Bioresource Technology Reports最新文献_第10页

Exploring thermophilic bacteria as a potential source for the development of new antimicrobial agents 探索嗜热细菌作为开发新型抗菌剂的潜在来源

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2025-12-21 DOI: 10.1016/j.biteb.2025.102496

Ikrimah A. Alhanbali , Latifat Abdulsalam , Sa-ad Abubakari , Fatima R. Garba , Amjad B. Khalil , Tawfik A. Saleh

Antimicrobial resistance (AMR) is a global health challenge, with an estimated 10 million deaths annually by 2050 if left unabated. Identifying new sources for developing effective drugs against pathogenic microbes, including drug-resistant infections, is crucial. Natural products, especially from extreme habitats with rich biodiversity, are considerably more effective than synthetic compounds. Thermophiles in deserts, volcanic regions, hot springs, and hydrothermal vents produce novel and vital bioactive compounds (BACs), such as antimicrobial agents (AMAs) and antimicrobial peptides (AMPs). Due to their extreme environments, thermophilic bacteria exhibit unique features in their morphology, physiology, biochemistry, and molecular mechanisms, leading to exceptional chemical structures and biological activities applicable in different biotechnological applications. This review therefore aims to provide an overview of thermophilic bacteria from various global regions and their physiological and adaptive features in extremely hot environments. Also, it summarizes their production of AMAs and AMPs, focusing on key bacterial genera that produce AMAs, such as Actinomycetes, Bacillus, and Geobacillus, and also highlighting the classification and mechanisms of thermostable AMPs. In addition, it includes examples from Saudi Arabia to illustrate regional research progress and potential. Furthermore, the review discusses current limitations and future perspectives regarding the biotechnological applications of thermophilic bacteria. The remarkable efficacy of thermophilic-derived BACs offers promising opportunities for innovation and development in medicine, agriculture, and food applications.

抗菌素耐药性（AMR）是一项全球卫生挑战，如果不加以遏制，到2050年估计每年将有1000万人死亡。确定新的来源以开发对抗病原微生物（包括耐药感染）的有效药物至关重要。天然产物，特别是来自具有丰富生物多样性的极端生境的天然产物，比合成化合物有效得多。沙漠、火山地区、温泉和热液喷口中的嗜热菌产生新的和重要的生物活性化合物（BACs），如抗菌剂（AMAs）和抗菌肽（amp）。由于极端的生存环境，嗜热细菌在形态、生理、生物化学和分子机制方面表现出独特的特征，从而导致了独特的化学结构和生物活性，适用于不同的生物技术应用。因此，本文综述了来自全球不同地区的嗜热细菌及其在极热环境中的生理和适应特征。同时，对AMAs和AMPs的产生进行了综述，重点介绍了产生AMAs的关键细菌属，如放线菌、芽孢杆菌和地杆菌，并重点介绍了耐热AMPs的分类和作用机制。此外，它还包括来自沙特阿拉伯的例子，以说明区域研究进展和潜力。此外，本文还讨论了嗜热细菌生物技术应用的局限性和未来前景。嗜热性衍生BACs的显著功效为医学、农业和食品应用的创新和发展提供了有希望的机会。

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引用次数: 0

From lab to industry: Methods for biomass quantification in basidiomycetous fungi 从实验室到工业：担子菌真菌生物量定量的方法

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2025-12-19 DOI: 10.1016/j.biteb.2025.102459

Saikrishnan Kandaswamy , Pia Bergmann , Katrin Ochsenreither , Lukas Neutsch , Martin Gand , Christoph Lindenberger

Basidiomycota are vital producers of high-value bioactive compounds, enzymes, and natural pigments, making accurate biomass quantification essential for optimizing bioprocesses. This review critically assesses methodologies for measuring biomass concentration in Basidiomycota, including metabolic assays, quantitative real-time polymerase chain reaction assay (qPCR), ergosterol assays, chitin determination, dissolved oxygen sensors, off-gas analysis, dielectric spectroscopy, flow cytometry, advanced imaging and microscopy, and vibrational spectroscopy. Each technique is systematically evaluated for its scale of application, accuracy, operational mode, and cost-effectiveness, with emphasis on their respective advantages and limitations. By comparing these factors, this review provides guidance in selecting optimal biomass quantification methods to improve efficiency and reliability across laboratory and industrial settings.

担子菌是高价值生物活性化合物、酶和天然色素的重要生产者，使准确的生物量量化对优化生物过程至关重要。本文综述了各种测量担子菌生物量浓度的方法，包括代谢测定、定量实时聚合酶链反应测定（qPCR）、麦角甾醇测定、几丁质测定、溶解氧传感器、废气分析、介电光谱、流式细胞术、高级成像和显微镜以及振动光谱。对每种技术的应用规模、准确性、操作模式和成本效益进行了系统评估，重点介绍了各自的优势和局限性。通过比较这些因素，本文综述为选择最佳生物量量化方法提供了指导，以提高实验室和工业环境的效率和可靠性。

引用次数: 0

Glycerol-FeCl₃ pretreatment stabilizes cellulose and enables selective saccharification of sugarcane bagasse 甘油- fecl₃预处理能稳定纤维素，使甘蔗渣选择性糖化

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2025-12-19 DOI: 10.1016/j.biteb.2025.102495

Chong Zhang , Feixiang Xu , Yingchuan Zhang , Kang Hong , Mingfu Li , Guirong Bao , Liqun Jiang

Organosolv pretreatment of biomass is a promising strategy for subsequent selective saccharification. This study demonstrates that Glycerol-FeCl₃ pretreated bagasse produces a levoglucosan yield of 33.0 wt% in fast pyrolysis, remarkably higher than 4.1 wt% from the untreated sample. In enzymatic hydrolysis, the pretreated bagasse affords 84.4 wt% glucose, compared to 8.6 wt% for the untreated biomass. Quantum chemical calculations show that Fe³⁺ forms strong coordination bonds with the glycosidic oxygen (binding energy: −40.6 kJ/mol), stabilizing the cellulose structure, whereas its interaction with axyl groups is much weaker (−5.7 kJ/mol). This weak interaction is attributed to the confinement effect imposed by the branched side chains of hemicellulose, which destabilizes and disrupts the hemicellulose structure. Together, these findings show that Glycerol-FeCl₃ pretreatment not only alters biomass composition but also reshapes molecular-level interactions, promoting cellulose preservation while facilitating hemicellulose and lignin removal. This dual function increases levoglucosan yields during fast pyrolysis and enhances enzymatic accessibility for glucose production.

有机溶剂预处理生物质是一种很有前途的后续选择性糖化策略。该研究表明，甘油- fecl3预处理的甘蔗渣在快速热解中产生的左旋葡聚糖收率为33.0%，显著高于未处理样品的4.1 %。在酶解中，预处理的甘蔗渣提供84.4 wt%的葡萄糖，而未经处理的生物质提供8.6 wt%的葡萄糖。量子化学计算表明，Fe3+与糖苷氧形成强配位键（结合能：−40.6 kJ/mol），稳定了纤维素结构，而与轴基的相互作用弱得多（−5.7 kJ/mol）。这种弱相互作用是由于半纤维素的支链侧链所施加的约束效应，使半纤维素结构不稳定和破坏。总之，这些发现表明甘油- fecl₃预处理不仅改变了生物质组成，而且重塑了分子水平的相互作用，促进了纤维素的保存，同时促进了半纤维素和木质素的去除。这种双重功能增加了快速热解过程中左旋葡聚糖的产量，并提高了酶对葡萄糖生产的可及性。

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引用次数: 0

Structural diversity of ionic liquids determines acute and chronic toxicity in Pseudokirchneriella subcapitata 离子液体的结构多样性决定了亚capitata Pseudokirchneriella的急慢性毒性

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2025-12-19 DOI: 10.1016/j.biteb.2025.102481

Martina Ciardi , Cintia Gómez-Serrano , Ana Sánchez-Zurano , Victor Manuel Ortiz-Martínez , María José Salar-García , F. Gabriel Acién , Francisco José Hernández-Fernández , Antonia Pérez de los Ríos

Ionic liquids (ILs) have attracted increasing attention as versatile “green solvents” in industrial applications, yet their environmental risks remain insufficiently understood. This study evaluates the acute and chronic toxicity of 21 ILs with varying cationic and anionic structures on 21 ILs on the freshwater microalga Pseudokirchneriella subcapitata. These ILs were selected based on their structural diversity and potential use in membrane-based applications.

A key novelty of this work lies in the application of Pulse Amplitude Modulated (PAM) chlorophyll fluorescence, a rapid and non-invasive tool that revealed early photosynthetic impairment long before visible growth inhibition occurred. Acute toxicity was assessed through chlorophyll fluorescence parameters, revealing concentration-dependent declines in photosynthetic performance. ILs containing pyrrolidinium, ammonium, and phosphonium cations showed consistently lower toxicity compared to imidazolium-based ILs.

Chronic exposure further identified three ILs, [Chol][H₂PO₄], [P_8,8,8,8][Br], and [P_6,6,6,14][DBS] as environmentally compatible up to 0.7 g·L⁻¹. Notably, [Chol][H₂PO₄] combined low toxicity with potential growth-promoting effects, likely due to its biocompatible choline cation and phosphate anion. In contrast, phosphonium ILs with long alkyl chains showed reduced bioavailability, which may explain their limited impact on microalgal physiology.

By integrating acute and chronic EC₅₀ values with structural considerations, this work advances the understanding of how IL structure influences microalgal toxicity and offers a basis for the design of safer ILs. The combined use of short- and long-term assays strengthens the environmental risk assessment of ILs in aquatic systems.

离子液体作为多用途的“绿色溶剂”在工业应用中受到越来越多的关注，但其环境风险仍未得到充分认识。本研究评价了21种不同阳离子和阴离子结构的il对淡水微藻Pseudokirchneriella subcapitata的急性和慢性毒性。这些il的选择是基于它们的结构多样性和在膜基应用中的潜在用途。这项工作的一个关键新颖之处在于脉冲振幅调制（PAM）叶绿素荧光的应用，这是一种快速且非侵入性的工具，可以在可见的生长抑制发生之前很久就发现早期光合作用损伤。通过叶绿素荧光参数评估急性毒性，揭示了光合性能的浓度依赖性下降。与咪唑基il相比，含有吡咯烷鎓、铵离子和磷离子的il的毒性始终较低。慢性暴露进一步鉴定了三种化学物质，[Chol][H2PO4], [P8,8,8,8][Br]和[P6,6,6,14][DBS]对环境的相容性最高可达0.7 g·L−1。值得注意的是，[Chol][H2PO4]结合了低毒性和潜在的生长促进作用，可能是由于其生物相容性胆碱阳离子和磷酸阴离子。相比之下，具有长烷基链的磷il的生物利用度降低，这可能解释了它们对微藻生理的影响有限。通过将急性和慢性EC50值与结构考虑相结合，本工作促进了对IL结构如何影响微藻毒性的理解，并为设计更安全的IL提供了基础。短期和长期分析的联合使用加强了水生系统中il的环境风险评估。

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引用次数: 0

Adaptive laboratory evolution of Klebsiella oxytoca: Enhanced 2,3-butanediol synthesis from glycerol fermentation 克雷伯氏菌的实验室适应性进化：从甘油发酵中增强2,3-丁二醇合成

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2025-12-19 DOI: 10.1016/j.biteb.2025.102477

Dimitris Karayannis , Nefeli Vasiliki Limnaiou , Emmanuel Rondags , Isabelle Chevalot , Seraphim Papanikolaou

The development of highly efficient bioprocesses is of great interest in the bioeconomy era. In this study, the metabolic phenomena implicated in the biosynthesis of 2,3-butanediol (BDO), a high-value platform chemical, were thoroughly investigated and discussed during the adaptive laboratory evolution (ALE) of Klebsiella oxytoca ACA-DC 1581. Preliminary tests of tolerance to glycerol and BDO demonstrated that the decrease in glycerol consumption rate was initiated at a BDO concentration of c. 50 g/L, the latter also being associated with the conversion of BDO to acetoin. In the initial stage of cultures, the ratio of meso-BDO to L-BDO was c. 2.5, and then molecular equilibrium was reached when meso-BDO was converted back to acetoin. This reaction was mainly favored by residual glycerol concentrations of 12 to 15 g/L. During ALE, the gradually increasing selective pressure, namely the initial BDO concentration (BDO0), was associated with biofilm formation, when the surviving population was previously exposed to BDO threshold-level concentration. Under equivalent levels of stress, cell elongation was triggered, following cell division inhibition, this is the first study of the filamentation phenomenon in the K. oxytoca species to be ever reported. After 116 generations of ALE, the established threshold of c. 67 g/L of BDO production was surpassed by 35 %. The final BDO concentration of 90.4 g/L obtained by the BDO tolerated population is one of the highest ever documented. Finally, a successful execution of a semi-pilot scale bioreactor culture has been demonstrated. This study unveils novel underlying metabolic phenomena and demonstrates the potential of ALE as a promising strategy in the design of highly efficient BDO biosynthesis.

在生物经济时代，开发高效的生物工艺是人们非常感兴趣的问题。在这项研究中，深入研究和讨论了克雷伯菌ACA-DC 1581在适应性实验室进化（ALE）过程中涉及的高价值平台化学品2,3-丁二醇（BDO）生物合成的代谢现象。对甘油和BDO耐受性的初步试验表明，当BDO浓度为c. 50 g/L时，甘油消耗率开始下降，后者也与BDO转化为乙酰化酶有关。在培养初期，中位bdo与L-BDO的比值为c. 2.5，当中位bdo转化为乙酰酪蛋白时达到分子平衡。残留甘油浓度为12 ~ 15g /L时，有利于反应的进行。在ALE过程中，当存活种群先前暴露于BDO阈值水平浓度时，逐渐增加的选择压力即初始BDO浓度（BDO0）与生物膜的形成有关。在同等水平的胁迫下，细胞分裂抑制后，细胞伸长被触发，这是迄今为止报道的第一个关于K. oxytoca物种的丝化现象的研究。经过116代ALE， BDO产量超过了设定的阈值c. 67 g/L，超过了35%。BDO耐受人群获得的最终BDO浓度为90.4 g/L，是有史以来最高的记录之一。最后，一个成功的执行半中试规模的生物反应器培养已被证明。这项研究揭示了新的潜在代谢现象，并证明了ALE作为高效BDO生物合成设计的一种有前途的策略的潜力。

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引用次数: 0

Enhanced bacterial nano-cellulose production by Acetobacter xylinum using cost-effective sweet black tea medium added with ethanol 利用添加了乙醇的低成本甜红茶培养基，提高了木醋杆菌的细菌纳米纤维素产量

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2025-12-19 DOI: 10.1016/j.biteb.2025.102482

Pannita Jaroenjaturong, Benjamas Cheirsilp, Uschara Thumarat, Piyarat Boonsawang

Bacterial cellulose (BC) is an environmentally friendly and versatile biomaterial with applications in various fields such as biomedicine, packaging, and environmental engineering. This study focused on optimizing BC production by Acetobacter xylinum cultured in a cost-effective sweet black tea (ST) medium. After optimizing medium components, culture conditions and inoculum size, A. xylinum produced high BC in ST medium supplemented with ethanol and ammonium sulfate using an inoculum size of 7 log CFU/mL under static culture condition, while it produced high total acid under shaking culture condition. The concentrations of medium components were optimized through Response Surface Methodology (RSM). Under the optimal conditions (sucrose 12 %w/v, ethanol 1 %v/v, ammonium sulfate 0.4 %w/v, and black tea 1 %w/v), the maximum BC yield of 6.49 g/L was achieved within 7 days. Intensive analytical techniques, including FT-IR, TGA, XRD, and SEM, confirmed the high purity, nanofibrillar structure, and thermal stability of the BC produced. This study not only improved BC yield and reduced cultivation time but also relied on inexpensive, food-grade substrates, offering both economic and technical advantages for sustainable BC production.

细菌纤维素是一种环境友好、用途广泛的生物材料，在生物医药、包装、环境工程等领域有着广泛的应用。本研究的重点是优化木醋杆菌在低成本的甜红茶（ST）培养基中培养BC的产量。通过对培养基成分、培养条件和接种量的优化，木曲菌在ST培养基中添加乙醇和硫酸铵，接种量为7 log CFU/mL时，在静态培养条件下能产生较高的BC，在振荡培养条件下能产生较高的总酸。采用响应面法（RSM）优化培养基中各成分的浓度。在最佳条件（蔗糖12% w/v，乙醇1% v/v，硫酸铵0.4% w/v，红茶1% w/v）下，7 d内BC产量达到6.49 g/L。包括FT-IR、TGA、XRD和SEM在内的大量分析技术证实了BC的高纯度、纳米纤维结构和热稳定性。该研究不仅提高了BC产量，缩短了栽培时间，而且依靠廉价的食品级基质，为可持续的BC生产提供了经济和技术优势。

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引用次数: 0

Earthworms as an alternative protein source for human consumption: Nutritional value, sustainability, processing, and safety considerations—A systematic review 蚯蚓作为人类食用的替代蛋白质来源：营养价值，可持续性，加工和安全考虑-系统综述

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2025-12-18 DOI: 10.1016/j.biteb.2025.102494

Liciane Oliveira da Rosa , Samuel Machado Abreu , Álvaro Renato Guerra Dias

Earthworms stand out as a sustainable protein alternative amid growing environmental pressures and population increases. This 25-year systematic review of 43 studies reveals a post-2015 surge in research, mainly from Europe, South America, and Asia. The most studied species, Eisenia fetida, Eudrilus eugeniae, and Eisenia andrei, are valued for nutritional quality and ease of cultivation. Earthworms provide 50–70 % crude protein (dry basis), key amino acids, unsaturated fats, minerals, and vitamins, and can be processed into flour for foods like bread or supplements. Their efficient, low-cost rearing reduces water use, land use, and emissions, contributing to the circular economy by recycling organic waste. While human consumption is traditional in parts of Asia, Africa, and South America, cultural and regulatory challenges elsewhere require communication and technological innovations. Standardizing management, ensuring safety, and addressing consumer acceptance are significant challenges, with research gaps in digestibility and nutrient bioavailability. In summary, earthworms are a significant, sustainable, and nutritious protein source with high potential to support resilient food systems when backed by integrated safety, quality, and acceptance strategies.

在日益增长的环境压力和人口增长的背景下，蚯蚓作为一种可持续的蛋白质替代品脱颖而出。这项对43项研究进行了25年系统回顾的研究显示，2015年后研究激增，主要来自欧洲、南美和亚洲。研究最多的种属有飞天爱森尼亚（Eisenia fetida）、eugenae Eudrilus eugenae和andrei爱森尼亚（Eisenia andrei），因其营养品质和易栽培而受到重视。蚯蚓提供50 - 70%的粗蛋白质（干基）、关键氨基酸、不饱和脂肪、矿物质和维生素，并可加工成面粉，用于面包或补充剂等食品。它们的高效、低成本饲养减少了水的使用、土地的使用和排放，通过循环利用有机废物促进了循环经济。虽然人类消费在亚洲、非洲和南美洲部分地区是传统的，但在其他地方，文化和监管挑战需要通信和技术创新。标准化管理、确保安全性和解决消费者接受度是重大挑战，在消化率和营养物质生物利用度方面存在研究空白。总而言之，蚯蚓是一种重要的、可持续的、营养丰富的蛋白质来源，在综合安全、质量和验收策略的支持下，具有很高的潜力，可以支持有弹性的粮食系统。

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引用次数: 0

Bioenergy potential of pampa grass waste: Combustion properties and economic-environmental considerations 潘帕草原废弃物的生物能源潜力：燃烧特性和经济环境考虑

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2025-12-18 DOI: 10.1016/j.biteb.2025.102483

S. Pérez , J. Fernandez-Ferreras , I. Fernandez

The EU is addressing the invasive Cortaderia selloana (CS) due to its high management costs and large waste generation. This study evaluates CS waste as a feedstock for bioenergy production through direct combustion. Thermochemical parameters, including heating values, moisture and ash content, bulk density, adiabatic flame temperature (AFT), and fuel value index, were analyzed to assess combustion performance. Biomass yield, energy output, and the economic and environmental feasibility of CS combustion were also evaluated. Results show that optimal combustion requires a moisture content below 31.70 %. The average dry biomass yield was 10.21 ± 1.22 Mg ha⁻¹ yr⁻¹, equivalent to 166 GJ ha⁻¹ yr⁻¹. The process becomes economically viable when electricity prices exceed 107 € MWh⁻¹. Emission analysis revealed low CO, CO₂, and SO₂ levels but elevated NOₓ emissions. Overall, CS waste represents a sustainable bioenergy resource and an environmentally friendly strategy for non-chemical control of this invasive species.

由于高管理成本和大量废物产生，欧盟正在解决入侵的棉花Cortaderia （CS）。本研究评估了CS废弃物作为直接燃烧生产生物能源的原料。分析热化学参数，包括热值、水分和灰分含量、体积密度、绝热火焰温度（AFT）和燃料值指数，以评估燃烧性能。并对生物质产量、能量输出以及CS燃烧的经济和环境可行性进行了评价。结果表明，最佳燃烧条件为含水率低于31.70%。平均干生物量产量为10.21±1.22 Mg ha−1 yr−1，相当于166 GJ ha−1 yr−1。当电价超过107€MWh - 1时，该过程在经济上是可行的。排放分析显示，CO、CO₂和SO₂水平较低，但NOₓ排放量较高。总之，CS废弃物代表了一种可持续的生物能源资源和一种非化学控制入侵物种的环境友好策略。

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引用次数: 0

A critical review in evaluating the feasibility of nitrous oxide recovery from tannery effluent treatment plants for potential enhanced energy generation 评价从制革厂废水处理厂回收氧化亚氮用于潜在增强能源生产的可行性的关键审查

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2025-12-17 DOI: 10.1016/j.biteb.2025.102488

Roumi Bhattacharya , Sri Bala Kameswari Kanchinadham

Biological wastewater treatment systems unintentionally emit nitrous oxide (N₂O), a greenhouse gas (GHG) with a global warming potential of 273 times that of carbon dioxide (CO₂). The emissions from plants treating high-strength wastewater, such as tannery effluents, are more intense compared to municipal wastewater treatment units. Operational challenges and complexity of design parameters limit the functionality of N₂O emission abatement measures from the nitrogen removal systems. From the resource recovery perspective, N₂O presents a promising characteristic as an energy carrier and an oxidant for co-combustion with methane (CH₄) which enhances bioenergy production than that using oxygen for CH₄ combustion. The present review evaluates the feasibility of using N₂O from tannery effluent treatment plants (TETP) coupled with CH₄ generated from anaerobic digesters for higher energy recovery. Till date, the area of potential higher energy generation along with control of GHG emission from TETP is not yet explored. This critical summary presented in this article discusses the hypothesis of the process introduced by lab-scale studies related to reuse of N₂O, highlighting the state-of-art research in this sector and the challenges and concerns that can be faced in the process of N₂O recovery from tannery wastewater and its use as a fuel additive.

生物废水处理系统无意中排放一氧化二氮（N2O），这是一种温室气体（GHG），其全球变暖潜能值是二氧化碳（CO2）的273倍。与城市污水处理单位相比，处理高强度废水（如制革厂废水）的工厂排放的排放物更为强烈。操作挑战和设计参数的复杂性限制了脱氮系统减少N2O排放措施的功能。从资源回收的角度来看，N2O作为一种能量载体和氧化剂与甲烷（CH4）共燃烧的特性比使用氧气燃烧CH4更能提高生物能源的产量。本文评价了利用制革废水处理厂（TETP）产生的N2O与厌氧消化池产生的CH4相结合以提高能量回收率的可行性。迄今为止，潜在的高能量发电领域以及控制TETP的温室气体排放尚未得到探索。本文提出的关键总结讨论了实验室规模研究中与N2O再利用相关的过程假设，强调了该领域的最新研究，以及从制革厂废水中回收N2O并将其用作燃料添加剂的过程中可能面临的挑战和问题。

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引用次数: 0

Effectiveness of bio-additive in goatskin preservation and tannery wastewater treatment 生物添加剂在山羊皮保鲜及制革废水处理中的效果

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2025-12-17 DOI: 10.1016/j.biteb.2025.102493

Md. Sanaul Haque , Md. Abul Hashem , Md. Enamul Hasan Zahin , Md. Mukimujjaman Miem

Typical soaking in leather manufacturing discharges salt from preserved raw stock, which increases Total Dissolved Solids (TDS) and chloride (Cl⁻) levels in tannery wastewater. In this study, bio-additive (bagasse powder) was merged with lower common salt to preserve raw goatskin and monitored for 45 days. Moisture percentage, shrinkage temperature, viable bacteria count, total leachable nitrogen, and collagen content were examined on the 0th, 1st, 3rd, 6th, 10th, 14th, 20th, 25th, 30th, 35th, 40th, and 45th days. GC–MS and FTIR analysis revealed the presence of antibacterial, antifungal, and antioxidant agents. The antimicrobial effect of bagasse revealed its effectiveness as a curing agent. In soaking wastewater, TDS and Cl⁻, Fe, and Ni content were significantly reduced by 93.91 %, 98.07 %, 64.9 %, and 52.55 %, respectively. The physicomechanical properties of preserved leather met standard requirements. SEM images depict a similar cross-sectional orientation. Hence, a bio-additive, lower-salt curing agent can be more environmentally friendly compared to salt-based preservation.

皮革制造中典型的浸泡会从保存的原料中排放盐，这会增加制革厂废水中的总溶解固体（TDS）和氯化物（Cl−）水平。本研究将生物添加剂（甘蔗渣粉）与低盐混合保存山羊皮，并进行了45天的监测。在第0天、第1天、第3天、第6天、第10天、第14天、第20天、第25天、第30天、第35天、第40天、第45天检测含水率、收缩温度、活菌数、可浸出总氮和胶原蛋白含量。GC-MS和FTIR分析显示含有抗菌、抗真菌和抗氧化剂。甘蔗渣的抗菌作用显示了它作为固化剂的有效性。在浸泡废水中，TDS和Cl−、Fe、Ni含量分别显著降低93.91%、98.07%、64.9%和52.55%。保存皮革的物理力学性能符合标准要求。扫描电镜图像描绘了类似的横截面方向。因此，与盐基保存相比，生物添加剂、低盐固化剂可以更环保。

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引用次数: 0