"title":"Carbonization and activation of leather buffing dust to a biocarbon and its conductivity","authors":"Jaroslav Stejskal , Marek Jurča , David Škoda , Tomáš Sáha , Dušan Kopecký , Miroslava Trchová , Jan Prokeš","doi":"10.1016/j.biombioe.2025.107742","DOIUrl":"10.1016/j.biombioe.2025.107742","url":null,"abstract":"<div><div>Buffing dust, one of the collagenous wastes produced in the footwear industry, was carbonized at 400–1200 °C in an inert atmosphere to microfibrous nitrogen-containing biocarbons enriched with chromium. The evolution of molecular microstructure with increasing carbonization temperature or exposure time was followed with FTIR and Raman spectra. The resistivity of the powdered products was determined by van der Pauw four-point method and recorded as a function of applied pressure in the 0.1–10 MPa range. The highest conductivity 13.9 S cm<sup>−1</sup> at 10 MPa was found after the carbonization at 1200 °C. The mechanical properties, such as the change of sample volume with applied pressure, are also discussed. The specific surface area was low, <em>ca</em> 5–7 m<sup>2</sup>g<sup>−1</sup>, independent of the carbonization temperature. This parameter was enhanced by the chemical activation with ammonium peroxydisulfate or potassium hydroxide by two orders of magnitude, while the conductivity decreased at the same time by less than one order of magnitude.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107742"},"PeriodicalIF":5.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143478962","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

Optimizing torrefaction of banana waste (peels and rachis) for sustainable biocoal production in rural communities

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-02-25 DOI: 10.1016/j.biombioe.2025.107726

Igor F. Mendonça , Gabriel S. do Vale , Rafael B.W. Evaristo , Rômulo C. Dutra , Pedro Paulo de Oliveira Rodrigues , Edgar A. Silveira , Grace Ghesti

{"title":"Optimizing torrefaction of banana waste (peels and rachis) for sustainable biocoal production in rural communities","authors":"Igor F. Mendonça , Gabriel S. do Vale , Rafael B.W. Evaristo , Rômulo C. Dutra , Pedro Paulo de Oliveira Rodrigues , Edgar A. Silveira , Grace Ghesti","doi":"10.1016/j.biombioe.2025.107726","DOIUrl":"10.1016/j.biombioe.2025.107726","url":null,"abstract":"<div><div>This study investigates the optimization of banana residue's torrefaction, specifically rachis and peel, by evaluating their potential as biocoal. This research aligns with circular economy principles, aiming to reduce waste and enhance the agro-industrial production chain. It also seeks to benefit small-scale farmers, particularly in remote areas without access to advanced technologies or biorefinery systems. Torrefaction conditions were optimized for biocoal quality and combustion emissions reduction using Response Surface Methodology, evaluating temperature (155–325 °C), time (12–68 min), and a 10 °C min<sup>−1</sup> heating rate under an inert atmosphere. Analytical assessments included yields, proximate, ultimate and calorific (Higher Heating Value, HHV) analyses, and combustion emissions estimations (CO, CO<sub>2</sub>, and NOx). Results demonstrated solid yields ranging from 92.02 to 52.62 % for rachis and 91.92–56.46 % for peel, while HHVs ranged from 15.61 to 17.26 MJ kg<sup>−1</sup> and 17.11–20.16 MJ kg<sup>−1</sup>, respectively. The optimized torrefaction conditions were 255 °C for 60 min for rachis and 249 °C for 20 min for peel. These conditions resulted in an SY of 63.21 % for rachis and 72.15 % for peel, with HHVs of 17.01 MJ kg<sup>−1</sup> and 19.87 MJ kg<sup>−1</sup> and ash content of 15.78 % and 14.92 %, respectively, suggesting greater energy yield for biofuel application. High ash content suggests the need for pre-treatment techniques or material blending to enhance the usability of biocoal as biofuel. CO<sub>2</sub> emissions for the combustion of optimized biocoal were 1310.75 for peel and 1142.78 kg ton<sup>−1</sup> for rachis, with the potential for reduced carbon intensity compared to conventional fuels.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107726"},"PeriodicalIF":5.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143478961","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

IEA Bioenergy: Update 76

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-02-25 DOI: 10.1016/j.biombioe.2025.107623

David Styles , Göran Berndes

引用次数: 0

Techno-economic evaluation of pulp and paper mill derived biochar, liquid and gaseous biofuel precursors: A British Columbia case study

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-02-25 DOI: 10.1016/j.biombioe.2025.107677

Murlidhar Gupta, Elisa Dorn, Leslie Nguyen, Andrew McFarlan

{"title":"Techno-economic evaluation of pulp and paper mill derived biochar, liquid and gaseous biofuel precursors: A British Columbia case study","authors":"Murlidhar Gupta, Elisa Dorn, Leslie Nguyen, Andrew McFarlan","doi":"10.1016/j.biombioe.2025.107677","DOIUrl":"10.1016/j.biombioe.2025.107677","url":null,"abstract":"<div><div>Canada is home to one of the largest concentrations of pulp and paper (P&P) mills in the world. With declining demand for traditional P&P products and tightening environmental regulations, these mills are diversifying to produce a range of biorefinery products. Mill residue derived solid biochar, liquid and gaseous biofuel precursors are potential biorefinery products that can help mills sustain operations, as well as meet emission reduction targets in other “hard-to-decarbonize” industries such as petroleum refining and iron and steelmaking. This study undertook a techno-economic analysis of fast pyrolysis of wood residues to produce low-carbon intensity biofuels at operating P&P mills in British Columbia (BC). Aspen Plus® models for fast pyrolysis of wood residue with a novel three-stage quench and heat recovery were integrated into an Excel-based cost estimation tool, which was used to perform techno-economic analysis (TEA) for ablative and fluid-bed reactor configurations. The ablative case outperformed the fluid-bed case, under baseline conditions of 4 dry t/h capacity, 60 $/dry t wood residue, 800 $/t char, WCS crude and RNG pricing for the bio-oil and off-gas respectively. TEA showed a net present value (NPV) of USD 4.30 million, and a bio-oil minimum selling price (MSP) of 7.86 USD/GJ for the ablative pyrolysis case, while the fluid-bed case was unprofitable, requiring a bio-oil MSP of 23.47 USD/GJ. Lowering feedstock cost and increasing biochar and liquid price increased the profitability of both pyrolysis cases, whereas increasing throughput capacity increased profitability in the ablative case but lowered it in the fluid-bed case.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"195 ","pages":"Article 107677"},"PeriodicalIF":5.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519544","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 conversion and selectivity control in liquid-film dielectric barrier discharge plasma for bio-oil upgrading

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-02-25 DOI: 10.1016/j.biombioe.2025.107738

Yadi Liu , Xiaojiao Wu , Ying Sun , Xiaolong Wang , Tao Shao

{"title":"Enhancing conversion and selectivity control in liquid-film dielectric barrier discharge plasma for bio-oil upgrading","authors":"Yadi Liu , Xiaojiao Wu , Ying Sun , Xiaolong Wang , Tao Shao","doi":"10.1016/j.biombioe.2025.107738","DOIUrl":"10.1016/j.biombioe.2025.107738","url":null,"abstract":"<div><div>Green upgrading of bio-oils significantly enhances their potential as future energy alternatives. Nonthermal plasma hydrodeoxygenation technology, an environmentally friendly and sustainable solution for upgrading bio-oils, bypasses the high temperatures, high pressures, and catalysts typically required. However, the impact of plasma-generated particles on the process remains insufficiently understood, limiting the effectiveness of deoxygenation efficiency and calorific value enhancement. Here we propose an innovative hydrodeoxygenation mechanism for plasma upgrading of bio-oil model compound (guaiacol), emphasizing the critical role of H radicals and electron energy in enhancing guaiacol conversion and tailoring product selectivity, respectively. Our findings, derived from an integrated approach of reactive molecular dynamics and density functional theory, complemented by experimental validation, reveal that H radicals substantially extend the oxygen-containing chemical bonds. This extension, alongside a marked reduction in the energy barriers for the cleavage of O-CH<sub>3</sub>, C-OCH<sub>3</sub>, and C-OH bonds by 58.2 %, 72.1 %, and 77.1 %, respectively, facilitates the conversion, yielding catechol as the main product. Moreover, within Ar plasma, nearly 80 % of electrons have bond-breaking energy, a figure that increases from 31.07 % to 74.41 % in H<sub>2</sub> plasma with rising reduced electric field. Importantly, Ar plasma maintains high efficiency in cleaving C-OCH<sub>3</sub> and C-OH bonds, driving the transition of primary products from catechol to phenol, anisole, and potentially to aromatic hydrocarbons. These insights offer guidance for optimizing reaction conditions in plasma bio-oil upgrading and contribute to the efficient utilization of biomass resources and environmental protection.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107738"},"PeriodicalIF":5.8,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143478963","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

Process model and comparative life cycle assessment (LCA) of a biorefinery concept based on fractionated subcritical water hydrolysis for sugar cane trash valorization

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-02-24 DOI: 10.1016/j.biombioe.2025.107740

Gabriel Morales-Gutiérrez, Víctor Marulanda-Cardona

{"title":"Process model and comparative life cycle assessment (LCA) of a biorefinery concept based on fractionated subcritical water hydrolysis for sugar cane trash valorization","authors":"Gabriel Morales-Gutiérrez, Víctor Marulanda-Cardona","doi":"10.1016/j.biombioe.2025.107740","DOIUrl":"10.1016/j.biombioe.2025.107740","url":null,"abstract":"<div><div>Subcritical water hydrolysis, which incorporates depolymerization, reaction and separation of sugars from biomass, has been proposed as an alternative to conventional hydrolysis. Since this process does not require chemicals, it could potentially lead to simpler biorefinery schemes. Yet, high water to biomass (S/F) mass ratios reported in experimental studies could limit technical feasibility for scaling-up purposes, as well as resulting in an inferior environmental performance due to the production of highly diluted sugar fractions. Therefore, in this study a biorefinery model based on fractionated subcritical water hydrolysis of sugar cane trash was proposed and simulated for (S/F) ratios in the range 7.5–24, based on previously reported experimental results and simulation studies, to assess the effect of mass and energy inputs in the environmental performance when compared to the conventional acid-enzymatic process by means of a gate-to-gate LCA assessment. LCA results showed inferior environmental performance of the proposed process with (S/F) of 12 and 24, ratios considerably lower than those usually employed in experimental studies, which is mainly the result of the energy requirements as steam production. Yet, a (S/F) ratio of 7.5 showed an improved environmental performance in 12 out of 18 categories assessed, which was attributed not only to the decreased energy consumption but also to the elimination of additional environmental burdens such as the production of chemicals and enzymes. These results suggest further experimental research should focus on reducing (S/F) ratios in experimental studies in order to advance the technical feasibility of the proposed process.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107740"},"PeriodicalIF":5.8,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bio-aromatics: Revolutionizing the integrated biomass and plastic waste valorization for high-value aromatic hydrocarbons via bifunctional catalytic pathways of bio-syngas conversion

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-02-23 DOI: 10.1016/j.biombioe.2025.107736

Maria Saif, Rubén Blay-Roger, Muhammad Asif Nawaz, Luis F. Bobadilla, Tomas Ramirez-Reina, J.A. Odriozola

{"title":"Bio-aromatics: Revolutionizing the integrated biomass and plastic waste valorization for high-value aromatic hydrocarbons via bifunctional catalytic pathways of bio-syngas conversion","authors":"Maria Saif, Rubén Blay-Roger, Muhammad Asif Nawaz, Luis F. Bobadilla, Tomas Ramirez-Reina, J.A. Odriozola","doi":"10.1016/j.biombioe.2025.107736","DOIUrl":"10.1016/j.biombioe.2025.107736","url":null,"abstract":"<div><div>Aromatic hydrocarbons play a pivotal role in various industrial applications, serving as essential building blocks to produce polymers, resins, and specialty chemicals. Traditionally, their synthesis has been reliant on fossil fuels, raising concerns about environmental sustainability and resource depletion. However, recent advancements in the field have paved the way for a paradigm shift, with a focus on biomass-derived synthesis gas as a renewable and environmentally friendly feedstock. This review explores innovative shortcuts in the synthesis of aromatic hydrocarbons, a key area of research that holds promise for a more sustainable and efficient future. As we delve into the intricacies of biomass-derived synthesis gas conversion, we will examine breakthroughs in catalyst development, process optimization, and integrated approaches. By scrutinizing these advancements, we aim to provide a comprehensive overview of the current state of the art, highlighting both challenges and opportunities for further exploration. The urgency of addressing environmental concerns and the growing demand for renewable alternatives underscore the importance of reevaluating the methodologies. The unique characteristics of biomass-derived synthesis gas coupled with co-gasification processes present an intriguing avenue for redefining the landscape of aromatic hydrocarbon synthesis. Through this exploration, we seek to unravel the complexities of these innovative shortcuts, offering insights that may contribute to a more sustainable and greener future for the chemical industry.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107736"},"PeriodicalIF":5.8,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471738","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

A parametric study of particle size influence on sewage sludge-derived hydrochar and coal char co-gasification: Reactivity and carbon conversion analysis 粒度对污水污泥衍生的水炭和煤炭联合气化影响的参数研究：反应性与碳转化分析

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-02-22 DOI: 10.1016/j.biombioe.2025.107715

Azhar Ali Laghari , Asma Leghari , Akash Kumar , Lata Kumari , Muhammad Rizwan , Qurat-ul-ain Abro , Memon Kashif Ali , Yongheng Shen , Qingxia Guo

{"title":"A parametric study of particle size influence on sewage sludge-derived hydrochar and coal char co-gasification: Reactivity and carbon conversion analysis","authors":"Azhar Ali Laghari , Asma Leghari , Akash Kumar , Lata Kumari , Muhammad Rizwan , Qurat-ul-ain Abro , Memon Kashif Ali , Yongheng Shen , Qingxia Guo","doi":"10.1016/j.biombioe.2025.107715","DOIUrl":"10.1016/j.biombioe.2025.107715","url":null,"abstract":"<div><div>Sewage sludge (SS) poses significant environmental and socio-economic challenges due to its high moisture content and limited disposal options. Hydrothermal carbonization (HTC) has been identified as an effective pretreatment method to enhance the stability and reactivity of hydrochar (HC) for energy applications. This study investigates the co-gasification behavior of pyrolyzed HC derived from SS and coal char in CO2 environments, with a focus on the influence of temperature (850 °C, 900 °C, and 950 °C) and particle size (35 μm, 110 μm, 250 μm, and 430 μm) on gasification reactivity and carbon conversion. Experimental results show that smaller particles (35 μm) exhibited the highest reactivity due to their larger surface area-to-volume ratio, achieving a gasification rate of 0.010945 s⁻<sup>1</sup> at 950 °C. Increasing the temperature significantly enhanced carbon conversion, with conversion rates accelerating particularly at 950 °C during the initial phases. Coal char demonstrated rapid thermal degradation, while HC displayed superior thermal stability and reduced reactivity at higher temperatures due to its more condensed carbon structure. Notably, HC concentrations (15 %) improved overall reactivity compared to lower concentrations (5 %), emphasizing the synergistic effects of co-gasification. This study highlights the critical role of temperature and particle size in optimizing waste-to-energy conversion processes, offering actionable insights for enhancing efficiency and sustainability in waste management systems.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"196 ","pages":"Article 107715"},"PeriodicalIF":5.8,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471737","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