Biomass & Bioenergy最新文献_第5页

Sequential multi-stage biorefinery of chilean Winemaking residues: recovery of high-value compounds and environmental impact of anthocyanins on phenolic-modified anaerobic digestion for bioenergy production 智利酿酒残留物的连续多级生物精炼：高价值化合物的回收和花青素对酚改性厌氧消化生物能源生产的环境影响

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-01-30 DOI: 10.1016/j.biombioe.2026.109033

Cassamo U. Mussagy , Angie V. Caicedo-Paz , Valentina V. General , Antonia L. Cruz-Diaz , Guilherme Peixoto , Vijaya Raghavan

The urgent need to shift from a linear to a circular bioeconomy model is becoming increasingly crucial in the face of escalating climate change and resource scarcity. This study introduces a sequential, multi-stage biorefinery approach to valorize Chilean winemaking residues grape pomace (peels and seeds) into high-value products and bioenergy, showcasing a scalable circular platform for sustainable viticulture. The process incorporates solvent-free extraction of grape seed oil (GSO), enzymatic biotransformation into funcional oils (FO), green solvent recovery of anthocyanins, and phenolic-modified anaerobic digestion (AD) for biohydrogen and biomethane production. Solvent-free cold pressing yielded GSO rich in unsaturated fatty acids (∼90 %), which was subsequently converted into capric acid–rich structured lipids with ∼45 % C10 incorporation via enzymatic biotransformation. Anthocyanin recovery using acidified 50 % ethanol achieved the highest yield (93.01 mg/L) and improved extract stability. AD of anthocyanin-free grape pomace increased methane production from 7.34 to 9.61 mL, enhanced methane yield from 2.34 to 4.91 mL g⁻¹ COD removed, and improved biogas quality (75–77 % CH₄), with energy recovery estimates indicating substantial potential for renewable electricity (56.3 GWh year⁻¹) and heat generation (146,370.8 Gcal year⁻¹). This work demonstrates, for the first time, an experimentally validated sequential biorefinery in which the selective recovery of anthocyanins not only yields a stable, high-value extract but also mitigates phenolic inhibition during AD, significantly enhancing biomethane yield and biogas quality within a fully circular valorization platform for winemaking residues in Chile.

面对日益加剧的气候变化和资源短缺，从线性生物经济模式转向循环生物经济模式的迫切需要变得越来越重要。本研究介绍了一种连续的、多阶段的生物精炼方法，将智利酿酒残留物葡萄渣（果皮和种子）转化为高价值产品和生物能源，展示了一个可扩展的可持续葡萄栽培循环平台。该工艺包括无溶剂提取葡萄籽油（GSO），酶促生物转化为功能油（FO），绿色溶剂回收花青素，以及酚改性厌氧消化（AD）生产生物氢和生物甲烷。无溶剂冷压产生富含不饱和脂肪酸的GSO(~ 90%)，随后通过酶促生物转化转化为富含癸酸的结构化脂质，其中C10掺入量为~ 45%。50%乙醇酸化提取花青素收率最高（93.01 mg/L），提取液稳定性较好。无花青素葡萄渣的AD使甲烷产量从7.34 mL增加到9.61 mL，甲烷产率从2.34 mL增加到4.91 mL g−1，去除COD，改善沼气质量（75% - 77% CH4），能源回收估计表明可再生电力（56.3 GWh年−1）和产热（146,370.8 Gcal年−1）的巨大潜力。这项工作首次通过实验验证了序次生物精馏，其中花青素的选择性回收不仅产生稳定的高价值提取物，而且还减轻了AD期间的酚类抑制，显著提高了智利酿酒残留物全循环增值平台的生物甲烷产量和沼气质量。

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引用次数: 0

Integrated modelling and multi-objective optimisation of cutting force, roughness and noise in bamboo end-grain milling 竹材端粒铣削切削力、粗糙度和噪声的综合建模与多目标优化

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-01-30 DOI: 10.1016/j.biombioe.2026.109034

Weihang Dong , Xinchun Tian , Junjie Jiang , Jinxin Wang , Xiaolei Guo , Zhaobing Zhou

End-grain milling is essential in bamboo machining; however, the interaction between its vertically aligned fibrous structure and the cutting tool often generates high cutting forces and elevated noise, thereby hindering machining quality, increasing production costs, and compromising the processing environment. This study investigated the effects of milling parameters on cutting force, surface integrity, and noise, and developed a multi-objective optimisation framework to determine suitable milling conditions. A combined methodology incorporating response surface modelling (RSM) and multi-objective optimisation was used to predict cutting force, surface roughness, and noise. The results showed that feed rate and milling depth were the dominant factors influencing the three indicators, while spindle speed exhibited a nonlinear medium-optimal effect. The pronounced interaction between feed rate and milling depth further demonstrated intrinsic trade-offs among cutting force, surface roughness, and noise. Four multi-objective optimisation algorithms (NSGA-II, NSGA-III, SPEA2, and MOPSO) were applied to address these trade-offs, and a TOPSIS-based procedure was used to select a feasible compromise configuration. Algorithmic performance was benchmarked using hypervolume, inverted generational distance, spread metric, and prediction error. The findings indicated that models developed using RSM and multi-objective algorithms achieved high predictive accuracy and generated high-quality Pareto fronts in validation tests. Among the algorithms, MOPSO provided the most balanced optimisation of cutting force, surface roughness, and noise through effective swarm information sharing, demonstrating superior convergence, diversity, and prediction accuracy (average error: 1.69 %). Overall, this study offers practical guidance for improving machining quality, reducing costs, and enhancing the processing environment in bamboo end-grain milling.

竹材加工中，端粒铣削是必不可少的；然而，其垂直排列的纤维结构与刀具之间的相互作用往往会产生高切削力和高噪声，从而影响加工质量，增加生产成本，损害加工环境。本研究考察了铣削参数对切削力、表面完整性和噪声的影响，并开发了一个多目标优化框架来确定合适的铣削条件。采用响应面建模（RSM）和多目标优化相结合的方法预测切削力、表面粗糙度和噪声。结果表明，进给速度和铣削深度是影响这3个指标的主导因素，主轴转速表现出非线性的中优效应。进给速度和铣削深度之间明显的相互作用进一步证明了切削力、表面粗糙度和噪声之间的内在权衡。采用四种多目标优化算法（NSGA-II、NSGA-III、SPEA2和MOPSO）来解决这些权衡，并使用基于topsis的程序来选择可行的折衷配置。算法性能使用hypervolume，倒代距离，传播度量和预测误差进行基准测试。结果表明，采用RSM和多目标算法建立的模型具有较高的预测精度，并在验证测试中生成了高质量的帕累托前沿。其中，MOPSO算法通过有效的群体信息共享，对切削力、表面粗糙度和噪声进行了最均衡的优化，具有较好的收敛性、多样性和预测精度（平均误差为1.69%）。研究结果对提高竹材端粒铣削加工质量、降低加工成本、改善加工环境具有实际指导意义。

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引用次数: 0

Decoupling solid recovery, delignification, and sugar yield in LCB pretreatment using explainable machine learning and TOPSIS 利用可解释的机器学习和TOPSIS解耦LCB预处理中的固体回收率、脱木质素和糖产量

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-01-30 DOI: 10.1016/j.biombioe.2026.109032

Raushan Quraishi, Biswanath Mahanty

Optimal pretreatment conditions for solid recovery (SR) or delignification (DL) do not necessarily align with maximum sugar yield (SY) in enzymatic hydrolysis. In this study, a central composite design was employed to examine the effects of temperature, NaOH concentration, and incubation time on sugar cane bagasse pretreatment. Hyperparameter-optimized ANN models trained on Gaussian-error-augmented data demonstrated good prediction and generalization capabilities (R²: 0.993, 0.991, 0.980; R²_CV: 0.972, 0.994, 0.993). Shapley additive explanations (SHAP) analysis of the ANN model suggests NaOH concentration and time are the most important predictors for SR and DL, respectively. Although pretreatment conditions optimized for DL (83.54 %) and SR (97.89 %) differed markedly, the corresponding RS yields (0.51 and 0.26 g/g) remained well below the maximum achievable value (0.70 g/g). The best Pareto optimal solutions were selected based on the analytic hierarchy process (AHP) from multi-objective optimization (MOO), ranked by the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) framework, suggesting an optimal trade-off between SR (66.08 %), DL (71.19 %), and RS yield (0.63 g/g).

酶解中固体回收（SR）或脱木质素（DL）的最佳预处理条件不一定与最大糖产量（SY）一致。本研究采用中心复合设计考察温度、NaOH浓度和孵育时间对甘蔗渣预处理的影响。基于高斯误差增强数据训练的超参数优化人工神经网络模型具有良好的预测和泛化能力（R2: 0.993, 0.991, 0.980; R2 cv: 0.972, 0.994, 0.993）。人工神经网络模型的Shapley加性解释（SHAP）分析表明，NaOH浓度和时间分别是SR和DL最重要的预测因子。虽然优化后的DL（83.54%）和SR（97.89%）的预处理条件差异显著，但相应的RS收率（0.51和0.26 g/g）仍远低于最高可达值（0.70 g/g）。基于多目标优化（MOO）中的层次分析法（AHP）选择最佳Pareto最优解，并采用TOPSIS （Order Preference Technique by Similarity to Ideal Solution）框架对其进行排序，得出SR（66.08%）、DL（71.19%）和RS产量（0.63 g/g）之间的最优权衡。

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引用次数: 0

Unlocking Lignin from Date Fruit Pomace: Comparative Extraction Using Organosolv, Alkaline, and Deep Eutectic Solvents 从枣渣中提取木质素：有机溶剂、碱性溶剂和深共晶溶剂的比较提取

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-01-30 DOI: 10.1016/j.biombioe.2026.109005

Clinton E. Okonkwo , Huda Mohamed , Sabu Varghese , Matthew J. O'Connor , Aseel G.S. Hussien , Kyriaki Polychronopoulou , Mutamed Ayyash , Ali H. Al-Marzouqi , Dorin Boldor , Afaf Kamal-Eldin

Date fruit pomace (DFP) is a plant biomass that can be valorized through lignin extraction and is an underutilized polymer with significant potential. This study focused on the extraction of lignin from DFP using organosolv, alkaline, and deep eutectic solvent (DES; choline chloride–lactic acid). Response surface methodology was used to optimize extraction conditions. The physicochemical and thermal properties of lignin and solid residues were evaluated. Under optimal conditions organosolv produced lower lignin yield (32 %) than alkaline (44 %) or DES (40 %). However, lignin solubilized using organosolv had higher purity (78 %), contained more guaiacyl and syringyl units, was more amorphous, had low molecular weight and smaller fragments, and exhibited lower thermal stability compared to lignin from alkaline and DES extractions. Organosolv also preserved the cellulose chains in the residue better than alkaline and DES. Notably, the lignin solubilized using DES and residual lignin in the residue appeared to form a strong association with protein. Overall, in lignocellulose complexed with proteins, organosolv produces purer lignin and exerts less effect on the residual cellulose chains, providing a relatively pure lignin and energy-dense residues for thermochemical conversion, whereas alkaline and DES produce carbohydrate- and protein-rich fractions that are potential substrates for downstream bioenergy processes.

枣果渣（DFP）是一种可以通过木质素提取来实现价值增值的植物生物质，是一种未被充分利用的具有巨大潜力的聚合物。研究了采用有机溶剂、碱性溶剂和深度共熔溶剂（DES；氯化胆碱-乳酸）从DFP中提取木质素。采用响应面法对提取条件进行优化。对木质素和固体残渣的物理化学和热性质进行了评价。在最佳条件下，有机溶剂的木质素产率（32%）低于碱性（44%）或DES（40%）。然而，与碱性和DES提取的木质素相比，用有机溶剂溶解的木质素纯度更高（78%），含有更多的愈木酰基和丁香基单元，更无定形，分子量低，碎片更小，热稳定性较差。有机溶剂对纤维素链的保存效果也优于碱性溶剂和DES。值得注意的是，用DES溶解的木质素和残留物中的木质素似乎与蛋白质形成了强烈的结合。总的来说，在与蛋白质络合的木质纤维素中，有机溶剂产生的木质素更纯净，对残留的纤维素链的影响更小，为热化学转化提供了相对纯净的木质素和能量密集的残留物，而碱性和DES产生的富含碳水化合物和蛋白质的组分是下游生物能源过程的潜在底物。

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引用次数: 0

From wood waste to sustainable energy: Unravelling the effects of temperature on biological wood oxidation 从木材废料到可持续能源：揭示温度对生物木材氧化的影响

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-01-29 DOI: 10.1016/j.biombioe.2026.109026

Shiyang Fan , Yujia Luo , Annemiek ter Heijne , Jinxi Song , Cees J.N. Buisman , Wei-Shan Chen

Biological wood oxidation (BWO) has emerged as a sustainable method for converting low-value wood waste into sustainable heat for residential applications. However, the mechanisms underlying temperature-dependent efficiency remain underexplored. The objective of this study is to investigate how cultivation temperature and dynamic temperature shifts influence BWO performance across bottle tests and reactor tests. Additionally, we determine the relative abundance of microbial biomass and economic analysis to gain a better understanding of the process. The results indicated that temperature significantly affected dry wood weight loss, O₂ consumption and CO₂ evolution. In the bottle tests, O₂ consumption and dry wood weight loss were maximized at 40 °C. The microbial biomass was highest at 30 °C, while 50 °C significantly inhibited microbial development, resulting in the lowest dry wood weight loss and O₂ consumption. Shifting temperature to 40 °C partially restored the degradation capacity. In the reactor tests, 40 °C exhibited higher weight loss, CO₂ evolution, and microbial biomass in comparison to 50 °C. These findings demonstrate that 40 °C was the favored temperature of BWO. Our preliminary economic analysis indicated that BWO is cost-effective compared to wood pellets and anaerobic digestion for household heating purposes. The insights gained from this study will be valuable for enhancing woody biomass management and reducing the consumption of fossil fuels.

生物木材氧化（BWO）已经成为一种可持续的方法，将低价值的木材废料转化为住宅应用的可持续热能。然而，温度依赖效率的机制仍未得到充分探索。本研究的目的是探讨培养温度和动态温度变化对瓶试和反应器试验中BWO性能的影响。此外，我们确定了微生物生物量的相对丰度和经济分析，以更好地了解这一过程。结果表明，温度对干材失重、O2消耗和CO2演化有显著影响。在瓶子试验中，氧气消耗和干木重量损失在40°C时最大。微生物生物量在30°C时最高，而50°C显著抑制微生物发育，导致干材失重和耗氧量最低。温度升高至40℃，降解能力部分恢复。在反应器测试中，与50°C相比，40°C表现出更高的失重、二氧化碳释放和微生物生物量。这些结果表明，40°C是BWO的有利温度。我们的初步经济分析表明，与用于家庭供暖的木质颗粒和厌氧消化相比，BWO具有成本效益。本研究所得的见解将对加强木质生物质管理和减少化石燃料的消耗具有重要价值。

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引用次数: 0

Greenhouse gas inventory in three sugarcane production systems in Brazil 巴西三个甘蔗生产系统的温室气体清单

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-01-28 DOI: 10.1016/j.biombioe.2026.109016

Clara Barros Bueno , Eduardo Barretto de Figueiredo , Rafael Gonçalves Peluco , Carlos Eduardo Faroni , Newton La Scala Jr.

The impacts of climate change have induced countries to achieve the Nationally Determined Contributions from the Paris Agreement and to inventory greenhouse gas (GHG) emissions from different sectors. Thus, we characterized the GHG emissions of three production systems of sugarcane for 9 years with a total area of 228 ha to evaluate whether the system with reduced management would also be the least emitting. These systems were classified according to the operations employed in the soil tillage but also due to contrasting crop management practices adopted. Treatments evaluated were conventional (CS), intermediate (IS) and reduced (RS), which also had different dosages and frequency of supplies applied. Methodology to estimate the emissions followed the Intergovernmental Panel on Climate Change (IPCC), and the emission factors (EFs) used were from both regional research (Tier 2) and global factors (Tier 1). The results show that GHG emissions from RS had the lowest emissions per ton of sugarcane harvested with 27.6 kg CO₂e tc⁻¹, due to lower emissions and higher yield, being 18 % lower than emissions from CS and IS, with 33.6 kg CO₂e tc⁻¹ and 33.8 kg CO₂e tc⁻¹, respectively. One of the differences between the management adopted by RS was the largest application of organic fertilizers than synthetic as well as the adoption of controlled traffic. In addition, when comparing emission estimates using Tier 2 with Tier 1, a decrease of 5.6 kg CO₂e tc⁻¹ was observed, which reinforces the importance of using Tier 2 EFs in GHG inventories.

气候变化的影响促使各国实现了《巴黎协定》中的“国家自主贡献”，并对不同行业的温室气体排放进行了盘点。因此，我们对总面积为228 ha的3个甘蔗生产系统9年的温室气体排放进行了表征，以评价管理减少的系统是否也是排放最少的系统。这些系统根据土壤耕作中采用的操作进行分类，但也根据所采用的不同作物管理做法进行分类。评估的处理有常规（CS）、中间（IS）和简化（RS），它们也有不同的剂量和使用频率。估算排放量的方法遵循政府间气候变化专门委员会（IPCC），使用的排放因子（EFs）来自区域研究（第2级）和全球因素（第1级）。结果表明，由于低排放量和高产量，RS的温室气体排放量最低，为27.6 kg CO2e tc - 1，比CS和IS的排放量分别为33.6 kg CO2e tc - 1和33.8 kg CO2e tc - 1低18%。RS所采用的管理方法的一个不同之处是有机肥的施用比合成肥的施用要多，并采用管制交通。此外，当比较使用Tier 2和Tier 1的排放估计值时，观察到减少了5.6 kg CO2e tc - 1，这加强了在温室气体清单中使用Tier 2 EFs的重要性。

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引用次数: 0

Synergistic enhancement of energy recovery during co-pyrolysis of excavated waste and municipal solid waste 挖掘垃圾与城市生活垃圾共热解过程中能量回收的协同增强

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-01-28 DOI: 10.1016/j.biombioe.2026.108986

Yunan Sun , Mingya Zhu , Hao Li , Jian Li , Junyu Tao , Zhanjun Cheng , Beibei Yan , Guanyi Chen

Landfill-mined excavated waste (EW) contains aged plastics, textiles and humified organics that are difficult to recover mechanically yet retain considerable chemical energy. Co-pyrolysis with municipal solid waste (MSW) offers a practical route for energy recovery from EW during landfill reclamation, however, the synergistic effects of EW-MSW co-pyrolysis and the interactions among their major components remain insufficiently understood. In this work, EW-MSW blends were investigated using thermogravimetry coupled with Fourier-transform infrared spectroscopy and mass spectrometry (TG-FTIR/MS) together with iso-conversional kinetic analysis. A synergy window was observed at 40–60 wt% MSW, where the mean apparent activation energy decreased by ∼13–23 % relative to EW, while the TG-derived volatile fraction at 10 °C min⁻¹ remained at ∼74–77 wt%, indicating facilitated devolatilization without a marked loss of volatiles. Based on the evolution profiles of selected FTIR bands and MS fragments, increasing EW in the blends enhanced hydrocarbon-related signals (C₂-C₄ fragments) and reduced NH3- and HCl-related signals compared with MSW. Representative component-pair experiments further suggested that the plastic fraction in EW dominated light-hydrocarbon formation, whereas textiles contributed marginally to hydrocarbon evolution. The resulting char exhibited a high fixed-carbon content (∼60–65 wt%), indicating potential for further valorization. Overall, EW-MSW co-pyrolysis within the identified blending window can improve process reactivity while shifting volatiles toward more combustible hydrocarbon-rich profiles, supporting energy-oriented landfill-mining and decentralized waste-to-energy applications.

垃圾填埋场开采的挖掘废物（EW）含有老化的塑料，纺织品和腐殖化的有机物，难以机械回收，但仍保留相当大的化学能。与城市生活垃圾共热解为垃圾填埋过程中EW-MSW的能量回收提供了一条可行的途径，然而EW-MSW共热解的协同效应及其主要组分之间的相互作用尚不清楚。本文采用热重法、傅里叶变换红外光谱和质谱法（TG-FTIR/MS）以及等转换动力学分析对EW-MSW共混物进行了研究。在40-60 wt%的MSW下观察到一个协同窗口，其中平均表观活化能相对于EW降低了~ 13 - 23%，而tg衍生的挥发分在10°C min - 1下保持在~ 74-77 wt%，表明在没有明显挥发分损失的情况下促进了脱挥发。根据选定的FTIR波段和MS片段的演化曲线，与生活垃圾相比，增加EW增强了烃相关信号（C2-C4片段），降低了NH3-和hcl相关信号。具有代表性的组分对实验进一步表明，EW中塑料组分对轻烃的形成起主导作用，而纺织组分对烃的演化起次要作用。所得炭具有较高的固定碳含量（~ 60-65 wt%），表明进一步增值的潜力。总的来说，在确定的混合窗口内，EW-MSW共热解可以提高工艺反应性，同时将挥发物转移到更可燃的富含碳氢化合物的剖面，支持以能源为导向的垃圾填埋场开采和分散的废物转化为能源应用。

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引用次数: 0

Assessing phase behavior of pyrolytic lignin in fast pyrolysis bio-oil via advanced distillation curve 利用先进蒸馏曲线评价快热解生物油中热解木质素的物相行为

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-01-28 DOI: 10.1016/j.biombioe.2026.109009

Ana C.C. Araujo , Frederico G. Fonseca , Nicolaus Dahmen , Axel Funke

Fast pyrolysis bio-oil (FPBO) holds promise as a renewable source for fuels and chemicals, yet its complex chemical composition poses significant challenges for efficient product recovery design and further downstream separation. In particular, the high molecular weight pyrolytic lignin fraction remains difficult to characterize, as its composition is largely unknown and its thermodynamic behavior poorly described. To improve understanding, the vapor-liquid equilibrium (VLE) behavior of FPBO was investigated, focusing on the pyrolytic lignin. A lignin-derived FPBO was selected for the study in order to minimize the influence of carbohydrate components of biomass. Advanced distillation curve (ADC) experiments were conducted to obtain thermodynamic data, which was then compared to simulations in which the FPBO was modeled as a surrogate mixture. To represent the pyrolytic lignin (PL) in the mixture, a range of surrogate molecules, from dimers to tetramers with varied inter-unit linkages and functional groups, were evaluated to find which structure best represents the PL in VLE calculations. Among the structures tested, dimers featuring biphenyl inter-unit linkages provided the best overall agreement to the experimental values. In general, dimers were more suitable for simulation, as some of the trimers and tetramers faced convergence issues and simulation errors. The effect of thermodynamic model was also taken into consideration, comparing the Ideal equilibrium model, the UNIFAC-Dortmund (DMD) activity coefficient method, and the Peng-Robinson Boston-Mathias (PR-BM) equation of state. The findings underscore the importance of surrogate and model selection and provide guidance for optimizing FPBO fractionation and upgrading.

快速热解生物油（FPBO）有望成为燃料和化学品的可再生能源，但其复杂的化学成分给高效的产品回收设计和进一步的下游分离带来了重大挑战。特别是，高分子量热解木质素组分仍然难以表征，因为它的组成在很大程度上是未知的，其热力学行为描述得很差。为了提高认识，研究了FPBO的气液平衡（VLE）行为，重点研究了热解木质素。为了最大限度地减少生物质碳水化合物成分的影响，选择了木质素衍生的FPBO进行研究。通过高级蒸馏曲线（ADC）实验获得热力学数据，然后将其与FPBO作为替代混合物建模的模拟结果进行比较。为了表示混合物中的热解木质素（PL），评估了一系列替代分子，从二聚体到四聚体，具有不同的单元间连接和官能团，以找到在VLE计算中最能代表PL的结构。在所测试的结构中，具有联苯单元间连接的二聚体与实验值提供了最佳的总体一致性。一般来说，二聚体更适合模拟，因为一些三聚体和四聚体面临收敛问题和模拟误差。同时考虑了热力学模型的影响，比较了理想平衡模型、unfacd - dortmund （DMD）活度系数法和Peng-Robinson Boston-Mathias （PR-BM）状态方程。研究结果强调了替代剂和模型选择的重要性，并为优化FPBO分馏和升级提供了指导。

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引用次数: 0

Enhancement of photothermal conversion and thermal conductivity in biochar-based composite PCM: Dual impact of MXene and MWCNT 增强生物炭基复合材料PCM的光热转换和导热性：MXene和MWCNT的双重影响

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-01-28 DOI: 10.1016/j.biombioe.2026.109014

Ge Zhu , Qianqian Yin , Zeren Rao , Ruikun Wang , Zhenghui Zhao , Jianqiang Li

Phase change energy storage technology is an important means of efficient energy utilization. To enhance the competitiveness of biochar-based composite phase change materials (PCMs), this study improves the encapsulation capability of white pine biochar through oleophobic modification while incorporating MXene and multi-walled carbon nanotubes (MWCNT) to enhance the photothermal conversion capability and thermal conductivity of the carbon materials. The resultant supporting material, BC-MM, was successfully combined with paraffin wax (PW) to create an enhanced composite PCM (PW/BC-MM), exhibiting a melting enthalpy of 117.0 J/g. Furthermore, the composite exhibits a degree of supercooling that is higher than that of pure PW. This phenomenon is attributed to the nanoconfinement effect of the biochar mesopores, confirming effective physical encapsulation. Results indicate that the PW/BC-MM composite achieved a high PW loading of 88.16 % with an encapsulation efficiency of 85.18 %. Moreover, the thermal conductivity of PW/BC-MM reached 0.571 W/(m·K), representing a 313.77 % enhancement over pure PW. In the photothermal conversion capability test, the temperature change of PW/BC-MM is 22.1 °C higher than that of the unenhanced composite PCM (PW/BC). Additionally, tests on UV–visible light absorption indicate that the incorporation of the enhanced materials significantly improves the radiation absorption capability of biochar. BC-MM exhibits absorption increases of 21.16 % and 30.67 % in the visible and NIR regions, respectively, compared to oleophobic biochar (BC). Therefore, the biochar-based composite PCM prepared in this study possesses good photothermal conversion capability and thermal conductivity, resulting in a broader application scope.

相变储能技术是能源高效利用的重要手段。为了提高生物炭基复合相变材料（PCMs）的竞争力，本研究通过疏油改性提高白松生物炭的包封能力，同时加入MXene和多壁碳纳米管（MWCNT）提高碳材料的光热转换能力和导热性。所得到的支撑材料BC-MM成功地与石蜡（PW）结合，形成了一种增强的复合PCM (PW/BC-MM)，熔融焓为117.0 J/g。此外，复合材料表现出比纯PW更高的过冷程度。这种现象归因于生物炭介孔的纳米约束效应，证实了有效的物理包封。结果表明，PW/BC-MM复合材料的包封效率为85.18%，包封量为88.16%。此外，PW/BC-MM的导热系数达到0.571 W/(m·K)，比纯PW提高了313.77%。在光热转换能力测试中，PW/BC- mm的温度变化比未增强的复合PCM （PW/BC）高22.1℃。此外，紫外-可见光吸收测试表明，增强材料的掺入显著提高了生物炭的辐射吸收能力。BC- mm在可见光区和近红外区吸收比疏油生物炭（BC）分别提高了21.16%和30.67%。因此，本研究制备的生物炭基复合PCM具有良好的光热转换能力和导热性，具有更广阔的应用范围。

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引用次数: 0

Characterization and evaluation of microbial biomass generated in gas fermentation process as a unique feed ingredient for meat type chickens 肉鸡独特饲料原料气体发酵过程中微生物生物量的特性与评价

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2026-01-28 DOI: 10.1016/j.biombioe.2026.109022

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引用次数: 0