Biomass & Bioenergy最新文献_第10页

Comprehensive study on morphology, composition, and structure evolutions of different biomass particles with torrefaction and low-temperature carbonization 综合研究不同生物质颗粒在焙烧和低温碳化过程中的形态、组成和结构演变

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-01 DOI: 10.1016/j.biombioe.2024.107587

Zhongjie Shen , Zizheng Dong , Haigang Zhang , Xiaolei Guo , Haifeng Liu

Biomass torrefaction and carbonization pretreatments are common and essential to the subsequent utilization in the industry, such as gasification and combustion. The current work conducted a comprehensive investigation on the morphology, composition, and structure evolutions of five biomass particles during the torrefaction and low-temperature carbonization processes, with in situ experimental methods and multiple analytical technique. The color and morphological changes of biomass particles during the heating process were obtained by in-situ experiments. The results showed that a micron biomass particle performed a high shrinkage ratio, ranging from 20 to 45 vol% during the torrefaction and low-temperature carbonization processes, which the ratio was found to be lower than 5 % in the heating stage. With the increase of the pretreatment temperature, the surface fragments of particles increased and the structural damage was intensified. The mass loss, heating value, and energy yield was also compared with each biomass and related to the pretreatment temperatures. The changes of the hemicellulose, cellulose, and lignin contents with effects of temperature and biomass type displayed similar reducing tendency, with the analysis of functional group variation. In addition, an exponential relationship between the shrinkage ratio of the biomass particle and the total mass content change of extractives, hemicellulose, and lignin was found. Finally, the comprehensive mechanism diagram of the morphology, composition, and structure evolutions of different biomass particles were proposed.

生物质焙烧和炭化预处理是常见的，对随后的工业利用至关重要，如气化和燃烧。采用原位实验方法和多种分析技术，对五种生物质颗粒在焙烧和低温碳化过程中的形态、组成和结构演变进行了全面研究。通过原位实验获得了生物质颗粒在加热过程中的颜色和形态变化。结果表明，微米级生物质颗粒在焙烧和低温炭化过程中具有较高的收缩率，收缩率在20 ~ 45 vol%之间，而在加热阶段收缩率低于5%。随着预处理温度的升高，颗粒表面碎片增多，结构损伤加剧。并比较了各生物质的质量损失、热值和产能与预处理温度的关系。半纤维素、纤维素和木质素含量随温度和生物量类型的变化均表现出相似的降低趋势，并进行了官能团变化分析。此外，生物质颗粒的收缩率与萃取物、半纤维素和木质素的总质量含量变化呈指数关系。最后，提出了不同生物质颗粒形态、组成和结构演变的综合机理图。

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引用次数: 0

Multi-objective optimization of sustainable aviation fuel production pathways in the U.S. Corn Belt 美国玉米带可持续航空燃料生产路径的多目标优化

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-01 DOI: 10.1016/j.biombioe.2025.107590

Ece Ari Akdemir , Jordan Kern , Jack P. Smith , Braden J. Limb , Jason C. Quinn , John L. Field , Taylor Pack

As a potential source of low-carbon transportation energy, biofuels offer certain advantages over vehicle electrification (e.g., lower societal vulnerability to grid failures, and improved range of sustainable aviation), but also several challenges, including cost, carbon intensity, and land usage. There are also well-founded concerns that biofuel supply chains could be disrupted if extreme weather events impact feedstock yields. In this paper, we explore the use of multi-objective optimization to identify biofuel production pathways that balance cost, greenhouse gas emissions, and supply vulnerability to extreme weather. We compare the use of three different many-objective evolutionary algorithms and linear programming in optimizing biomass cultivation decisions in the U.S. Corn Belt under weather uncertainty using historical, modeled, and synthetic yield data. We consider four feedstock choices (corn, soy, switchgrass, and algae) with two land types (agricultural and marginal lands) and evaluate decisions using three alternative spatial resolutions (ranging from the USDA agricultural district level to the state level). Results show that feedstock choice is the primary driver of objective performance (i.e., the position and shape of 3D, approximate Pareto frontiers). Spatial diversification is a less effective tool in reducing exposure to weather-caused drops in crop yield.

作为一种潜在的低碳运输能源，生物燃料与汽车电气化相比具有一定的优势（例如，降低社会对电网故障的脆弱性，改善可持续航空的范围），但也存在一些挑战，包括成本、碳强度和土地使用。人们也有充分理由担心，如果极端天气事件影响原料产量，生物燃料供应链可能会中断。在本文中，我们探索了使用多目标优化来确定生物燃料生产途径，以平衡成本，温室气体排放和极端天气的脆弱性。我们比较了三种不同的多目标进化算法和线性规划在天气不确定性下优化美国玉米带生物量种植决策的使用，使用历史、模型和合成产量数据。我们考虑了两种土地类型（农业用地和边际用地）的四种原料选择（玉米、大豆、柳枝稷和藻类），并使用三种可选的空间分辨率（从美国农业部农业区级别到州级别）评估决策。结果表明，原料选择是目标性能的主要驱动因素（即三维近似帕累托边界的位置和形状）。空间多样化在减少气候导致的作物产量下降方面效果较差。

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引用次数: 0

Combustion characteristics of fuel flexibility with coal–biomass–ammonia co-firing in a circulating fluidized bed system

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-01 DOI: 10.1016/j.biombioe.2025.107666

Seong-Ju Kim , Sung-Jin Pak , Sung-Ho Jo , Ho-Tae Im , Hookyung Lee , Sang-Jun Yoon , Ho-Won Ra , Sung-Min Yoon , Dongfang Li , Tae-Young Mun

Biomass and ammonia are promising resources for reducing greenhouse gas (GHG) emissions from coal-fired power plants. Some of these plants are co-firing biomass with coal. This study examines coal–biomass–ammonia co-firing in a circulating fluidized bed system, focusing on temperature and pressure profiles in the combustor, pollutant emissions, and combustion efficiencies. GHG emissions, specifically CO₂ and N₂O, were compared based on biomass ratio (8 % lower and 23 % higher) and the ammonia supply position in the dense bed zone (DBZ) and wind box (WB). When ammonia was supplied to the DBZ at a lower biomass co-firing ratio, CO emissions increased to 213.4 ppm due to the competition between coal and ammonia combustion. In contrast, ammonia supplied to the WB at a higher biomass ratio (22–23 % as a thermal base) resulted in the lowest CO emissions at 6.6 ppm, reducing heat losses. The N₂O concentration from higher biomass co-firing with NH₃ and coal when injected at WB was lower than that from a lower biomass ratio (8 % as a thermal base). This study highlights the potential of coal–biomass–ammonia co-firing to reduce GHG emissions while maintaining combustion efficiency, with minimal CO impact, offering a sustainable solution for bioenergy generation in coal-fired power plants.

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引用次数: 0

Research progress on the preparation of high-value carbon materials by biomass pyrolysis 生物质热解制备高值碳材料的研究进展

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-01 DOI: 10.1016/j.biombioe.2024.107520

Pan Li , Yasen Chen , Yucheng Lin , Wei Chen , Junhao Hu , Wei Yang , Chun Chang , Shusheng Pang

The production of high-value carbon materials via biomass pyrolysis has gained significant attention in recent research due to its efficiency and sustainability. Unlike the resource-intensive processes for obtaining carbon materials from fossil fuels, biomass pyrolysis provides an alternative that can utilize renewable and abundant sources at lower cost. Although biomass pyrolysis often produces a broad range of products, making precise control over specific carbon materials challenging, it offers flexibility in generating various high-value materials, including activated carbon, carbon nanotubes, graphene, carbon foams, and carbon quantum dots. This review comprehensively examines the past decade's advancements in preparing these carbon materials through biomass pyrolysis. It introduces the unique properties and applications of these materials and explores how template synthesis, metal/heteroatom doping, and microwave-assisted pyrolysis can influence material characteristics. Additionally, the review addresses existing challenges and outlines future research directions aimed at optimizing biomass pyrolysis pathways and maximizing the efficiency and utility of the resulting carbon materials. Finally, the potential for biomass pyrolysis to shift production from fossil-based resources to waste biomass is highlighted, supporting sustainability and the transition to renewable resources.

生物质热解生产高价值碳材料因其高效和可持续性而受到近年来研究的广泛关注。与从化石燃料中获取碳材料的资源密集型过程不同，生物质热解提供了一种替代方法，可以以较低的成本利用可再生和丰富的资源。尽管生物质热解通常会产生广泛的产品，使得对特定碳材料的精确控制变得困难，但它提供了生产各种高价值材料的灵活性，包括活性炭、碳纳米管、石墨烯、碳泡沫和碳量子点。本文综述了过去十年来通过生物质热解制备这些碳材料的进展。介绍了这些材料的独特性能和应用，并探讨了模板合成、金属/杂原子掺杂和微波辅助热解如何影响材料特性。此外，该综述还解决了现有的挑战，并概述了未来的研究方向，旨在优化生物质热解途径，最大限度地提高所得碳材料的效率和效用。最后，强调了生物质热解将生产从化石资源转向废弃生物质的潜力，支持可持续性和向可再生资源的过渡。

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引用次数: 0

Graphene-like biochars from pyrolysis of sugarcane bagasse and exhausted black acacia bark for the production of supercapacitors 从蔗渣和废黑金合欢树皮热解所得的类石墨烯生物炭用于生产超级电容器

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-01 DOI: 10.1016/j.biombioe.2024.107567

Mayara R. Fornari , Bruna M. Hryniewicz , Tassya T.S. Matos , Juliana Schultz , Marcio Vidotti , Antonio S. Mangrich

Sugarcane bagasse and exhausted black acacia bark biomass residues were pyrolyzed at high temperatures to obtain biochars with structures analogous to graphene oxide, as an economically viable destination for these waste materials. The biomasses were subjected to pretreatment with water and dilute nitric acid, followed by pyrolysis at 900 °C in an atmosphere of isopropanol vapor with N₂. Additionally, pyrolysis was conducted under the same conditions without pretreatment (with isopropanol) and with only a nitrogen flow for comparison. The biochars obtained by pyrolysis with isopropanol presented lower H/C ratios, indicating high graphitization, and more stable O/C ratios, with characteristics of graphene-like material or graphene oxides. The biochars were used to modify electrodes, together with polyaniline (PANI). The electrodes modified with PANI and the biochars with isopropanol vapor showed specific capacitances (C_s) up to 2.7-fold higher than for the electrode modified with PANI alone, with the high C_s values maintained even after 1000 charge and discharge cycles, as well as significantly increased capacitive currents. Pyrolysis with isopropanol proved to be an effective and fast method that conferred different biochar characteristics, compared to the biochars produced by pyrolysis in N₂ alone. These results are promising for the development of high-performance supercapacitors with low production costs.

蔗渣和废弃的黑金合欢树皮生物质残渣在高温下进行热解，以获得具有类似氧化石墨烯结构的生物炭，作为这些废物经济上可行的目的地。用水和稀硝酸对生物质进行预处理，然后在异丙醇蒸汽气氛中与氮气在900℃下热解。此外，在相同的条件下进行热解，没有预处理（异丙醇），只有氮气流进行比较。异丙醇热解得到的生物炭H/C比较低，石墨化程度高，O/C比更稳定，具有类石墨烯材料或氧化石墨烯的特征。生物炭与聚苯胺（PANI）一起用于修饰电极。聚苯胺修饰电极和异丙醇蒸气修饰的生物炭的比电容（Cs）比仅用聚苯胺修饰的电极高2.7倍，即使在1000次充放电循环后仍保持较高的Cs值，并且电容电流显著增加。与仅在N2条件下热解制备的生物炭相比，异丙醇热解是一种有效且快速的热解方法，具有不同的生物炭特性。这些结果为开发低成本的高性能超级电容器提供了前景。

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引用次数: 0

Oxidative electrochemical depolymerization of lignin using highly active self-standing electrocatalysts prepared by electrospinning of lignin 木质素静电纺丝制备的高活性独立电催化剂用于氧化电化学解聚

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-01 DOI: 10.1016/j.biombioe.2024.107560

M. García-Rollán, M. Toscano-de los Riscos, R. Ruiz-Rosas, J.M. Rosas, J. Rodríguez-Mirasol, T. Cordero

Electrooxidative depolymerization of lignin enables obtaining renewable value-added chemicals under soft operation conditions. However, current nickel foam electrodes do not fully utilize their active phase. In this study, non-woven mats consisting of metal-containing carbon nanofibers were prepared by electrospinning of lignin and Ni, Co and/or Pd solutions. These mats, without further processing and additives, were tested as self-standing electrodes in the electrooxidative depolymerization of alkaline kraft lignin solution using a filter press electrolyzer at room temperature. The fibrillar electrocatalyst containing 10 % wt of Ni (CFNi10) showed the most promising results, producing i) up to 77 % of oxygen-rich depolymerized lignin solid, ii) a water-soluble fraction yield up to 19.8 % wt iii) total vanillin yield of 1.1 % wt, using specific charges as low as 250 C/g_lignin, outperforming the commercial nickel foam electrode, and iv) full reusability. Consequently, the activity of the process is improved, while the amount of nickel deployed on the electrochemical cell is notably decreased from 30 down to 0.3 mg/cm². The results of the present paper also demonstrate that lignin electrochemical depolymerization needs to be promoted by reactive oxygen species and/or in-situ generation of hydrogen peroxide.

木质素的电氧化解聚可以在软操作条件下获得可再生的增值化学品。然而，目前的泡沫镍电极并没有充分利用其活性相。在本研究中，以木质素和Ni， Co和/或Pd溶液为原料，静电纺丝制备了含金属碳纳米纤维组成的无纺布席子。这些垫子无需进一步加工和添加剂，在室温下使用压滤式电解槽在碱性硫酸盐木质素溶液的电氧化解聚中作为独立电极进行了测试。含有10%重量镍的纤维状电催化剂（CFNi10）显示出最有希望的结果，1)产生高达77%的富氧解聚木质素固体，2)水溶性部分收率高达19.8%重量，3)总香兰素收率为1.1%重量，使用比电荷低至250℃/木质素，优于商业镍泡沫电极，4)完全可重复使用。因此，该工艺的活性得到了提高，而电化学电池上的镍用量从30 mg/cm2显著降低到0.3 mg/cm2。本论文的结果还表明，木质素的电化学解聚需要活性氧和/或原位生成过氧化氢来促进。

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引用次数: 0

Enhanced recovery of platform chemicals from bio-oil via multistage liquid-liquid extraction: Solvent selection and separation mechanism 多级液-液萃取法提高生物油中平台化学物质的回收率：溶剂选择及分离机理

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-01 DOI: 10.1016/j.biombioe.2024.107575

Sowkhya Naidu , Sivasankar Kakku , Prathap Somu , Jyeshtharaj Joshi , Chiranjeevi Thota , Urmila Diwekar , Abhishek Sharma

The current study used groundnut shell biomass to produce bio-oil using a micro-scale pyrolysis gas chromatography-mass spectrometry (PY-GCMS) and a semi-pilot rotary kiln system. The micro-scale study was employed to understand the impact of temperature on the chemical composition of condensable volatiles. The bio-oil chemical composition was determined using GC-MS. Based on the identified chemical components in the bio-oil, multistage liquid-liquid extraction was conducted using different organic solvents (hexane, ethyl acetate, toluene, and chloroform) to separate the major chemical groups. Results revealed that the predominant chemical groups in the bio-oil were phenolics, ketones, and aromatics. A plausible interaction mechanism between the organic solvents and the chemical groups was proposed. This study provides a basis for selecting appropriate organic solvents for the selective extraction of specific chemical groups.

本研究采用微尺度热解气相色谱-质谱联用（PY-GCMS）和半中试回转窑系统，利用花生壳生物质生产生物油。通过微观尺度的研究，了解温度对可冷凝挥发物化学成分的影响。采用气相色谱-质谱法测定生物油的化学成分。根据生物油中已鉴定的化学成分，采用不同的有机溶剂（己烷、乙酸乙酯、甲苯和氯仿）进行多级液-液萃取，分离主要化学基团。结果表明，生物油中主要的化学基团为酚类、酮类和芳烃类。提出了有机溶剂与化学基团相互作用的合理机理。本研究为选择合适的有机溶剂进行特定化学基团的选择性提取提供了依据。

引用次数: 0

An eco-friendly catalytic pretreatment using recyclable CuFeO2 catalyst for enhancing the production of bio-based ethanol and jet fuel

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-01 DOI: 10.1016/j.biombioe.2025.107668

Rui Zhang , Can Zhu , Yu Jiang , Yuming Ni , Nan Huang , Wanyun Tang , Minghui Fan , Quanxin Li

The development of green and efficient biomass pretreatment methods is of great significance for the conversion of lignocellulosic biomass into biofuels. The main objective of this work is to demonstrate a novel recyclable CuFeO₂ catalytic pretreatment way that can be used to promote the production of bioethanol and bio-jet fuel from corncob. Compared to untreated corncob, the biomass pretreated with CuFeO₂ catalyst showed higher sugar production (39.9 %) and higher ethanol production (35.6 %). Especially, the directional transformation of corncob to bio-jet fuel has been achieved by integrating biomass fermentation and catalytic synthesis process. The ethanol conversion of 94.3 % and jet fuel selectivity of 64.7 % were obtained in the process of biofuel synthesis. Based on biomass characterizations, catalyst characterizations and reactive oxygen species analysis, the possible role and mechanism of the CuFeO₂ catalytic pretreatment were outlined. The CuFeO₂ catalytic pr-treatment can be carried out by using the recyclable catalyst at atmospheric pressure and room temperature, which may provide a useful pretreatment way for promoting the biofuel production from lignocellulosic biomass.

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引用次数: 0

Low-transition temperature mixtures pretreatment and hydrothermal carbonization of corncob residues for CO2 capture materials 低转变温度混合预处理和水热炭化玉米芯渣作为CO2捕集材料

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-01 DOI: 10.1016/j.biombioe.2024.107541

Sanphawat Phromphithak , Thossaporn Onsree , Kaveh Shariati , Samuel Drummond , Tossapon Katongtung , Nakorn Tippayawong , Jennifer Naglic , Jochen Lauterbach

Activated char is one of the most cost-effective absorbents for low-temperature CO₂ capture. Rather than disposing of corncob residues by open-air burning, this study focused on improving corncob residues through pretreatment with low-transition temperature mixtures (LTTM) of choline chloride and glycerol combined with hydrothermal carbonization before being converted to CO₂ capture activated char. Compared to raw corncob residues, cellulose-rich materials (CRMs) from the pretreatment had less thermal stability and substantial changes in cellulose crystallinity and surface functional groups relative to cellulose and lignin, thus differently resulting in surface morphologies of activated biochars and hydrochars. The crystallinity of cellulose was still maintained in CRMs but not when the CRMs were hydrothermally carbonized. All hydrochars mainly contained aromatic compounds of lignin. The presence of choline chloride in LTTM pretreatment caused activated hydrochar to increase the specific surface area (from 25.4 to 64.0 m²/g) while reducing the total pore volume (from 1.2 to 0.7 m³/g) and pore size (from 184.3 to 34.3 nm). The activated CRM hydrochar had a CO₂ adsorption capacity of over ten times that of the activated biochar (no pretreatment and hydrothermal carbonization were applied). After 20 cycles of regeneration, it maintained >97 % of the initial CO₂ adsorption capacity. This finding pointed out that pretreatment and hydrothermal carbonization can potentially enhance the CO₂ adsorption performance of activated hydrochar from corncob residues.

活性炭是最具成本效益的吸附剂之一，用于低温CO2捕获。与露天焚烧处理玉米芯废渣不同，本研究的重点是通过氯化胆碱和甘油的低温混合物（LTTM）结合水热碳化预处理玉米芯废渣，然后转化为CO2捕集活性炭。与玉米芯原料渣相比，预处理后的富纤维素材料（CRMs）的热稳定性较差，纤维素结晶度和表面官能团相对于纤维素和木质素发生了很大的变化，从而导致活性生物炭和水炭的表面形态不同。纤维素的结晶度仍然保持在CRMs中，但当CRMs被水热碳化时就没有了。所有碳氢化合物主要含有木质素芳香族化合物。在LTTM预处理中加入氯化胆碱后，活化后的活性炭比表面积增加（从25.4 m2/g增加到64.0 m2/g），总孔容减少（从1.2 m3/g减少到0.7 m3/g），孔径减小（从184.3 nm减少到34.3 nm）。在不进行预处理和水热炭化的情况下，活化后的生物质炭对CO2的吸附量是活性生物炭的10倍以上。经过20次循环再生后，其CO2吸附能力仍保持在初始水平的97%。这一发现表明预处理和水热炭化可以潜在地提高玉米芯渣活化碳氢化合物对CO2的吸附性能。

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引用次数: 0

Sustainable green hydrogen from algae: Assessing biological, thermochemical, and bioelectrochemical pathways 从藻类中提取可持续的绿色氢：评估生物、热化学和生物电化学途径

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy

Pub Date : 2025-02-01 DOI: 10.1016/j.biombioe.2024.107512

Soumaya Grira , Hadil Abu Khalifeh , Badr Bedairi , Mohamad Ramadan , Mohammad Alkhedher

Many processes that produce hydrogen from algae also produce CO₂ and other harmful gases as byproducts. Therefore, this type of hydrogen is not classified as green hydrogen, despite being biohydrogen. The aim of this paper is to analyze and compare various biological, thermochemical, and bioelectrochemical processes that produce hydrogen from algae and identify the ones that have the potential to produce carbon neutral hydrogen. Results show that biophotolysis and bioelectrolysis produce the least amounts of CO_2, but they have other limitations. On the other hand, thermochemical processes are more time efficient, yet they consume a lot of energy and produce undesired byproducts. Detailed advantages and disadvantages, hydrogen yields, and mechanisms are discussed in this paper. To produce green hydrogen from green algae, future research should focus on developing biological pathways using genetic engineering, valorizing byproducts from thermochemical processes to enhance energy efficiency, and implementing other recommendations presented in this paper.

许多从藻类中产生氢气的过程也会产生二氧化碳和其他有害气体作为副产品。因此，这种类型的氢虽然是生物氢，但不属于绿色氢。本文的目的是分析和比较从藻类中产生氢的各种生物、热化学和生物电化学过程，并确定有可能产生碳中性氢的过程。结果表明，生物光解和生物电解产生的二氧化碳量最少，但它们有其他局限性。另一方面，热化学过程更省时，但它们消耗大量能量并产生不需要的副产品。本文详细讨论了其优缺点、产氢率和机理。为了从绿藻中生产绿色氢，未来的研究应该集中在利用基因工程开发生物途径，利用热化学过程的副产品来提高能源效率，以及实施本文提出的其他建议。

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引用次数: 0