Biomass & Bioenergy最新文献_第6页

Thermal degradation of peeled cotton stalk with thermogravimetry/fourier transform infrared analysis and shuffled complex evolution algorithm 利用热重/傅立叶变换红外分析和洗牌复合进化算法分析去皮棉秆的热降解过程

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-04-06 DOI: 10.1016/j.biombioe.2025.107853

Qian Xie , Fahang Liu , Yu Zhong , Changhai Li , Yanming Ding

Cotton is one of the most important crops globally and is widely planted. This study systematically investigated the pyrolysis characteristics and product distribution of peeled cotton stalks using thermogravimetry/Fourier transform infrared analysis (TG-FTIR) at heating rates ranging from 5 to 60 K/min. Kinetic parameters were estimated using the two model-free methods, and the results revealed that the activation energy for pyrolysis varied between 182.97 and 213.11 kJ/mol. The three-component parallel reaction model, combined with the Shuffled Complex Evolution algorithm, was applied to perform inverse modeling of the experimental data. The corresponding exact kinetic parameters for independent hemicellulose, cellulose and lignin were obtained. The results revealed that the predicted values based on the optimized kinetic parameters were in good agreement with the experimental data. Ultimately, the blind prediction of the experimental curves at extra heating rates further confirmed the precision and suitability of the optimized kinetic parameters. The FTIR analysis indicated that the absorption spectra related to the peaks remained largely consistent at various heating rates. The evolution patterns of the gas components aligned with the trends observed in the derivative thermogravimetric curves, with the produced gases in the following order: CO₂, formaldehyde, methanol, CO, and finally methane.

棉花是全球最重要的农作物之一，被广泛种植。本研究采用热重/傅立叶变换红外分析法（TG-FTIR），在加热速率为 5 至 60 K/min 的条件下，系统地研究了去皮棉秆的热解特性和产物分布。使用两种无模型方法估算了动力学参数，结果表明热解活化能在 182.97 至 213.11 kJ/mol 之间变化。三组分平行反应模型结合洗牌复杂进化算法对实验数据进行了逆建模。得到了独立的半纤维素、纤维素和木质素的相应精确动力学参数。结果表明，基于优化动力学参数的预测值与实验数据十分吻合。最后，在额外加热速率下对实验曲线的盲预测进一步证实了优化动力学参数的精确性和适用性。傅立叶变换红外分析表明，在不同的加热速率下，与峰值相关的吸收光谱基本保持一致。气体成分的演变模式与导数热重曲线中观察到的趋势一致，产生的气体按以下顺序排列：二氧化碳、甲醛、甲醇、一氧化碳，最后是甲烷。

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引用次数: 0

Sustainable biodiesel synthesis using bamboo leaves ash doped with Anser cygnoides eggshell derived CaO (BLA@SiO2-CaO) green catalyst: Characterization and optimization study

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-04-05 DOI: 10.1016/j.biombioe.2025.107815

Mohd. Rakimuddin Khan, Huirem Neeranjan Singh, Wangkhem Robinson Singh

The increasing demand for sustainable and renewable energy sources has led to significant research in biodiesel production. This study explores the synthesis of castor biodiesel using a novel bamboo leaves ash (BLA@SiO₂) doped with swan goose (Anser cygnoides) eggshell derived CaO (BLA@SiO₂-CaO) as green catalyst. Anser cygnoides eggshells were calcinated at 900°C for 3 h, and doped with (BLA@SiO₂) via wet impregnation method at a mixing ratio of BLA@SiO₂:CaO – 1:2, 1:3, and 1:4 wt%. The catalysts were characterized using X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, and energy dispersive X-ray to determine their structural and morphological properties. Box-Behnken design-response surface methodology was employed for optimizing biodiesel production process with four input factors viz. methanol: oil molar ratio, catalyst concentration, reaction temperature and reaction time. Results indicated that BLA@SiO₂-CaO catalyst exhibited excellent catalytic activity producing maximum biodiesel yield of 96.59

\pm 0.95

% under the optimal conditions of 11.49:1 methanol to oil ratio, 5.27 wt% catalyst concentration, 60.24°C reaction temperature, and 1.54 h reaction time. The properties of biodiesel, including acid value (0.48 mg KOH/g), density (0.87 g/cm³), calorific value (40.5 MJ/kg), flash point (166°C), ester content (96.9 wt%), and kinematic viscosity (4.7 mm²/s) are found to be within the ASTM-D6751 and EN 14214 standard limits. The synthesized BLA@SiO₂-CaO catalyst could be reused for up to seven cycles with yield above 84.2

\pm 1.1

%. This study highlights the potential of utilizing waste materials like bamboo leaves ash and swan goose eggshells as a cost-effective and eco-friendly catalyst in biodiesel production.

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引用次数: 0

Unveiling the efficacy of TiO2-mediated calcareous nanocatalyst towards cost-effective biodiesel synthesis

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-04-05 DOI: 10.1016/j.biombioe.2025.107852

Rashid Imran Ahmad Khan , Rhithuparna D. , Abdul Razzaq Khan , Sadaf Ahmad , Samuel Lalthazuala Rokhum , Gopinath Halder

The global energy matrix, predominantly fuelled by fossil sources constituting 85 % of consumption, confronts critical ecological ramifications, including prodigious greenhouse gas emissions precipitating climate change and pervasive pollution. This probe elucidates the mechanistic proficiency and economic viability of TiO₂-augmented CaO-derived nano-catalysts for biodiesel production from Brassica napus oil. Synthesized via sol-gel techniques with variable precursor concentrations and calcination temperatures, these nano-catalysts were rigorously characterized using UV spectroscopy, FTIR, SEM, XRD, zeta potential, EDAX, and particle size analysis. The utmost biodiesel yield of 95.87 % was attained utilizing response surface methodology under a 2.25-h reaction interval with a 5 % catalyst weight, a 1:12 oil-to-methanol ratio, and a temperature of 60 °C. Thermodynamic and kinetic examinations revealed the transesterification reaction to be endothermic following pseudo-first-order kinetics. The catalyst exhibited notable reusability, maintaining a conversion efficiency of 76.86 % after five consecutive cycles. The characteristics of the produced biodiesel met the required standards, with production costs calculated at $0.78 per litre and $7.0 per kilogram of TiO₂-CaO catalyst, underscoring its economic feasibility. This research accentuates the TiO₂-CaO nanocatalyst's potential in mitigating the environmental and economic detriments associated with fossil fuel dependency. Finally, the study provided future perspectives by identifying gaps highlighted in recent bibliometric analyses of the reported research.

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引用次数: 0

Five-year impacts of biomass crop monoculture on soil enzyme activity, nitrogen pools, and other soil health indicators

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-04-05 DOI: 10.1016/j.biombioe.2025.107856

Nevien Elhawat , Éva Domokos-Szabolcsy , Szilvia Veres , Miklós G. Fári , Tarek Alshaal

Soil health and nitrogen cycling are critical for sustainable biomass production, yet the long-term effects of monoculture biomass cropping on these factors remain underexplored. This study examines the five-year monoculture cultivation effects of giant reed (Arundo donax L.), miscanthus (Miscanthus x giganteus), and sida (Sida hermaphrodita) on soil biochemical properties, nitrogen species, and biomass yield stability under field conditions. Soil samples collected in autumn 2014 and spring 2015 revealed significant seasonal and crop-specific impacts on soil health indicators. Giant reed cultivation resulted in the highest urease activity in autumn (346 μg NH₄⁺ g⁻¹ soil h⁻¹), supporting enhanced nitrogen cycling, while miscanthus increased soil organic matter (SOM) to 4.77 % in spring, aiding carbon sequestration. Sida contributed to the highest dehydrogenase activity, indicating robust microbial activity, alongside increased organic nitrogen (4.92 mg kg⁻¹) and total nitrogen levels (17.0 mg kg⁻¹) in spring. Soil respiration and electrical conductivity varied by season, with pH values slightly higher in spring. Across all crops, nitrogen forms (nitrate, ammonium, and organic nitrogen) were generally higher in spring than autumn, highlighting seasonal dynamics. Yield stability was greatest in giant reed (2.01 kg m⁻² on average), while miscanthus and sida averaged 1.62 and 0.86 kg m⁻², respectively. The findings underscore these crops' potential for sustainable biomass production and improved soil health in low-input systems.

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引用次数: 0

Hydrothermal carbonization of swine manure in a continuous flow reactor pilot plant with process water recycling

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-04-05 DOI: 10.1016/j.biombioe.2025.107854

R.P. Ipiales , E. Diaz , M.A. de la Rubia , J.J. Rodriguez , A.F. Mohedano

This paper deals with hydrothermal carbonization (HTC) of swine manure in a pilot plant setup operating in continuous mode. Two temperatures (210 °C and 250 °C) were tested and recycling of the liquid fraction was studied to improve the quality of the resulting hydrochar. The hydrochars obtained at 210 °C fulfill the criteria to be used as solid biofuels (ISO 17225–8:2023). Increasing the reaction temperature led to a dramatic reduction of hydrochar yield (from 50 to 20 %) in conventional HTC (with tap water), accompanied by a moderate improvement of higher heating value (HHV, 18.2–20.4 MJ/kg), which decreased the energy yield (from 52.2 % to 23.8 %). Process water recycling significantly improved the hydrochar yield, reaching more than 80 % and 55 % at 210 °C and 250 °C, respectively, because of the formation of secondary hydrochar. C content and HHV also increased, giving rise to substantially higher energy recovery, which surpassed 93 % after four recycling tests at 210 °C. Fouling and alkali indexes of hydrochars showed much lower values than those of the feedstock mainly attributed to the solubilization of Na and K. At 210 °C, process water recycling favored a further reduction of those indexes. N and P were largely transferred to the liquid fraction, particularly the latter. Zn and Cu were, by far, the most abundant heavy metals in hydrochars, with a Zn content being slightly above the value established in Decision (EU) 2022/1244 for their application as a soil amendment.

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引用次数: 0

Bio-jet fuels from photosynthetic microorganisms: A focus on downstream processes

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-04-04 DOI: 10.1016/j.biombioe.2025.107833

Giovanni Antonio Lutzu , Luca Usai , Adriana Ciurli , Carolina Chiellini , Fabrizio Di Caprio , Francesca Pagnanelli , Ali Parsaeimehr , Ilze Malina , Kristaps Malins , Bartolomeo Cosenza , Massimiliano Fabbricino , Alessandra Cesaro , Grazia Policastro , Giacomo Cao , Alessandro Concas

The aviation industry is a "hard to electrify" sector with limited possibilities for alternative fuels such as green hydrogen. Therefore, there is a call for sustainable fuel alternatives which is driving intensive research into bio-jet fuels (BJF) that could be used in aviation, without revamping the aircraft fleets and the aviation infrastructures. This review evaluates the potential of photosynthetic microorganisms, focusing on the most challenging downstream processes, i.e. bio-oil production and its catalytic upgrade. The main bottlenecks of such processes are identified, and the most recent solutions, offered to overcome them, are critically reviewed. Finally, a statistical analysis of the key characteristics of current BJF derived from microalgae and cyanobacteria is presented, along with a discussion on their suitability for the aviation industry and the primary areas for improvement.

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引用次数: 0

Thermochemical conversion of bioplastics: Evolved gas analysis and kinetics factors for polylactic acid (PLA) - waste biomass mixture

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-04-03 DOI: 10.1016/j.biombioe.2025.107848

Muhammad Rabah, Labeeb Ali, Mohamed Shafi Kuttiyathil, Mohammednoor Altarawneh

Polylactic acid (PLA) is the highest produced bioplastic globally but facing end-life disposal challenges. Pyrolysis proves to be a viable option, but the recovered product profile is not desirable in terms of quality and value. Date Pits (DP), a waste byproduct chemically rich with lignocellulosic fragments, can provide unique carbon-rich precursors which are highly desirable in the pyrolysis process. This study aims to investigate the synergistic effect of DP addition on PLA pyrolysis products. Thermogravimetric data demonstrates that PLA mixing with DP promotes char formation, initiates degradation at lower temperatures, and decreases the peak decomposition temperature (T_p) from 362 °C to 343 °C. Primary pyrolysis occurs in the range of (200–400 °C) with 75.5 % weight loss and low heating rate shifts T_p toward lower temperatures by averting the development of the thermal lag effect. Chemical structure analysis through FTIR shows that DP addition promotes controlled volatile release through PLA depolymerization hence yielding more uniformed and distinguished peaks for hydroxyl, phenols, and ester-containing groups. Moreover, it promoted free radical reactions that enhanced lactide recovery by restricting aldehyde formation. GCMS profiling indicates that pure PLA pyrolysis majorly yieldes lactide (3,6-Dimethyl-1,4-dioxane-2,5-dione). While the copyrolysis with date pits diversifies this product profile with the production of hydrocarbons (heptane and decane), aromatics (xylene, toluene and styrene), and furans which are highly valued in biorefineries, as drop-in fuels and in petrochemical industries. Kinetic analysis shows that the PLA/DP co-pyrolysis mixture reduces activation energies (E_a) by 18 % and also reduces the thermodynamic parameters.

聚乳酸（PLA）是全球产量最高的生物塑料，但却面临着生命末期处置的挑战。事实证明，热解是一种可行的选择，但回收产品的质量和价值并不理想。枣核（DP）是一种富含木质纤维素碎片化学成分的废弃副产品，可提供独特的富碳前体，在热解过程中非常理想。本研究旨在探讨添加 DP 对聚乳酸热解产物的协同效应。热重数据表明，聚乳酸与 DP 混合可促进炭的形成，在较低温度下启动降解，并将分解峰值温度（Tp）从 362 °C 降低到 343 °C。初级热解发生在（200-400 ℃）范围内，重量损失率为 75.5%，低加热速率避免了热滞后效应的产生，从而使 Tp 向低温方向移动。通过傅立叶变换红外光谱进行的化学结构分析表明，DP 的添加可通过聚乳酸的解聚作用促进受控的挥发性释放，从而使羟基、酚类和含酯基团的峰值更均匀、更明显。此外，DP 还能促进自由基反应，通过限制醛的形成来提高内酯的回收率。GCMS 分析表明，纯聚乳酸热解主要产生内酯（3,6-二甲基-1,4-二氧六环-2,5-二酮）。而与枣核一起进行的复制热解则使产品结构多样化，产生了碳氢化合物（庚烷和癸烷）、芳烃（二甲苯、甲苯和苯乙烯）和呋喃，这些物质在生物炼油厂、无铅燃料和石化工业中具有很高的价值。动力学分析表明，聚乳酸/DP 共热解混合物可将活化能（Ea）降低 18%，并降低热力学参数。

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引用次数: 0

Advancing marine cellulose-based packaging: A review on sustainable biorefinery perspectives

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-04-03 DOI: 10.1016/j.biombioe.2025.107849

Senthilkumar Palanisamy , Barani Kumar Saravana Kumar , Gayathri Sivakumar , Sakshadhan Selvan , Jintae Lee , Devaraj Bharathi

The growing environmental effect of traditional plastic packaging has caused a growing search for sustainable alternatives, and cellulose has emerged as an attractive option due to its mechanical strength, biodegradability, and renewable nature. Marine-derived cellulose from algae, mangroves, and marine sediments remains poorly understood despite its unique structural and functional advantages, whereas a significant amount of research has been conducted on terrestrial cellulose sources including plants and agricultural waste. This review emphasizes marine cellulose's potential for biodegradable and functional food packaging applications through examining its biological origins, isolation techniques, and physicochemical characteristics. The increased moisture resistance, biodegradability, and flexibility of marine-derived cellulose are highlighted in compared to terrestrial cellulose, making it an excellent option for sustainable packaging. It remains a number of challenges to be resolved, such as low extraction efficiency, expensive processing, and inconsistent physicochemical characteristics. Unlocking the full potential of marine cellulose requires addressing these technical and financial obstacles through scalability studies, material functionalization, and green extraction techniques. This review provides a comprehensive evaluation of marine cellulose as an alternative packaging material and identifies key research gaps and future directions. By bridging the knowledge gap in marine cellulose research and its industrial applications, this study contributes to the ongoing efforts to reduce plastic pollution, promote a circular bioeconomy, and enhance environmental sustainability.

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引用次数: 0

Exploring the potential of novel feedstock (Caesalpinia bonduc seeds) for circular biodiesel production using seed shell-derived green nanocatalysts

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-04-02 DOI: 10.1016/j.biombioe.2025.107847

Roshan Amjad , Mushtaq Ahmad , Shazia Sultana , Mamoona Munir , Muhammad Ishtiaq Ali , Mohamed M. El-Toony , Nizomova Maksuda Usmankulovna , Burkhan Avutkhanov , Ahmad Mustafa

Current work focuses on the investigation of newly explored Caesalpinia bonduc (L.) seed oil as an efficient and oil rich (45 % w/w) source for producing user friendly biodiesel during transesterification reaction. The whole process was facilitated using green nanocatalyst (K₂O) synthesized from discarded Caesalpinia bonduc seed coat as reducing agent. About 98.27 % Caesalpinia biodiesel yield was attained with 1:6 oil to methanol, 0.15 (wt. %) K₂O nanocatalyst at 120 °C temperature and 120 min interval. GCMS studies of Caesalpinia biodiesel depicts the presence of seven major peaks with retention time (12.640, 17.072, 18.722, 18.816, 18.981 and 23.921 min) confirms the successful conversion of Caesalpinia oil to corresponding biodiesel. The fuel properties of Caesalpinia biodiesel were 70 °C Flash point, 0.36 mgKOH/g Acid number, 0.89 kg/L Density, 3.52 Kinematic viscosity, 0.0063 % Sulphur, −12 °C Pour point, −8 °C Cloud Point are in excellent hormony with global bifuel standards. The green K₂O nanocatalyst exhibits excellent reusability for up to 9th runs exhibiting its maximum reactivity up to three cycles. The outcomes of this investigation led to the conclusion that the non-conventional and non edible oil seeds of Caesalpinia bonduc (L.) Roxb and green K₂O nanocatalyst is a viable, low-cost and sustainable and highly reactive contenders for future biodiesel industry with the potential to mitigate energy glitches along with positive and healther socio economic wellbeing of community at global level.

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引用次数: 0

Maximizing energy recovery from food waste through integrated microalgae harvest using lipid-rich particles followed by anaerobic digestion of biomass residues

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-04-02 DOI: 10.1016/j.biombioe.2025.107850

Adel W. Almutairi

The present study evaluated the potential of algae-based integrated food waste biorefinery to produce valuable bio-based compounds. Lipid-rich particles (FW-LRP) were applied for microalgae harvest, followed by using the solid fraction of food waste (FW-S) for biogas production. The FW-LRP showed 57.2 % higher lipid content with 73.3 % higher polyunsaturated fatty acid compared to food waste mixture. When used for microalgae harvest, FW-LRP demonstrated 92.7 % harvest efficiency with improved biodiesel quality. The highest biodiesel yield of microalgae harvested by FW-LRP was 21.28 g L⁻¹, showing higher cetane number of 57.49 and lower iodine value of 72.8 g I₂ per 100 g oil. Furthermore, co-digestion of microalgal lipid-free residues with FW-S yielded biogas of 407.3 L kg⁻¹ VS (with 70.9 % biomethane proportion). These findings confirm the high potential of food waste valorization in microalgae industry to improve biodiesel characteristics and boost anaerobic digestion processes, presenting a promising outlook for sustainable food waste management strategies.

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引用次数: 0