Biomass & Bioenergy最新文献_第4页

Astaxanthin production from steam-exploded Eucalyptus grandis hydrolysates using Xanthophyllomyces dendrorhous: metabolic insights and biorefinery integration 利用树突叶黄菌从蒸汽爆炸的大桉水解液中生产虾青素：代谢见解和生物炼制整合

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-08-01 Epub Date: 2026-02-28 DOI: 10.1016/j.biombioe.2026.109189

Camila Rodríguez , Eugenia Vila , Pablo G. Del-Río , Beatriz Gullón , Claudia Lareo

The production of high-value bioproducts from lignocellulosic residues is an attractive strategy to enhance the economics of emerging biorefineries. This study evaluates the feasibility of producing astaxanthin (AXT) with Xanthophyllomyces dendrorhous using enzymatic hydrolysates obtained from steam-exploded Eucalyptus grandis wood, a species associated with large volumes of industrial processing residues. Five strains (Y-17810, Y-17268, Y-17832, Y-27179 and DSM 5626) were screened in glucose, xylose and hydrolysate media. Among them, DSM 5626 exhibited the highest production, achieving AXT titers of up to 1.7 mg L⁻¹ that were statistically comparable to those obtained with synthetic glucose, indicating that eucalyptus-derived substrates can support carotenoid biosynthesis. Xylose supported lower AXT titers, reflecting metabolic and redox constraints inherent to pentose utilization. Glutamate supplementation enhanced carotenoid formation, whereas excessive oxidative stress reduced AXT accumulation, suggesting that oxidative stress may exert both stimulatory and inhibitory effects depending on its intensity. HPLC–MS–ESI profiling revealed shifts in carotenoid intermediates consistent with changes in metabolic flux through the CrtS-dependent oxidation pathway. A simplified mass balance was used to explore the potential for AXT co-production within lignocellulosic biorefinery schemes. Overall, these results identify DSM 5626 as a robust AXT-producing strain and highlight eucalyptus hydrolysates as a renewable substrate with potential for pigment bioproduction.

从木质纤维素残留物中生产高价值生物产品是提高新兴生物精炼厂经济效益的一个有吸引力的策略。本研究评估了利用从蒸汽爆炸的大桉木材中获得的酶解物利用树突黄叶菌生产虾青素（AXT）的可行性，大桉木材是一种与大量工业加工残留物相关的物种。在葡萄糖、木糖和水解培养基中筛选5株菌株（Y-17810、Y-17268、Y-17832、Y-27179和DSM 5626）。其中，DSM 5626的产量最高，AXT滴度高达1.7 mg L−1，与合成葡萄糖的滴度相当，这表明桉树衍生的底物可以支持类胡萝卜素的生物合成。木糖支持较低的AXT滴度，反映了戊糖利用固有的代谢和氧化还原限制。谷氨酸的补充促进了类胡萝卜素的形成，而过度的氧化应激则减少了AXT的积累，这表明氧化应激可能同时发挥刺激和抑制作用，这取决于其强度。HPLC-MS-ESI分析显示类胡萝卜素中间体的变化与通过依赖crt的氧化途径代谢通量的变化一致。使用简化的质量平衡来探索在木质纤维素生物炼制方案中AXT联合生产的潜力。总的来说，这些结果确定DSM 5626是一种强大的产生axt的菌株，并强调桉树水解物是一种具有色素生物生产潜力的可再生底物。

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引用次数: 0

Hydrothermal liquefaction of diverse natural rubber waste streams in subcritical water for bio-oil production and fuel-relevant rheology 亚临界水中多种天然橡胶废液的水热液化及其与燃料相关的流变学研究

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-08-01 Epub Date: 2026-03-07 DOI: 10.1016/j.biombioe.2026.109240

Siwarote Boonrasri , Kongphob Intongkom , Sunisa Suchat

Hydrothermal liquefaction (HTL) in subcritical water offers a low-severity route to valorize biogenic natural rubber (NR) wastes into liquid fuels and intermediates while suppressing excessive gasification and char formation. Here, four NR feedstocks—Standard Thai Rubber (STR 5 and STR 20), Ribbed Smoked Sheets (RSS), and impurity-rich tapping-line rubber (TLR)—were comparatively assessed to establish process–structure–property relationships across commercial and waste-derived streams. Temperature (285–300 °C), water-to-rubber mass ratio (1:3–2:1), and residence time (10–40 min) were varied in a stirred batch reactor, and products were separated into an organic oligomeric phase, aqueous phase, solid residues, and gases (by mass balance). Optimal conditions (295 °C, 30 min, H₂O/NR = 1:1) yielded up to 93.8 wt% organic oligomers with low solid residue and gas formation. Gel permeation chromatography revealed a pronounced molecular-weight collapse (e.g., STR 5: Mw 7.5 × 10⁵ to 1.9 × 10⁴ g mol⁻¹) with narrowed distributions, which translated into orders-of-magnitude viscosity reduction and a transition from highly entangled elastomers to pumpable oligomeric liquids. Subsequent atmospheric distillation generated a fuel-range distillate with calorific value ∼41.5 MJ kg⁻¹, comparable to commercial diesel, and GC–MS indicated terpene-derived hydrocarbons with limonene as a major component. Notably, aged and impurity-containing feedstocks (RSS and TLR) delivered liquid yields and properties comparable to high-grade STR, demonstrating feedstock flexibility of subcritical HTL for NR waste-to-oil conversion.

亚临界水中的水热液化（HTL）为生物源天然橡胶（NR）废物转化为液体燃料和中间体提供了一条低强度的途径，同时抑制了过度的气化和炭的形成。本研究对四种天然橡胶原料——标准泰国橡胶（STR 5和STR 20）、罗纹烟熏板（RSS）和富含杂质的抽线橡胶（TLR）——进行了比较评估，以建立商业和废物来源流之间的工艺-结构-性能关系。在搅拌间歇式反应器中，改变温度（285-300℃）、水胶质量比（1:3-2:1）和停留时间（10-40 min），将产物分离为有机低聚物相、水相、固体残渣和气体（通过质量平衡）。最佳条件（295°C, 30 min, H2O/NR = 1:1）产率高达93.8 wt%的有机低聚物，固体残渣和气体生成率均较低。凝胶渗透层析显示了明显的分子量崩溃（例如，STR 5: Mw为7.5 × 105至1.9 × 104 g mol - 1），分布变窄，这转化为数量级的粘度降低，并从高度纠缠的弹性体转变为可泵送的低聚物液体。随后的常压蒸馏产生了热值约41.5 MJ kg - 1的燃料馏分，与商用柴油相当，GC-MS表明以柠檬烯为主要成分的萜烯衍生烃。值得注意的是，老化和含杂质的原料（RSS和TLR）的产液率和性能与高档STR相当，证明了亚临界HTL在NR废油转化中的原料灵活性。

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引用次数: 0

Phosphoric acid-assisted ball-milling modification of reed straw biochar for improved adsorption performance 磷酸辅助球磨改性芦苇秸秆生物炭提高吸附性能

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-08-01 Epub Date: 2026-03-09 DOI: 10.1016/j.biombioe.2026.109234

Wensheng Yang , Yumeng Ren , Jinze Li , Yulin Zhao , Di Wang , Geng Chen , Yingying Zhu

Biochar is a sustainable material for wastewater remediation, yet its efficiency is highly determined by feedstock selection and modification strategy. To address this, a series of biochars were synthesized from diverse biomass sources via chemical impregnation and pyrolysis. The best performing feedstock and chemical combination was then optimized by fine-tuning the chemical concentration and ball-milling time to further enhance its performance. Ball-milled phosphoric acid biochar (Q-PBC) demonstrated outstanding adsorption of Rhodamine B (RhB), with a specific surface area of 316.348 m²/g and a maximum capacity of 401.7 mg/g. Adsorption followed pseudo-second-order kinetics and the Langmuir isotherm, suggesting monolayer chemisorption. Moreover, Q-PBC exhibited strong pH tolerance across a wide pH range, owing to the introduction of stable phosphorus-containing functional groups. Notably, Q-PBC demonstrated stable adsorption performance over successive regeneration cycles, indicating good structural stability and recyclability. This work identifies reed straw-derived, phosphoric acid-modified biochar as a high-performance and recyclable adsorbent, offering practical insights into the design of efficient materials for organic wastewater treatment.

生物炭是一种可持续的废水修复材料，但其效率在很大程度上取决于原料的选择和改性策略。为了解决这一问题，以不同的生物质为原料，通过化学浸渍和热解合成了一系列生物炭。通过对原料浓度和球磨时间的微调，优化出最佳的原料和化学组合，进一步提高其性能。球磨磷酸生物炭（Q-PBC）对罗丹明B （RhB）具有良好的吸附性能，比表面积为316.348 m2/g，最大吸附容量为401.7 mg/g。吸附遵循拟二级动力学和Langmuir等温线，表明为单层化学吸附。此外，由于引入了稳定的含磷官能团，Q-PBC在很宽的pH范围内表现出很强的pH耐受性。值得注意的是，Q-PBC在连续的再生循环中表现出稳定的吸附性能，表明了良好的结构稳定性和可回收性。这项工作确定了芦苇秸秆衍生的，磷酸修饰的生物炭是一种高性能和可回收的吸附剂，为有机废水处理高效材料的设计提供了实际的见解。

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引用次数: 0

Performance enhancement of moisture diffusion energy harvesters by means of cobalt mixing and PVA coating of biochar 钴混合和生物炭PVA涂层增强湿扩散能量收集器性能

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-08-01 Epub Date: 2026-03-07 DOI: 10.1016/j.biombioe.2026.109236

Hyeonoh Hwang , Ahmed Muhammad Ajaz , Xuanjun Jin , Azma Fakhar , Joon Weon Choi

Moisture-diffusion energy harvesters (MDEHs) convert the transport of moisture and evaporation within porous electrodes into electrical output, providing a direct sensing-to-power pathway for water-leak detection and monitoring applications. Here, we report a biochar-based MDEH that integrates cobalt (Co) mixing and sequential poly vinyl alcohol (PVA) coating as complementary strategies to regulate interfacial charge transport and moisture management. Structure-optimized oak mushroom logwood (OML) biochar was prepared via KOH activation (700 °C), short-duration dry milling (5 min), and HNO₃ oxidation (5 M, 3 h), followed by aqueous Co impregnation (5–20 wt%) and drop-cast PVA coating (9 wt%, 1–4 mL). Although Co incorporation reduced BET surface area and mesoporosity, it significantly enhanced charge generation and transport, increasing the short-circuit current (Isc) from 18.7 ± 4.7 μA (control) to 44.1 ± 0.4 μA (Co20) and the open-circuit voltage (Voc) from 333 ± 7 to 368 ± 15 mV. The subsequent PVA coating infiltrated and bridged the fibrous scaffold, moderating capillary wetting dynamics (from 3 s to 35–45 s) and stabilizing the moisture gradient, thereby improving voltage reproducibility and extending the output duration. An intermediate coating level (PVA2) provided the optimal current-voltage balance, achieving an Isc of 39.2 ± 0.7 μA and a Voc of 572 ± 22 mV. Finally, Co20-PVA2-MDEH was assembled into a 25-strip array and integrated with an energy-harvesting power management integrated circuit and capacitive storage to enable intermittent, battery-free Bluetooth Low Energy advertising (10 s per cycle), demonstrating a practical self-powered module for real-time water-leak sensing.

水分扩散能量采集器（mdeh）将多孔电极内的水分传输和蒸发转化为电力输出，为水泄漏检测和监测应用提供了直接的传感-供电途径。在这里，我们报道了一种基于生物炭的MDEH，它集成了钴（Co）混合和顺序聚乙烯醇（PVA）涂层，作为调节界面电荷传输和水分管理的互补策略。通过KOH活化（700°C），短时间干磨（5 min）， HNO3氧化（5 M, 3 h），然后是Co水浸（5 - 20 wt%）和PVA滴投涂层（9 wt%, 1-4 mL）制备结构优化的橡木原木（OML）生物炭。Co的掺入虽然降低了BET的表面积和介孔率，但显著增强了电荷的产生和输运，使短路电流（Isc）从对照（18.7±4.7 μA）增加到44.1±0.4 μA (Co20)，开路电压（Voc）从333±7增加到368±15 mV。随后的PVA涂层渗透并桥接纤维支架，减缓了毛细管润湿动力学（从3秒到35-45秒），稳定了水分梯度，从而提高了电压的再现性，延长了输出时间。中间涂层层（PVA2）提供了最佳的电流-电压平衡，Isc为39.2±0.7 μA， Voc为572±22 mV。最后，将Co20-PVA2-MDEH组装成一个25条阵列，并与能量收集电源管理集成电路和电容存储集成在一起，实现间歇性，无电池蓝牙低功耗广告（每周期10秒），展示了一个实用的自供电模块，用于实时漏水检测。

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引用次数: 0

Open-source kinetic modelling of downdraft biomass gasification in Python: validation and parametric analysis of syngas quality Python下气流生物质气化的开源动力学建模：合成气质量的验证和参数分析

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-08-01 Epub Date: 2026-03-06 DOI: 10.1016/j.biombioe.2026.109216

Daniel Chuquín-Vasco , Juan Ignacio Torregrosa-López , Vanesa G. Lo-Iacono-Ferreira

An open-source, kinetic model for downdraft biomass gasification was developed in Python to provide a transparent and reproducible reactor-scale framework. The approach integrates coupled mass and energy balances with a 26-reaction kinetic set describing drying, multi-stage pyrolysis, oxidation, reduction, and tar cracking in a plug-flow configuration. Validation against laboratory-scale experimental data for Scots pine under air-blown conditions yielded an average mean absolute percentage error (MAPE) of 3.03% and a root mean square error (RMSE) of 0.6693 for major syngas species (CO, CO₂, H₂, CH₄). Additional validation using Miscanthus briquettes and rubber wood confirmed predictive robustness without parameter re-tuning, maintaining RMSE values below the established acceptance threshold (RMSE <1.60). Parametric analysis was conducted across representative ranges of equivalence ratio (ER), addition of steam(S/B), and pyrolysis temperature. Increasing ER reduced tar from 27.63 to 1.21 g Nm⁻³ but decreased syngas energy content beyond the optimal point (ER ≈ 0.32). The higher heating value (HHV) ranged from 4.02 to 5.24 MJ Nm⁻³, while lower heating value (LHV) reached 4.97 MJ Nm⁻³ at elevated pyrolysis temperatures. Steam addition increased H₂ up to 12.99 vol% (≈37% increase) with limited tar reduction (<5%). Temperature exerted the strongest influence, promoting near-complete tar conversion (99.7%). Overall, the proposed framework supports parametric, and reproducible model-based design of downdraft gasifiers.

在Python中开发了一个开源的向下气流生物质气化动力学模型，以提供透明和可复制的反应堆规模框架。该方法将耦合的质量和能量平衡与26个反应动力学集集成在一起，描述了塞流配置中的干燥、多阶段热解、氧化、还原和焦油裂解。根据实验室规模的实验数据对吹气条件下的苏格兰松进行验证，对主要合成气物种（CO, CO2, H2, CH4）的平均绝对百分比误差（MAPE）为3.03%，均方根误差（RMSE）为0.6693。使用芒草型煤和橡胶木进行的进一步验证证实了预测的稳健性，无需重新调整参数，将RMSE值保持在既定的可接受阈值（RMSE <1.60）以下。在等效比（ER）、蒸汽添加量（S/B）和热解温度的代表性范围内进行参数分析。增加ER可使焦油从27.63 g Nm−3降低到1.21 g Nm−3，但使合成气能含量降低到最佳点（ER≈0.32）以上。较高的热值（HHV）为4.02 ~ 5.24 MJ Nm−3，较高的热值（LHV）为4.97 MJ Nm−3。水蒸气的加入使H2增加到12.99 vol%(≈37%)，而焦油的减少量有限（<5%）。温度的影响最大，促进了近完全的焦油转化（99.7%）。总体而言，所提出的框架支持参数化和可重复的基于模型的下吸式气化炉设计。

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引用次数: 0

Slurry flow in a valveless hydrothermal reactor and its application to hydrothermal decomposition of bamboo powder 无阀水热反应器浆体流动及其在竹粉水热分解中的应用

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-08-01 Epub Date: 2026-03-06 DOI: 10.1016/j.biombioe.2026.109207

Jiamin Yang , Ayaka Homma , Nao Matsuno , Daitaro Ishikawa , Toshiyuki Nonaka , Masaru Watanabe , Satoshi Okimura , Tomoyuki Fujii

A valveless hydrothermal reactor was developed to investigate the flowability and reaction behavior of bamboo powder slurry. A multi-stage model with 160 stages, each approximated as a horizontal tube, was proposed to predict slurry flow and reactor performance, using empirical formulas for pressure drop. This model captures the axial variation of bamboo powder during hydrothermal treatment. The treatment significantly altered bamboo composition and properties. Hemicellulose content decreased from 22.4% to 4.18%, and the reduction of the 1731 cm⁻¹ peak indicated preferential hemicellulose decomposition. The number of molecules required to completely cover the sorption sites (q_m) decreased from 0.0441 to 0.0336 g-water/g-dry solids, and the wettability indicator (d_ccosθ) decreased from 23.7 to 15.5 nm, reflecting improved hygroscopicity, wettability, and dimensional stability of the hydrothermal products. Further investigation of xanthan gum decomposition, added as a dispersant, is needed to refine the model's predictive accuracy. Overall, this study demonstrates that hydrothermal treatment effectively modifies both structural and surface properties of bamboo powder, providing insights for optimizing biomass processing and improving product performance.

研制了一种无阀水热反应器，对竹粉浆的流动性和反应行为进行了研究。采用压降经验公式，建立了一个160级的多级模型，每个级近似为一个水平管，用于预测浆体流动和反应器性能。该模型捕捉了竹粉在水热处理过程中的轴向变化。处理显著改变了竹子的组成和性能。半纤维素含量从22.4%下降到4.18%，1731 cm−1峰的降低表明半纤维素优先分解。完全覆盖吸附位点所需的分子数（qm）从0.0441 g-water/g-dry solids下降到0.0336 g-water/g-dry solids，润湿性指标（dccosθ）从23.7 nm下降到15.5 nm，反映了水热产物的吸湿性、润湿性和尺寸稳定性的提高。进一步的研究黄原胶分解，添加作为分散剂，需要完善模型的预测准确性。总之，本研究表明水热处理可以有效地改变竹粉的结构和表面性质，为优化生物质加工和提高产品性能提供了见解。

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引用次数: 0

Mo2C nanospheres on biomass-derived N-doped carbon for high-efficiency hydrogen evolution 生物质源n掺杂碳上Mo2C纳米球的高效析氢

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-08-01 Epub Date: 2026-02-22 DOI: 10.1016/j.biombioe.2026.109107

Huaiyu Jin , Jinfeng Zhang , Enjie Yan, Zuopeng Fu, Fei Xie, Wenjiang Li

Transition metal carbides, such as molybdenum carbide, are considered attractive, low-cost alternatives to noble metals for catalyzing the hydrogen evolution reaction (HER), owing to their electronic structures that resemble platinum. A key ongoing challenge, however, is the design of such catalysts that combine high activity with durable stability for practical water electrolysis. Herein, a sustainable strategy is developed for fabricating nitrogen-doped carbon-supported Mo₂C nanoparticles (Mo₂C@NC) through pyrolysis of biomass-derived yam precursors and molybdenum salts. The resulting hybrid electrocatalyst delivers promising HER activity in alkaline media, achieving an overpotential of 161 mV at 10 mA cm⁻² and a Tafel slope of 75.5 mV dec⁻¹. This performance originates from the synergy within the Mo₂C/NC architecture, which ensures ample active sites and rapid charge transfer. This approach thus provides a sustainable blueprint for designing cost-effective electrocatalysts and advancing energy conversion technologies.

过渡金属碳化物，如碳化钼，由于其电子结构类似铂，被认为是催化析氢反应（HER）的贵金属的有吸引力的低成本替代品。然而，一个关键的持续挑战是设计这种催化剂，将高活性与持久的稳定性结合起来，用于实际的水电解。本文提出了一种可持续的策略，通过热解生物质衍生的山药前体和钼盐来制备氮掺杂碳负载的Mo2C纳米颗粒（Mo2C@NC）。所得到的杂化电催化剂在碱性介质中具有良好的HER活性，在10 mA cm−2下的过电位为161 mV， Tafel斜率为75.5 mV dec−1。这种性能源于Mo2C/NC架构内的协同作用，确保了充足的活性位点和快速的电荷转移。因此，这种方法为设计具有成本效益的电催化剂和推进能量转换技术提供了可持续的蓝图。

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引用次数: 0

Greenhouse gas balance of Eucalyptus biomass fuel production from converted Japanese cedar and cypress forests: A temporal carbon balance assessment 从日本雪松和柏树林转化的桉树生物质燃料生产的温室气体平衡：一个时间碳平衡评估

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-08-01 Epub Date: 2026-02-24 DOI: 10.1016/j.biombioe.2026.109169

Issei Sato , Hiroto Toda , Tomohiro Yoshida , Takayuki Asada , Eko Bhakti Hardiyanto , Gianova Vierry Prasetyadi , Chihiro Kayo

Although the climate benefits of woody biomass are being questioned because of concerns over temporal carbon dynamics, Japan is considering the introduction of fast-growing Eucalyptus species by replacing cedar (Cryptomeria japonica) and cypress (Chamaecyparis obtusa). This study examined the greenhouse gas (GHG) balance of Eucalyptus biomass production through the conversion of 56-year-old cedar and cypress forests over a 56-year evaluation period. Two scenarios were evaluated: using cedar and cypress as cross-laminated timber (CLT) construction materials (Scenario 1) and as fuel (Scenario 2), with Eucalyptus as biomass fuel in both scenarios. Carbon dioxide emissions from cedar and cypress were counted as GHG emissions, whereas temporary carbon sequestration by Eucalyptus was treated as emission reductions. Scenario 1 considered the substitution effects of concrete, steel, and kerosene for lamina drying, whereas Scenario 2 evaluated only fossil fuel power generation substitution. Carbon dioxide emissions from cedar and cypress biomass in the initial year dominated GHG emissions (180.36 and 271.44 t-CO₂/ha in Scenarios 1 and 2, respectively). Although the substitution effects from cedar and cypress utilization alone could not achieve net GHG reductions in any case, net reductions were achieved within the evaluation period in all cases through Eucalyptus fuel substitution. The timing of achieving emission reductions varied depending on the substitution target of Eucalyptus fuel. In comparison with conventional reforestation, Eucalyptus achieved earlier GHG reductions in all substitution cases. Although converting cedar and cypress forests to Eucalyptus requires careful consideration of temporary GHG increases, Eucalyptus introduction can serve as a viable climate-mitigation option.

尽管木质生物质的气候效益由于对时间碳动态的担忧而受到质疑，但日本正在考虑引入快速生长的桉树物种，取代雪松（Cryptomeria japonica）和柏树（Chamaecyparis obtusa）。本研究通过56年树龄杉木和柏木林的转换，在56年的评估期内对桉树生物量生产的温室气体平衡进行了研究。评估了两种方案：使用雪松和柏树作为交叉层压木材（CLT）建筑材料（方案1）和用作燃料（方案2），桉树作为两种方案的生物质燃料。雪松和柏树的二氧化碳排放量被视为温室气体排放，而桉树的临时固碳被视为减排。方案1考虑了混凝土、钢铁和煤油对层状干燥的替代效果，而方案2仅评估了化石燃料发电的替代效果。在情景1和情景2中，雪松和柏树生物量的二氧化碳排放量占主导地位（分别为180.36和271.44 t-CO2/ha）。尽管单独利用雪松和柏树的替代效应在任何情况下都无法实现温室气体净减排，但在所有情况下，通过桉树燃料替代，在评估期内都实现了净减排。实现减排的时间取决于桉树燃料的替代目标。与传统的再造林相比，桉树在所有替代情况下都实现了更早的温室气体减排。虽然将雪松和柏林转变为桉树林需要仔细考虑温室气体的暂时增加，但桉树的引入可以作为一种可行的减缓气候变化的选择。

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引用次数: 0

Next generation sustainable aviation fuels powered by renewable energy 由可再生能源提供动力的下一代可持续航空燃料

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-08-01 Epub Date: 2026-02-24 DOI: 10.1016/j.biombioe.2026.109164

Hamna Khalid , Labeeb Ali , Ayesha Alam , Abrar Inayat , Abdulrahman Alraeesi , Mohammednoor Altarawneh

Decarbonizing aviation has emerged as a significant challenge in the pursuit of global climate neutrality, given its reliance on high-energy-density liquid fuels and the lack of credible alternatives to zero-emission propulsion for long-haul flights. Sustainable Aviation Fuels (SAF) have emerged as the most realistic near-to intermediate-term option for reducing aviation greenhouse gas emissions, while being fully compatible with current aircraft and infrastructure. In this comprehensive and critical review, we provide a synthesis of existing and emerging SAF pathways, specifically, those involving renewable energy-driven systems. This review provides an overview of several ASTM-certified technologies: hydroprocessed esters and fatty acids, Fischer Tropsch-synthetic paraffinic kerosene, alcohol-to-jet, and synthetic iso-paraffins; as well as next-generation routes, including renewable electricity, green hydrogen, and carbon capture and utilization, such as power-to-liquid electrofuels, hybrid biomass-renewable pathways, solar thermochemical synthesis, and waste-to-fuel processes. Techno-economic and life-cycle analyses indicate that mature biomass-based pathways achieve GHG emissions reductions of 50%–80%, whereas renewable-powered SAF achieves reductions of 95%–98% when fully accounting for green inputs. Enabling factors are also explored in the review, including electrolyzer efficiency, carbon utilization strategies, infrastructure integration, and policy frameworks (CORSIA, ReFuelEU, SAF Grand Challenge) that could support the transition to larger-scale development. Overall, this review emphasizes that cost-competitive, net-zero pavement will depend on coordinated progress across renewable energy systems, hydrogen economies, and global policy alignment to drive the next generation of SAFs.

考虑到航空对高能量密度液体燃料的依赖，以及长途飞行缺乏可靠的零排放推进替代方案，脱碳航空已成为追求全球气候中和的一项重大挑战。可持续航空燃料（SAF）已成为减少航空温室气体排放的最现实的中短期选择，同时与现有的飞机和基础设施完全兼容。在这篇全面而批判性的综述中，我们提供了现有和新兴的SAF途径的综合，特别是那些涉及可再生能源驱动系统的途径。本文综述了astm认证的几种技术：加氢酯和脂肪酸、Fischer - tropsch合成石蜡煤油、醇制喷气和合成异石蜡；以及下一代路线，包括可再生电力、绿色氢和碳捕获和利用，如电力转化为液体电燃料、混合生物质-可再生途径、太阳能热化学合成和废物转化为燃料的过程。技术经济和生命周期分析表明，成熟的以生物质为基础的途径可实现50%-80%的温室气体减排，而在充分考虑绿色投入的情况下，可再生能源的SAF可实现95%-98%的减排。报告还探讨了能够支持向大规模开发过渡的有利因素，包括电解槽效率、碳利用战略、基础设施整合和政策框架（CORSIA、ReFuelEU、SAF Grand Challenge）。总体而言，本综述强调，具有成本竞争力的净零路面将取决于可再生能源系统、氢经济和全球政策协调的进展，以推动下一代saf的发展。

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引用次数: 0

Synergistic enhancement of biomethane production through anaerobic co-digestion of sugarcane bagasse and napier grass: Effects of substrate ratio, inoculum loading, and kinetic behaviour 通过厌氧共消化蔗渣和甘油三草协同增强生物甲烷生产：底物比例、接种量负荷和动力学行为的影响

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-08-01 Epub Date: 2026-02-27 DOI: 10.1016/j.biombioe.2026.109187

Nidhi Chhabra Talreja , Jaydeep Pandit , Ajay S. Kalamdhad

The effective valorization of agro-industrial residues is pivotal to advancing the bio-based industry, ensuring sustainable energy resilience and waste management in India. Sugarcane bagasse (BG), a fibrous by-product of the sugar industry, remains largely underutilized despite its abundance and carbon-rich composition. This study investigates the synergistic co-digestion of BG with napier grass (NG), a fast-growing perennial energy crop, to enhance biomethane production and establish a sustainable waste-to-energy pathway. Batch biochemical methane potential (BMP) assays were conducted to optimize the feed-mixing ratio (FMR) and substrate-to-inoculum (S/I) ratio, while kinetic modelling using the Pseudo-first-order and Modified gompertz models elucidated degradation behaviour and methane generation dynamics. The optimal combination of 40:60 (BG:NG) at an S/I ratio of 0.5 achieved the highest methane yield of 203.5 mL CH₄ g⁻¹ VS_added, accompanied by the maximum co-digestion performance index (CPI), indicating strong synergistic effects. Co-digestion improved hydrolysis efficiency, degradation kinetics, and overall methane productivity compared to monodigestion. The results of this study highlight the potential of using BG and NG for biomethane production which serves as a strategy for transforming sugar-industry waste into renewable energy.

农业工业残留物的有效增值对于推进生物基工业，确保印度的可持续能源弹性和废物管理至关重要。甘蔗渣（BG）是制糖工业的纤维副产品，尽管其丰富且富含碳，但在很大程度上仍未得到充分利用。本研究探讨了沼液与长生多年生能源作物甘油三酯（NG）的协同消化，以提高生物甲烷的产量，并建立可持续的废物转化能源途径。利用间歇生化甲烷势（BMP）测定优化进料混合比（FMR）和底物与接种物（S/I）比，同时利用伪一阶和修正gompertz模型建立动力学模型，阐明降解行为和甲烷生成动力学。以40:60 （BG:NG）、S/I比为0.5为最佳组合，甲烷产率最高，为203.5 mL CH4 g−1 VSadded，共消化性能指数（CPI）最高，显示出较强的协同效应。与单消化相比，共消化提高了水解效率、降解动力学和总甲烷产量。这项研究的结果强调了使用BG和NG生产生物甲烷的潜力，这是将制糖工业废物转化为可再生能源的一种策略。

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引用次数: 0