Fuel Processing Technology最新文献

High-quality biochar from the catalytic pyrolysis of Brachychiton seeds: Optimization and characterization 长柄石种子催化热解制备高品质生物炭：优化与表征

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-02-02 DOI: 10.1016/j.fuproc.2026.108410

Anass Choukoud , Hammadi El Farissi , Lokmane Abdelouahed , Abdesselam Tahani , Abdelmonaem Talhaoui

This study aims to describe the effect of pyrolysis conditions (temperature, particle size, and type of catalyst) on the production of biochar from Brachychiton seeds. Pyrolysis experiments were conducted at between 300 °C–550 °C with particle sizes from <315 μm to 800–1600 μm and catalysts including Al₂O₃, CaO, H₃BO₃, ZrO(NO₃)₂, V₂O₅, ZnO, Fe₂O₃, and TiO₂. The results showed that the temperature range from maximum biochar yield was 400 °C and smaller particle (smaller than <315 μm) showed higher biochar yield.Char yield was significantly improved by Al₂O₃ even at low temperatures while higher catalyst concentration led to an increased yield till 2% catalyst. Biochar had alkaline pH values, varying from 7.81 to 9.80, making them suitable as soil ameliorants. Electrical conductivity ranged from 308 μS.cm⁻¹ to 1650 μS.cm⁻¹ with the effect of temp and catalyst type measured, demonstrating ranges of ion concentrations available for agricultural application. ATR-IR analysis also revealed a decrease in the concentration of functional groups such as OH, CH and CO, signifying a conversion of the original biomass to more aromatic species with increasing temperature. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and elemental analyses indicate a remarkable change in the surface morphology as well as the composition of biochars, such as increased pore volume, the formation of numerous mineral phases and the successful incorporation of catalysts. Notably, TiO₂, H₃BO₃ and Fe₂O₃ are effective in enhancing their calorific value, which reaches 49.464 MJ.kg-¹. The results highlight the importance of biochar pyrolysis conditions for improving their properties for energy, environmental and agricultural use.

本研究旨在描述热解条件（温度、粒度和催化剂类型）对短柄石种子生产生物炭的影响。热解实验在300°C - 550°C之间进行，粒度为<；315 μm至800-1600 μm，催化剂包括Al₂O₃，CaO, H3BO3, ZrO(NO3)2, V₂O₅，ZnO， Fe₂O₃和TiO₂。结果表明：在400℃的温度范围内，颗粒越小（小于315 μm），生物炭产率越高；Al2O3在低温条件下也能显著提高炭的产率，催化剂浓度越高，产率越高，达到2%。生物炭具有7.81 ~ 9.80的碱性pH值，适合作为土壤改良剂。电导率为308 μS。cm−1 ~ 1650 μS。Cm−1与温度和催化剂类型的影响测量，显示可用于农业应用的离子浓度范围。ATR-IR分析还显示，OH、CH和CO等官能团的浓度下降，表明随着温度的升高，原始生物量向更多芳香物种转化。扫描电镜（SEM）、x射线衍射（XRD）和元素分析表明，生物炭的表面形貌和组成发生了显著变化，如孔隙体积增加、大量矿物相的形成以及催化剂的成功掺入。特别是，TiO₂、H₃BO₃、Fe₂O₃的热值达到49.464 MJ.kg-1，有效地提高了热值。研究结果强调了生物炭热解条件对改善其能源、环境和农业利用性能的重要性。

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引用次数: 0

Sustainable inorganic nanocatalysts in biodiesel production - A review on recent developments 生物柴油生产中可持续无机纳米催化剂的研究进展

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-01-27 DOI: 10.1016/j.fuproc.2026.108406

S. Sreejith , J. Ajayan , N.V. Uma Reddy , M. Saravanan , M. Gurupriya , Ribu Mathew

About 88% of the fuels used for energy generation are generated from oil. The use of fossil fuels (FFs) has been declining recently due to oil supplies depletion and associated issues like global warming and environmental degradation brought on by the emissions of gases like CO₂ and SO_x. Researchers have therefore been looking for energy sources other than FFs. One of the alternatives that has been frequently observed during the past ten years is biodiesel. Biodiesel is a blend of fatty acid methyl esters (FAME) made from sustainable resources including animal and vegetable fats, making it an ecologically unharmful and biodegradable fuel. This sustainable energy source has received significant attention lately because of the depletion of FFs, rising greenhouse gas emissions, and environmental pollution. Diesel engines can use biodiesel without any modifications. The concentration of contaminants such as hydrocarbon compounds, CO and particulate matter is reduced when biodiesel is added to diesel and used in diesel engines. However, inefficiencies in industrial processes are the root cause of the high cost of producing biodiesel. There are numerous methods for creating biodiesel, such as microemulsion, transesterification, esterification (EST) and pyrolysis reactions. Transesterification is one of the methods that has the most promise for increased output. This article critically analyses recent advances in advanced biodiesel synthesis methodologies via sustainable nanocatalysts (NC) like metal oxides, magnetic nanoparticles etc., and discusses operating variables that affect biodiesel yields.

大约88%用于发电的燃料来自石油。由于石油供应枯竭以及二氧化碳和硫氧化物等气体排放导致的全球变暖和环境恶化等相关问题，化石燃料（FFs）的使用最近一直在下降。因此，研究人员一直在寻找ff以外的能源。在过去十年中，经常观察到的替代品之一是生物柴油。生物柴油是由包括动植物脂肪在内的可持续资源制成的脂肪酸甲酯（FAME）混合物，使其成为一种生态无害且可生物降解的燃料。由于FFs的枯竭、温室气体排放的增加和环境污染，这种可持续能源最近受到了极大的关注。柴油发动机可以使用生物柴油，无需任何修改。将生物柴油添加到柴油中并用于柴油发动机，会降低碳氢化合物、一氧化碳和颗粒物等污染物的浓度。然而，工业过程中的低效率是生产生物柴油成本高的根本原因。制备生物柴油的方法有很多，如微乳液法、酯交换法、酯化法和热解法。酯交换法是最有希望提高产量的方法之一。本文批判性地分析了利用可持续纳米催化剂（NC）如金属氧化物、磁性纳米颗粒等先进生物柴油合成方法的最新进展，并讨论了影响生物柴油产量的操作变量。

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引用次数: 0

Gas hydrates: A comprehensive multi-scale review of mechanisms, diversified applications, risk mitigation, and pathways toward sustainable energy-environmental synergy 天然气水合物：对机制、多样化应用、风险缓解和可持续能源-环境协同途径的综合多尺度回顾

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-01-26 DOI: 10.1016/j.fuproc.2026.108404

Huaxue Yan , Yinglong Zhang , Gongming Xin, Dexiang Li

Gas hydrates technology have emerged as a vital strategy for tackling global energy and environmental challenges. This paper synthesizes the current state of knowledge regarding the exploitation, utilization, and prevention of gas hydrates, highlighting recent advancements while identifying key challenges and opportunities. The work explores the dual role of gas hydrates as a promising energy source and an environmental challenge, highlighting their applications in energy storage, carbon capture, gas separation, and water treatment. Additionally, it examines the associated risks, including pipeline blockages and potential climate impacts resulting from uncontrolled methane emissions. This work presents a multi-scale approach that integrates microscopic, mesoscopic, and macroscopic perspectives to offer a comprehensive understanding of gas hydrate phenomena. At microscopic level, molecular dynamics simulations and material characterization techniques offer insights into structural properties and molecular interactions. Mesoscopic studies, employing computational fluid dynamics and microfluidic experiments, provide insights into gas hydrate behavior in confined spaces. Macroscopic investigations, including laboratory experiments and multi-physical field coupling simulations, assess the effectiveness and environmental impacts of various exploitation techniques. The review concludes by examining the challenges and opportunities in the field, providing a roadmap for researchers and policymakers aiming to harness the potential of gas hydrates while mitigating associated risks.

天然气水合物技术已成为应对全球能源和环境挑战的重要战略。本文综合了目前有关天然气水合物开发、利用和预防的知识状况，重点介绍了最近的进展，同时确定了主要的挑战和机遇。这项工作探讨了天然气水合物作为一种有前途的能源和环境挑战的双重作用，重点介绍了它们在能源储存、碳捕获、气体分离和水处理方面的应用。此外，它还检查了相关风险，包括管道堵塞和不受控制的甲烷排放造成的潜在气候影响。这项工作提出了一种多尺度的方法，整合了微观、介观和宏观的观点，以提供对天然气水合物现象的全面理解。在微观层面上，分子动力学模拟和材料表征技术提供了对结构特性和分子相互作用的见解。介观研究，采用计算流体动力学和微流体实验，提供了对密闭空间中天然气水合物行为的见解。宏观研究，包括实验室实验和多物理场耦合模拟，评估了各种开发技术的有效性和环境影响。该报告总结了该领域的挑战和机遇，为研究人员和政策制定者提供了路线图，旨在利用天然气水合物的潜力，同时降低相关风险。

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引用次数: 0

A novel crude oil classification approach based on average carbon number determination and case studies 基于平均碳数测定的原油分类新方法及实例研究

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-01-20 DOI: 10.1016/j.fuproc.2026.108400

Renbao Zhao , Yuan Yuan , Jintang He , Wenjun Lu , Jiaying Wang , Guanghui Zhou , Jirui Zou , Shanhu Liu

Traditional crude oil classification based on American Petroleum Institute gravity (API) and saturates, aromatics, resins, and asphaltenes (SARA) content variation would encounter serious limitation during the heavy oil development. In this study, the average carbon number (ACN) is proposed for the first time as a quantitative parameter to establish a novel and efficient method for crude oil classification, which shows a closer correlation to the viscosity variation of crude oil in the Tahe oilfield. The ACN is determined according to the total mole amount of CO_x (CO + CO₂) emissions during the ramped temperature oxidation (RTO) process, where a constant heating rate is used in conducting the kinetic cell (KC) experiments. The results show that the most effective heavy oil dilution process occurs when the ACN difference lies within the range of 6–14 under the investigated conditions. Pilot tests conducted in the Tahe oilfield confirm that the regular of screening light hydrocarbon with maintaining this range significantly enhances downhole dilution efficiency while reducing diluent consumption. ACN obtained from KC experiment is a more accurate and promising method for determining the carbon number, especially for heavy oil. This classification method could be used as a quantitative and effective solution for optimizing viscosity prediction and diluent selection in the heavy oil up and downstream industry.

在稠油开发过程中，基于美国石油学会重力（API）和饱和烃、芳烃、树脂和沥青质（SARA）含量变化的传统原油分类将受到严重限制。本文首次提出平均碳数（ACN）作为原油分类的定量参数，建立了一种新颖有效的原油分类方法，该方法与塔河油田原油粘度变化的相关性更强。ACN是根据升温氧化（RTO）过程中COx （CO + CO₂）排放的总摩尔量确定的，其中在进行动力学电池（KC）实验时使用恒定的加热速率。结果表明：在实验条件下，当ACN差值在6 ~ 14范围内时，稠油稀释效果最好；在塔河油田进行的先导试验证实，在保持这一范围的情况下，筛选轻烃的规律显著提高了井下稀释效率，同时降低了稀释剂的消耗。通过KC实验得到的ACN是测定稠油碳数的一种较为准确和有前途的方法。该分类方法可作为稠油上下游行业粘度预测和稀释剂选择优化的定量有效解决方案。

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引用次数: 0

Experimental study on the vaporization and condensation of alkali metal chlorides in biomass ash under pressurized conditions 加压条件下碱金属氯化物在生物质灰中汽化缩聚的实验研究

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-01-19 DOI: 10.1016/j.fuproc.2026.108403

Tao Yang , Wuyang Xiao , Lijuan Chen , Bo Wei , Yanjie Qi , Shuanglong Li , Jianjiang Wang , Shan Wang , Xian Li , Hong Yao

The aim of this work was to understand the vaporization and condensation of alkali chlorides in biomass ash under elevated pressure, a series of experiments have been conducted on a horizontal high-pressure tube furnace. Stainless steel sheets were located in the tube furnace to condense inorganic species. Scanning electron microscopy-energy dispersive spectrometry (SEM-EDS), X-ray diffraction (XRD), X-ray fluorescence (XRF), and ImageJ software were employed to characterize and analyze the condensates and solid refractory residues. The results demonstrated that at 4.0 MPa, the relative change rates(

λ

) of K₂O and Cl in the solid residues reached 20.89% and 726.44%, respectively. Elevated pressure inhibited the vaporization of alkali metal chlorides in biomass ash, and high pressure further promoted the formation of mullite (Al_2.4Si_0.6O_4.8) and potassium calcium phosphate (KCaPO₄) in the solid residues. The condensates formed under different pressures were mainly white, square or spherical KCl and NaCl particles; when the pressure increased from 0.1 MPa to 2.0 MPa, the particle size of the condensates decreased to 18.8% of the initial value. In conclusion, pressure exerted a crucial regulatory effect on the vaporization and condensation processes of gaseous chlorides throughout the entire thermal conversion process.

为了了解生物质灰中碱氯化物在高压下的汽化和冷凝过程，在卧式高压管式炉上进行了一系列的实验研究。不锈钢片被放置在管式炉中以凝结无机物。采用扫描电镜-能谱仪（SEM-EDS）、x射线衍射仪（XRD）、x射线荧光仪（XRF）和ImageJ软件对凝析物和固体难熔渣进行表征和分析。结果表明，在4.0 MPa下，固体残渣中K2O和Cl的相对变化率λ分别达到20.89%和726.44%。高压抑制了生物质灰分中碱金属氯化物的汽化，高压进一步促进了固体残渣中莫来石（Al2.4Si0.6O4.8）和磷酸钙钾（KCaPO4）的形成。不同压力下形成的凝析物主要为白色、方形或球形KCl和NaCl颗粒；当压力从0.1 MPa增加到2.0 MPa时，凝析油的粒径减小到初始值的18.8%。综上所述，在整个热转化过程中，压力对气态氯化物的蒸发和冷凝过程起着至关重要的调节作用。

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引用次数: 0

Tuning aromatic selectivity in catalytic pyrolysis of epoxy resin over Nb/Ga-modified ZSM-5: porosity engineering and kinetic elucidation Nb/ ga改性ZSM-5催化热解环氧树脂芳烃选择性调控：孔隙工程与动力学解析

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-01-16 DOI: 10.1016/j.fuproc.2026.108402

Shangpeng Pan , Kaiwen Yun , Rui Shan , Shuxiao Wang , Taoli Huhe , Xiang Ling , Haoran Yuan , Yong Chen

For the high-value resource recovery of waste epoxy resin, this study prepared Nb and Ga modified ZSM-5 zeolite catalysts and systematically evaluated their performance in the catalytic pyrolysis of epoxy resin for aromatic hydrocarbon production. The results indicate that the bimetallic catalyst 8Nb4Ga (with 8% Nb and 4% Ga loading) exhibited the optimal catalytic activity, achieving the highest aromatic hydrocarbon yield of 68.6% under the conditions of 650 °C and a feedstock-to-catalyst mass ratio of 1:1. Characterization analyses confirmed that the metal species were well-dispersed on the ZSM-5 support without destroying the zeolite framework structure, though they induced changes in the pore structure. The introduction of Ga contributed to the formation of more mesoporous structures. Kinetic analysis revealed that the 8Nb4Ga catalyst significantly increased the apparent activation energy of the pyrolysis process, indicating that it guides the reactants through a higher-energy-barrier yet more selective pathway for aromatic hydrocarbon formation. This research provides theoretical support for the targeted catalytic conversion of waste epoxy resins into high-value aromatics.

为实现废环氧树脂的高价值资源化利用，本研究制备了Nb和Ga改性ZSM-5沸石催化剂，并对其在环氧树脂催化热解制芳烃中的性能进行了系统评价。结果表明，双金属催化剂8Nb4Ga（负载8% Nb和4% Ga）的催化活性最佳，在650℃、料催化剂质量比为1:1的条件下，芳烃收率最高，为68.6%。表征分析证实，金属物种在ZSM-5载体上分散良好，虽然它们引起了孔隙结构的变化，但不会破坏沸石骨架结构。Ga的引入有助于形成更多的介孔结构。动力学分析表明，8Nb4Ga催化剂显著提高了热解过程的表观活化能，表明其引导反应物通过更高能垒、更有选择性的途径生成芳烃。本研究为废环氧树脂定向催化转化为高值芳烃提供了理论支持。

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引用次数: 0

Evaluating the wettability of coal and non-coal mineral particles by microcalorimetry 用微量热法评价煤和非煤矿物颗粒的润湿性

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-01-13 DOI: 10.1016/j.fuproc.2026.108395

Chengping Deng , Zhongzheng Wu , Teng He , Yuqiang Mao , Liuyang Dong , Dianwen Liu

The surface wettability of coal and non-coal minerals is one of the critical factors influencing their separation and processing. In this study, ten common coal and non-coal minerals were selected to analyze the quantitative relationship between their surface wettability and wetting heat through contact angle, specific surface area and microcalorimeter measurements. For all minerals except anthracite, the heat flow curves measured by microcalorimetry initially rose rapidly, then gradually declined and stabilized, which was opposite to the wetting curve change of anthracite. Both the theoretical calculation and microcalorimeter measurement indicated that the wetting process of anthracite was endothermic, while those of other minerals were exothermic. The wetting heat gradually decreased with the increase of surface contact angle of minerals. The wetting heat of minerals measured by the microcalorimeter exhibited a positive proportional linear correlation with the cosine of the mineral contact angle, which is consistent with the theoretical model. This paper will provide a valuable insight into the surface wettability of coal and non-coal mineral particles from a thermodynamic perspective.

煤和非煤矿物的表面润湿性是影响其分离和加工的关键因素之一。本研究选取了10种常见的煤和非煤矿物，通过接触角、比表面积和微量热计测量，分析了其表面润湿性与润湿热之间的定量关系。除无烟煤外，微量热法测得的所有矿物热流曲线均呈现先快速上升后逐渐下降趋于稳定的趋势，与无烟煤的润湿曲线变化相反。理论计算和微量热计测量结果表明，无烟煤的润湿过程是吸热的，而其他矿物的润湿过程是放热的。随着矿物表面接触角的增大，润湿热逐渐减小。微量热计测得的矿物润湿热与矿物接触角余弦值呈正比例线性相关，与理论模型一致。本文将从热力学角度对煤和非煤矿物颗粒的表面润湿性提供有价值的见解。

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引用次数: 0

A green alternative: Engine performance and emission effect analysis of linalool-derived biodiesel with B₄C nanoparticles for sustainable fuel solutions 绿色替代方案：用B₄C纳米颗粒作为可持续燃料解决方案的芳樟醇衍生生物柴油的发动机性能和排放效果分析

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-01-13 DOI: 10.1016/j.fuproc.2026.108401

Süleyman Şimşek , Koray Güler

This study represents the first investigation in the literature to employ linalool as a biodiesel feedstock and to examine the effects of B₄C nanoparticles as an additive in linalool-based biodiesel blends. The experiments were conducted using a direct injection, four-stroke, air-cooled, single-cylinder diesel engine. In tests performed with biodiesel produced from linalool, the optimum fuel blend was identified as BDL30. To this blend, B₄C nanoparticles were added at concentrations of 25, 50, 75, and 100 ppm to prepare different mixtures; the effects of these sterilized blends on combustion, emissions, and engine performance were evaluated. Compared to diesel fuel, BTE increased by 4.69%, while CO, HC, and smoke emissions decreased by 45.99%, 25.75%, and 23.83%, respectively. Additionally, BSFC was reduced by 10.18%, whereas NOₓ and CO₂ emissions increased by 23.4% and 21.54%, respectively. The results indicated that the BDL30–75 ppm blend delivered the best performance in terms of both emission reduction and overall efficiency. This study provides findings that contribute to the advancement of renewable energy sources, the adoption of clean production technologies, the mitigation of climate change, and the achievement of sustainable development goals.

本研究是文献中首次将芳樟醇作为生物柴油的原料，并研究了硫酸钡纳米颗粒作为添加剂在芳樟醇基生物柴油混合物中的作用。实验是用一台直接喷射、四冲程、气冷、单缸柴油发动机进行的。在用芳樟醇生产的生物柴油进行的试验中，最佳燃料混合物被确定为BDL30。在此混合物中，加入浓度为25、50、75和100 ppm的硫酸钡纳米粒子制备不同的混合物；评估了这些灭菌混合物对燃烧、排放和发动机性能的影响。与柴油相比，BTE增加了4.69%，CO、HC和烟雾排放量分别下降了45.99%、25.75%和23.83%。此外，BSFC减少了10.18%，而NOₓ和CO₂排放量分别增加了23.4%和21.54%。结果表明，bdl30 - 75ppm混合燃料在减排和综合效率方面表现最佳。本研究提供了有助于推进可再生能源、采用清洁生产技术、减缓气候变化和实现可持续发展目标的研究结果。

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引用次数: 0

Kinetic insights into high-density polyethylene, polyethylene terephthalate, and their blend using thermogravimetric analysis and model-free methods 动力学洞察高密度聚乙烯，聚对苯二甲酸乙二醇酯，和他们的混合物使用热重分析和无模型方法

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-01-12 DOI: 10.1016/j.fuproc.2025.108390

Mohamed Koraiem M. Handawy , Tamer M.M. Abdellatief , Xiongbo Duan , Tareq Salameh , Abdul-Kadir Hamid , Mousa Hussein

The accumulation of plastic waste, particularly from high-density polyethylene (HDPE) and polyethylene terephthalate (PET), poses significant environmental challenges due to their persistence and the complexity of recycling mixed polymer. Accordingly, this study was conducted to investigate the thermal degradation behavior and kinetic parameters of virgin HDPE, PET, and their binary mixture to support waste-to-energy applications. Thermogravimetric analysis (TGA) and Differential thermogravimetry (DTG) were performed under pyrolytic conditions using nitrogen as the carrier gas at multiple heating rates, and degradation kinetics were evaluated using five isoconversional methods: Friedman (FR), Kissinger–Akahira–Sunose (KAS), Flynn–Wall–Ozawa (FWO), Starink (STK), and Vyazovkin (Vy). Results showed that both HDPE and PET undergo single-step degradation, with HDPE decomposing at higher temperatures in a narrower range (449–497 °C) than PET (394–471 °C) at 15 °C/min. The HDPE–PET blend showed a broader decomposition range (417–495 °C) with an onset temperature between PET and HDPE. Comparatively, the Friedman (FR) method provided reliable activation energies for HDPE and PET (259.55 ± 7.3 and 193.16 ± 17.07 kJ/mol), as it effectively captures the single-step degradation of individual polymers with minimal variation across conversion levels. For the HDPE–PET binary blend, the Vyazovkin (Vy) method yielded the most consistent activation energy profile (173.51–217.45 kJ/mol; average 210.47 ± 7.2 kJ/mol), demonstrating its robustness in handling the complex, overlapping decomposition behaviors of mixed polymer systems. Model-fitting via y(α)/y(0.5) analysis identified the autocatalytic model

{(1 - α)}^{n} (α^{m} + α_{*})

as the most appropriate for all samples, with simulated curves showing excellent agreement with experimental data (R² > 0.92). These findings demonstrate the feasibility of predicting pyrolysis behavior for both individual and mixed plastics, contributing to improved strategies for managing mixed plastic waste streams.

塑料废物的积累，特别是来自高密度聚乙烯（HDPE）和聚对苯二甲酸乙二醇酯（PET）的塑料废物，由于其持久性和回收混合聚合物的复杂性，对环境构成了重大挑战。因此，本研究旨在研究纯HDPE、PET及其二元混合物的热降解行为和动力学参数，以支持垃圾能源转化应用。以氮气为载气，在多种升温速率下进行热重分析（TGA）和差热重分析（DTG），并采用Friedman （FR）、Kissinger-Akahira-Sunose （KAS）、Flynn-Wall-Ozawa （FWO）、Starink （STK）和Vyazovkin (Vy) 5种等转换方法评价降解动力学。结果表明，HDPE和PET均为单步降解，HDPE在15℃/min的温度范围内（449 ~ 497℃）高于PET（394 ~ 471℃）。HDPE - PET共混物具有较宽的分解范围（417-495℃），起始温度介于PET和HDPE之间。相比之下，Friedman （FR）方法为HDPE和PET提供了可靠的活化能（259.55±7.3 kJ/mol和193.16±17.07 kJ/mol），因为它有效地捕获了单个聚合物的单步降解，并且在转化水平上变化最小。对于HDPE-PET二元共混体系，Vyazovkin （Vy）方法得到了最一致的活化能分布（173.51-217.45 kJ/mol，平均210.47±7.2 kJ/mol），证明了其在处理复杂、重叠的混合聚合物体系分解行为方面的鲁棒性。通过y(α)/y（0.5）分析进行模型拟合，发现自催化模型1−αnαm+α∗最适合所有样品，模拟曲线与实验数据吻合良好（R2 > 0.92）。这些发现证明了预测单个和混合塑料热解行为的可行性，有助于改进管理混合塑料废物流的策略。

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引用次数: 0

Advanced hydrogen production process design from cow manure supported by rural waste based on environmental and economic evaluation 基于环境与经济评价的农村废弃物支撑牛粪制氢工艺设计

IF 7.7 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology

Pub Date : 2026-01-12 DOI: 10.1016/j.fuproc.2026.108394

Jeongjae Oh , Minsu Lim , Konan Alain Cedric Nzisso , Minseok Im , Dongwoo Kang , Sunghyun Cho

Cow manure is generated in large quantities and offers a stable supply, making it a promising biomass resource. However, its high moisture content makes direct gasification challenging, and it is therefore commonly treated through incineration, landfilling, or composting, all of which can cause severe air and soil pollution. To address these issues, this study designed and evaluated a gasification process that produces hydrogen without a separate drying step by blending cow manure with rice straw. The results showed that the blended gasification process achieved optimal hydrogen production and a favorable H₂/CO ratio at 700 °C and a steam-to-fuel ratio of 0.4, while additional tail-gas recycling further increased hydrogen output. Life-cycle assessment revealed that blended gasification reduced global warming potential by nearly half compared with conventional pathways, and techno-economic analysis indicated a 24% reduction in hydrogen production cost. At an industry-scale capacity of 1000 t/d, the hydrogen production cost was estimated at 2.75 USD/kg, which is lower than the target cost of 4 USD/kg. Overall, the findings demonstrate that directly gasifying high-moisture cow manure by blending it with dried agricultural residues offers a practical treatment pathway and represents a promising approach for decentralized, low-carbon hydrogen production in rural regions.

牛粪大量产生并提供稳定的供应，使其成为一种有前途的生物质资源。然而，它的高水分含量使直接气化具有挑战性，因此通常通过焚烧、填埋或堆肥来处理，所有这些都可能导致严重的空气和土壤污染。为了解决这些问题，本研究设计并评估了一种气化过程，该过程通过将牛粪与稻草混合而无需单独干燥步骤即可产生氢气。结果表明，混合气化工艺制氢效果最佳，在700℃、蒸汽燃料比为0.4时，H2/CO比较好，而额外的尾气回收进一步提高了氢气产量。生命周期评估显示，与传统途径相比，混合气化将全球变暖潜力降低了近一半，技术经济分析表明，氢气生产成本降低了24%。在1000 t/d的工业规模产能下，氢气生产成本估计为2.75美元/公斤，低于4美元/公斤的目标成本。总体而言，研究结果表明，通过将高水分牛粪与干燥的农业残留物混合直接气化，为农村地区分散的低碳氢气生产提供了一种实用的处理途径，并代表了一种有希望的方法。

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