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Editorial: The role of agave as feedstock within a sustainable circular bioeconomy 社论:龙舌兰在可持续循环生物经济中作为原料的作用
Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2024-01-04 DOI: 10.3389/fceng.2023.1343629
José A Pérez-Pimienta, Hugo O. Méndez-Acosta, Sarah C. Davis, Daniel Kean Yuen Tan
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引用次数: 0
Title: waste to wealth: the power of food-waste anaerobic digestion integrated with lactic acid fermentation 标题:变废为宝:食物垃圾厌氧消化与乳酸发酵相结合的力量
Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2023-12-14 DOI: 10.3389/fceng.2023.1285002
C. Bühlmann, Bede S. Mickan, Stephan Tait, D. Batstone, Parisa A. Bahri
Food waste (FW) costs the global economy $1 trillion annually and is associated with 8% of anthropogenic greenhouse gas emissions. Anaerobic digestion (AD) is an effective technology for recycling organic waste, including FW, for energy and nutrient recovery. Current major revenue streams for AD include the sale of biogas/power, gate fees, and digestate (fertiliser). However, subsidies provided by governments are a major profit driver for commercial facilities and are generally required for profitability, limiting its widespread adoption. Lactic acid (LA) is a high value intermediate of the AD process and literature evidence has indicated the recovery of LA can significantly boost the revenue generated from FW-AD. Moreover, FW fermentation naturally tends towards LA accumulation, promotion of LA producing bacteria, and inhibition of alternate competing microbes, making LA attractive for commercial production from FW. The integration of LA production and recovery into FW-AD could improve its economic performance and reduce the need for subsidy support, providing a platform for global adoption of the AD technology. However, challenges, such as 1) the low LA yield on FW, 2) seasonality of the FW composition, 3) unknown influence of LA recovery on downstream AD, and 4) impact of standard operational procedures for AD on upstream LA production, still exist making this focus area for future research. Even so, literature has shown the benefits of the LA-AD biorefinery, detailing improved process economics, increased FW utilisation, and elimination of subsidy support. Therefore, this review focuses on exploring the integrating LA production into AD by examining the current status of AD, LA integration strategies, challenges associated with LA production from FW, and identifies key challenges and considerations associated with downstream AD of fermented waste.
食物垃圾(FW)每年给全球经济造成 1 万亿美元的损失,并导致 8%的人为温室气体排放。厌氧消化(AD)是回收有机废物(包括厨余垃圾)以回收能源和养分的有效技术。厌氧消化技术目前的主要收入来源包括销售沼气/电力、入场费和沼渣(肥料)。然而,政府提供的补贴是商业设施的主要利润驱动力,通常需要补贴才能盈利,这限制了其广泛采用。乳酸(LA)是厌氧消化(AD)过程中的一种高价值中间产物,文献证据表明,乳酸的回收可显著提高 FW-AD 的收益。此外,FW 发酵自然倾向于 LA 的积累,促进 LA 生产菌的生长,抑制其他竞争微生物,从而使 LA 成为从 FW 中进行商业化生产的诱因。将 LA 的生产和回收纳入 FW-AD 可以提高其经济效益,减少对补贴支持的需求,为全球采用厌氧消化(AD)技术提供平台。然而,仍存在一些挑战,如 1) FW 的 LA 产量低;2) FW 成分的季节性;3) LA 回收对下游厌氧消化(AD)的未知影响;4) 厌氧消化(AD)标准操作程序对上游 LA 生产的影响,这些挑战使得该领域成为未来研究的重点。尽管如此,已有文献显示了厌氧消化(AD)生物精炼厂的益处,详细说明了工艺经济性的改善、FW 利用率的提高以及补贴支持的取消。因此,本综述通过研究厌氧消化(AD)的现状、厌氧消化(AD)的整合策略、与利用 FW 生产 LA 相关的挑战,以及确定与发酵废物下游厌氧消化(AD)相关的关键挑战和注意事项,重点探讨将 LA 生产整合到厌氧消化(AD)中。
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引用次数: 0
Brewers’ spent grain pretreatment optimisation to enhance enzymatic hydrolysis of whole slurry and resuspended pellet 优化啤酒废谷的预处理,以提高整浆和再悬浮颗粒的酶水解效果
Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2023-12-12 DOI: 10.3389/fceng.2023.1272988
J. Castilla-Archilla, M. Cermeño, Maria G. Tuohy, Richard J. FitzGerald, Piet N. L. Lens
A thermal diluted acid pretreatment using brewers spent grain (BSG) was optimised to improve enzymatic hydrolysis while minimising energy and chemical inputs. First, the use of hydrochloric or sulfuric acid for pretreatment was compared, using hydrochloric acid for the next steps. Three different dilute acid thermal pretreatment combinations were optimised in terms of acid concentration, temperature and time using a response surface methodology. Optimization was based on i) highest remaining protein content in the solid fraction (C1: 0.49% HCl; 87.7°C; 92 min), ii) highest liquid recovery (C2: 0.80% HCl; 121.0°C; 142 min), iii) lowest acid concentration applied to achieve largest protein and lowest remaining solid levels (C3: 0.10% HCl; 104.0°C; 70 min); and iv) a final condition based on the lowest water retention capacity when using HCl (C4: 0.20% HCl; 121.0°C; 20 min). The efficiency of enzymatic hydrolysis was evaluated, in the absence and presence of a large concentration of reducing carbohydrates, by centrifuging the slurry after acid pretreatment, recovering the solid fraction and resuspending it in fresh water. In C2, the enzyme (Depol 40L) was added directly to the entire slurry after pretreatment. For C1, C3, and C4 direct addition of enzyme to the whole slurry resulted in a higher release of carbohydrates during hydrolysis. Only in the case of C2 did the use of the resuspended solid result in a higher carbohydrate release. The overall carbohydrate recovery efficiency in the liquid fractions for C1, C2, C3 and C4 corresponded to 399.1 (±26.1), 535.8 (±28.7), 257.0 (±11.5), and 446.3 (±81.1) mg carbohydrate per Gram of BSG (dry weight), respectively. C1 and C4 were considered the optimal pretreatments as these combined a low acid concentration and energy input prior to enzymatic hydrolysis.
对使用酿酒乏谷(BSG)的热稀酸预处理进行了优化,以改善酶水解,同时最大限度地减少能源和化学投入。首先,对使用盐酸还是硫酸进行预处理进行了比较,并在接下来的步骤中使用盐酸。利用响应面方法,从酸浓度、温度和时间方面对三种不同的稀酸热预处理组合进行了优化。优化的依据是:i) 固体部分剩余蛋白质含量最高(C1:0.49% HCl;87.7°C;92 分钟);ii) 液体回收率最高(C2:0.80% HCl;121.0°C;142 分钟);iii) 酸浓度最低,蛋白质含量最高,剩余固体含量最低(C3:0.10% HCl;104.0°C;70 分钟);以及 iv) 使用盐酸时保水能力最低的最终条件(C4:0.20% HCl;121.0°C;20 分钟)。在没有和存在高浓度还原性碳水化合物的情况下,通过离心酸预处理后的浆液,回收固体部分并将其重新悬浮在清水中,来评估酶水解的效率。在 C2 中,酶(Depol 40L)被直接添加到预处理后的整个泥浆中。在 C1、C3 和 C4 中,直接将酶添加到整个泥浆中会在水解过程中释放出更多的碳水化合物。只有在 C2 的情况下,使用重新悬浮的固体才会导致更高的碳水化合物释放量。C1、C2、C3 和 C4 在液体馏分中的总体碳水化合物回收效率分别为每克 BSG(干重)399.1 (±26.1)、535.8 (±28.7)、257.0 (±11.5) 和 446.3 (±81.1) 毫克碳水化合物。C1 和 C4 被认为是最佳预处理方法,因为它们在酶水解前结合了低酸浓度和低能量输入。
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引用次数: 0
Review of the recent advances on the fabrication, modification and application of electrospun TiO2 and ZnO nanofibers for the treatment of organic pollutants in wastewater 电纺 TiO2 和 ZnO 纳米纤维的制造、改性和应用于处理废水中有机污染物的最新进展综述
Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2023-12-04 DOI: 10.3389/fceng.2023.1304128
Sivuyisiwe Mapukata, Katekani Shingange, Teboho M Mokhena
The heightened occurrence of emerging organic pollutants (EOPs) in aquatic bodies has been the subject of global apprehension due to the toxicity they pose to the environment, humans and animals alike. The presence of EOPs has soared due to industrialization and is further exacerbated by human activities like the overuse and poor disposal of dyes, pesticides, pharmaceuticals, surfactants, personal care products and food additives. The complete treatment and removal of EOPs from industrial wastewater and sewage has remained a challenge because of their pseudo-persistence and resistance to degradation. Due to their impressive light absorption properties, high surface-area-to-volume ratio, high porosity, superior mechanical strength, electrospun titanium dioxide (TiO2) and zinc oxide (ZnO) nanofibers have been proposed for the photocatalytic treatment of EOPs. Therefore, this review first highlights the fabrication and modification methods of TiO2 and ZnO nanofibers. A systematic survey of the latest progress in the application of TiO2 and ZnO nanofibers for the degradation of EOPs is then elaborated. Thus, the main goal is to shed light and give insight to researchers on the possibilities surrounding the elimination of EOPs by applying electrospun TiO2 and ZnO semiconductor materials. In addition, the loopholes associated with fabrication and modification processes are discussed with the aim of encouraging innovation for prospective technology advancement and commercialization, as well as to enhance research efforts in wastewater treatment and environmental sustainability.
由于新兴有机污染物(EOPs)对环境、人类和动物的毒性,它们在水生生物中日益增加的发生率一直是全球担忧的主题。由于工业化,EOPs的存在急剧增加,而人类活动,如染料、杀虫剂、药品、表面活性剂、个人护理产品和食品添加剂的过度使用和处理不当,进一步加剧了EOPs的存在。从工业废水和污水中完全处理和去除EOPs仍然是一个挑战,因为它们具有伪持久性和耐降解性。由于二氧化钛(TiO2)和氧化锌(ZnO)纳米纤维具有良好的光吸收性能、高表面积体积比、高孔隙率和优异的机械强度,因此被提出用于EOPs的光催化处理。因此,本文首先综述了TiO2和ZnO纳米纤维的制备和改性方法。系统综述了TiO2和ZnO纳米纤维在降解EOPs方面的最新研究进展。因此,主要目标是通过应用静电纺TiO2和ZnO半导体材料来消除EOPs的可能性,为研究人员提供启发和见解。此外,还讨论了与制造和修改过程相关的漏洞,目的是鼓励创新,以促进未来的技术进步和商业化,并加强在废水处理和环境可持续性方面的研究工作。
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引用次数: 0
Receptors for the recognition and extraction of lithium 识别和提取锂的受体
Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2023-11-30 DOI: 10.3389/fceng.2023.1271045
Jianfeng Zhang, Marco Wenzel, Liangrong Yang, R. Luckay, J. Weigand
We summarize advances in lithium recognition receptors, focusing on their use as active reagents in circular processes such as liquid–liquid extraction, an established industrial process that is advantageous due to its large processing capacity and high selectivity. High-performance systems are required, given the increasing demand for effective separation processes for the recovery of valuable substances from spent lithium-ion batteries or the exploration of brines. Hence, the availability of powerful and highly selective receptors is particularly crucial. This mini-review summarizes the development of active receptors for lithium ion extraction and covers advances in receptors for both lithium ions and lithium salts. It discusses various receptor types, ranging from heteroditopic macrocyclic systems to simple β-diketones. The latter achieve particularly high lithium ion extraction yields in the presence of phosphine oxides such as trioctylphosphine oxide. Structural studies employing 4-phosphorylpyrazolone exhibited diverse coordination modes of lithium and represent clear evidence for the synergistic role of the co-ligand on a molecular level.
我们总结了锂识别受体的研究进展,重点关注其在液液萃取等循环工艺中作为活性试剂的应用,液液萃取是一种成熟的工业工艺,因其处理能力大、选择性高而具有优势。鉴于从废锂离子电池或盐水勘探中回收有价值物质对有效分离工艺的需求日益增长,需要高性能的系统。因此,提供功能强大的高选择性受体尤为重要。本微型综述总结了锂离子萃取活性受体的发展情况,涵盖了锂离子和锂盐受体方面的进展。它讨论了各种受体类型,从异位大环系统到简单的 β-二酮。后者在氧化膦(如三辛基氧化膦)存在的情况下,锂离子萃取率特别高。采用 4-膦酰基吡唑啉酮进行的结构研究显示了锂的多种配位模式,清楚地证明了共配体在分子水平上的协同作用。
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引用次数: 0
A regime map for dry powder coating: the influence of material properties and process parameters 干粉喷涂的制度图:材料特性和工艺参数的影响
Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2023-11-23 DOI: 10.3389/fceng.2023.1301386
Marv J. Khala, Colin Hare, V. Karde, Jerry Y. Y. Heng
A numerical study is carried out to investigate the combined influence of material properties and process parameters on coating quality in a high shear mixer (specifically an FT4 Powder Rheometer) to construct a regime map. The Discrete Element Method (DEM) is employed to simulate a range of material properties (size, density, and surface energy) and process parameters (impeller speed and mixing time) via Design of Experiments (DoE). A robust regime map is proposed for prediction of dry coating performance based on dimensionless Stokes deformation number (Stdef) and granular Bond number (Bo). The regime map provides insight on the optimal range of material properties and process parameters to achieve high coating levels in a high-shear bladed mixer. Furthermore, the minimum energy required to achieve optimal coating performance as well as regions of poor coating quality due to guest detachment exacerbated by excessive energy input can be identified from the regime map, thus reducing wastage of energy and coating material required. The regime map enables the required mixing time for optimal coating to be determined so long as particle size distributions and surface energies are known.
本研究采用数值方法研究了高剪切混合器(特别是 FT4 粉末流变仪)中材料特性和工艺参数对涂层质量的综合影响,并绘制出了一个体系图。采用离散元素法 (DEM) 通过实验设计 (DoE) 模拟一系列材料属性(尺寸、密度和表面能)和工艺参数(叶轮速度和混合时间)。根据无量纲斯托克斯变形数(Stdef)和颗粒邦德数(Bo),提出了预测干涂层性能的稳健机制图。该体系图提供了在高剪切叶片混合器中实现高涂层水平的最佳材料特性和工艺参数范围。此外,还可以从体系图中识别出实现最佳涂层性能所需的最小能量,以及因能量输入过多而加剧的客体脱离所导致的涂层质量不佳区域,从而减少能量和所需涂层材料的浪费。只要知道粒度分布和表面能量,就能通过体系图确定最佳涂层所需的混合时间。
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引用次数: 0
Hybrid modeling of drop breakage in pulsed sieve tray extraction columns 脉冲筛板萃取塔中液滴破碎的混合建模
Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2023-11-08 DOI: 10.3389/fceng.2023.1274349
Andreas Palmtag, Johannes Rousselli, Henning Gröschl, Andreas Jupke
Accurate models for pulsed sieve tray extraction columns (PSEs) depend on the correct prediction of the drop diameter to estimate extractive mass transfer across the phase boundary. Phenomenologically, the drop diameter is determined by a balance of drop breakage and coalescence. While for most industrial solvent systems, coalescence plays a minor role; breakage is mostly the dominant phenomenon determining the drop diameter. However, most modeling approaches for drop breakage in PSEs are characterized by a trade-off between a broad validity range and good prediction accuracy. To overcome this limitation, we developed a hybrid breakage model for drop breakage in PSEs in which a physical-empirical model basis is enhanced by data-driven parameter estimator models (PEMs). The hybrid model is based on a revised form of Garthe’s breakage model, for which we developed a linear PEM for the model parameters and two data-driven PEMs for dstab and d100 , respectively. The hybrid breakage model was validated on 743 experimental data sets and evaluated based on the pull metric. In a sensitivity analysis, the model correctly predicted the breakage probability over a wide range of solvent properties, operating conditions, and sieve tray geometries. In future studies, the hybrid breakage model can be incorporated into extraction column models without an initial parametrization.
准确的脉冲筛板萃取柱(pse)模型依赖于正确的液滴直径预测,以估计萃取物在相边界上的传质。在现象学上,液滴直径是由液滴破碎和凝聚的平衡决定的。而对于大多数工业溶剂体系,聚结作用较小;断裂是决定液滴直径的主要现象。然而,大多数的预测方法的特点是在较宽的有效范围和较好的预测精度之间进行权衡。为了克服这一限制,我们开发了一种混合破碎模型,其中物理经验模型基础通过数据驱动参数估计模型(PEMs)得到增强。混合模型是基于Garthe破损模型的修正形式,为此我们为模型参数开发了一个线性PEM,并分别为dstab和d100开发了两个数据驱动的PEM。在743个试验数据集上验证了混合断裂模型,并基于拉力度量对模型进行了评价。在灵敏度分析中,该模型正确地预测了各种溶剂性质、操作条件和筛板几何形状的破碎概率。在未来的研究中,混合破碎模型可以在不初始参数化的情况下纳入提取柱模型。
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引用次数: 0
Molecular epidemiology of sisal bole rot disease suggests a potential phytosanitary crisis in Brazilian production areas 剑麻孔腐病的分子流行病学提示巴西产区存在潜在的植物检疫危机
Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2023-11-01 DOI: 10.3389/fceng.2023.1174689
Fábio Trigo Raya, Gabriel Quintanilha-Peixoto, Adriele Barbara de Oliveira, Marina Püpke Marone, Wagner José Villela dos Reis, João Gabriel Oliveira Marques, Rafael Leonardo Almeida, Cezar Augusto Teixeira Falcão Filho, Oldair Del’Arco Vinhas Costa, Rafael Vasconcelos Ribeiro, Ana Cristina Fermino Soares, Aristóteles Goés-Neto, Gonçalo Amarante Guimarães Pereira
Sisal bole rot disease is the major phytosanitary problem of Agave plantations in Brazil. The disease is caused by a cryptic species of Aspergillus : A. welwitschiae . To date, the only way to diagnose the disease was to observe external symptoms, visible only when the plant is already compromised, or through the isolation and sequencing of the pathogen, which requires cutting the entire plant for bole tissue sampling. We developed a new primer set based on a unique gene region of A. welwitschiae , which can detect the phytopathogenic strains through PCR directly from sisal leaves. Using the new marker to study the main sisal-producing areas in Brazil, we discovered a troublesome situation. The main producing areas of this crop had a pathogen incidence of 78%–88%. The dispersion index indicates a regular spatial pattern for disease distribution, suggesting that the use of contaminated suckers to establish new fields may be the main disease-spreading mechanism. Altogether, the high incidence of the pathogen, the unavailability of clean plants, the unpredictability of disease progression, and the low investment capacity of farmers reveal the vulnerability of this sector to a potential phytosanitary crisis. By correlating the disease symptomatology with soil nutritional traits, we suggest that higher potassium availability might decrease visual symptoms, while phosphorus may have the opposite effect. Also, we observe a potential cultivar effect, suggesting that common sisal may be more susceptible than hybrid cultivars (especially H400). This new molecular tool is a significant advance for understanding the disease, enabling the implementation of a monitoring program and studies that may lead to pathogen control strategies and changes in the Brazilian production model.
剑麻孔腐病是巴西龙舌兰种植的主要植物卫生问题。这种疾病是由一种隐蔽的曲霉引起的:a . welwitschiae。迄今为止,诊断该疾病的唯一方法是观察外部症状,只有在植物已经受损时才能看到,或者通过分离和测序病原体,这需要切割整个植物进行孔组织取样。基于剑麻独特的基因区域构建了一套新的引物,可以直接从剑麻叶片中检测出植物病原菌株。利用新标记对巴西主要剑麻产区进行研究,我们发现了一个棘手的情况。该作物主产区病原菌发病率为78% ~ 88%。分散指数显示病害分布具有一定的空间规律,表明利用被污染的吸盘开辟新田可能是病害传播的主要机制。总之,病原体的高发病率、无法获得清洁植物、疾病进展的不可预测性以及农民的低投资能力表明,该部门易受潜在植物检疫危机的影响。通过将疾病症状与土壤营养性状相关联,我们认为较高的钾效度可能会减少视觉症状,而磷效度可能相反。此外,我们观察到潜在的品种效应,表明普通剑麻可能比杂交品种(特别是H400)更敏感。这种新的分子工具是了解该病的重大进展,使监测计划和研究得以实施,可能导致病原体控制策略和巴西生产模式的变化。
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引用次数: 0
Editorial: Smart manufacturing: advances and applications of artificial intelligence, machine learning and industrial internet of things in the chemical and biochemical industry 编辑:智能制造:人工智能、机器学习和工业物联网在化学和生物化学工业中的进展和应用
Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2023-10-31 DOI: 10.3389/fceng.2023.1309165
J. Flores-Cerrillo, Q. He, Jin Wang, Huimin Yu
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引用次数: 0
Leveraging mechanobiology and biophysical cues in lung organoids for studying lung development and disease 利用肺类器官的机械生物学和生物物理线索研究肺部发育和疾病
Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2023-10-24 DOI: 10.3389/fceng.2023.1255783
Ziming Shao, Paolo De Coppi, Federica Michielin
Lung organoids have emerged as powerful tools for studying lung distal diseases by recapitulating the cellular diversity and microenvironment of the lung tissue. This review article highlights the advancements in leveraging mechanobiology and biophysical cues in lung organoid engineering to improve their physiological relevance and disease modelling capabilities. We discuss the role of mechanobiology in lung development and homeostasis, as well as the integration of biophysical cues in the design and culture of lung organoids. Furthermore, we explore how these advancements have contributed to the understanding of lung distal diseases pathogenesis. We also discuss the challenges and future directions in harnessing mechanobiology and biophysical cues in lung organoid research. This review showcases the potential of lung organoids as a platform to investigate the underappreciated impacts of biophysical and biomechanical properties in enhancing lung organoids complexity and functionality, and ultimately provide new insight into embryonic lung development and pulmonary distal diseases pathogenesis.
肺类器官通过再现肺组织的细胞多样性和微环境,已成为研究肺远端疾病的有力工具。这篇综述文章强调了在肺类器官工程中利用机械生物学和生物物理线索来提高其生理相关性和疾病建模能力的进展。我们讨论了机械生物学在肺发育和体内平衡中的作用,以及在肺类器官的设计和培养中整合生物物理线索。此外,我们探讨了这些进展如何有助于了解肺远端疾病的发病机制。我们还讨论了在肺类器官研究中利用机械生物学和生物物理线索的挑战和未来方向。本综述展示了肺类器官作为研究生物物理和生物力学特性在增强肺类器官复杂性和功能方面未被充分认识的影响的平台的潜力,并最终为胚胎肺发育和肺远端疾病发病机制提供新的见解。
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引用次数: 0
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