Bioresource Technology Reports最新文献_第8页

Evaluating sustainable agricultural waste biomass for methylene blue adsorption in wastewater treatment: A state-of-the-art review 评估可持续农业废弃物生物质在废水处理中对亚甲蓝的吸附作用：最新技术综述

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2024-10-26 DOI: 10.1016/j.biteb.2024.101983

Margy Chahal, Sheetal Kumari, Amrik Bhattacharya, Manoj Chandra Garg

The presence of Methylene blue (MB) dye in aquatic environments is a significant concern due to its extensive industrial usage, particularly in the textile industry. This article discusses different methods for removing pollutants from wastewater, specifically focusing on adsorption techniques that utilize agricultural waste as eco-friendly adsorbents. It provides a comprehensive review of the activation chemicals, methods, and various characterization techniques such as FTIR, BET, SEM-EDX, and bio-sorbent materials. In our study, we have employed various models such as the isotherm model, kinetic model, and thermodynamic parameters to analyze the data. The study emphasizes the importance of conducting further research to enhance treatment methods and minimize the negative impacts of MB contamination. It also identifies areas where the current understanding is lacking. This review contributes to the development of cost-effective and feasible technology for addressing the global issue of artificial dye pollution in aquatic environments, thereby promoting environmentally friendly wastewater treatment methods.

由于亚甲基蓝（MB）染料在工业上的广泛使用，特别是在纺织业中的使用，水生环境中存在的亚甲基蓝（MB）染料已成为一个重大问题。本文讨论了从废水中去除污染物的不同方法，特别侧重于利用农业废弃物作为生态友好型吸附剂的吸附技术。文章全面回顾了活化化学品、方法和各种表征技术，如傅立叶变换红外光谱、BET、SEM-EDX 和生物吸附剂材料。在我们的研究中，我们采用了各种模型，如等温线模型、动力学模型和热力学参数来分析数据。这项研究强调了开展进一步研究的重要性，以便改进处理方法，尽量减少甲基溴污染的负面影响。它还确定了目前缺乏了解的领域。本综述有助于开发具有成本效益且可行的技术，以解决水生环境中的人工染料污染这一全球性问题，从而推广环境友好型废水处理方法。

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引用次数: 0

Recent developments in the synthesis of tetraethylenepentamine-based nanocomposites to eliminate heavy metal pollutants from wastewater through adsorption 通过吸附消除废水中重金属污染物的四乙烯五胺基纳米复合材料合成的最新进展

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2024-10-26 DOI: 10.1016/j.biteb.2024.101982

Noureddine El Messaoudi , Youssef Miyah , Jordana Georgin , Małgorzata Wasilewska , Raul José Alves Felisardo , Houda Moukadiri , Mohammad Saood Manzar , Aaron Albert Aryee , Salah Knani , Md. Mahmudur Rahman

This article talks about how to make and use nanocomposites with a tetraethylenepentamine (TEPA-NCs) core for adsorption purposes to get heavy metals (HMs) out of polluted water. The present review critically discusses the synthesis methods, structural characteristics, and functional properties of newly developed TEPA-NCs, together with mechanisms associated with the adsorption of different types of HMs. The high adsorption capacity for various metal ions is due to the presence of functional groups on the surface of TEPA-NCs. The adsorbents show great potential for reuse since they can be reused for several consecutive cycles while maintaining high removal. Isothermal studies confirm that adsorption is favored at pH close to neutrality. The interactions are mostly physical in nature. The isothermal studies mostly corresponded to the Langmuir model, while the kinetic studies corresponded to the pseudo-second-order model. As future recommendations, it is important to analyze the costs of manufacturing these materials.

本文探讨了如何制造和使用以四乙撑五胺（TEPA-NCs）为核心的纳米复合材料来吸附污染水体中的重金属（HMs）。本综述对新开发的 TEPA-NCs 的合成方法、结构特征和功能特性，以及与吸附不同类型 HMs 相关的机理进行了深入探讨。由于 TEPA-NCs 表面存在官能团，因此对各种金属离子具有很高的吸附能力。这种吸附剂显示出巨大的重复使用潜力，因为它们可以连续重复使用几个周期，同时保持较高的去除率。等温研究证实，pH 值接近中性时吸附效果较好。相互作用主要是物理性的。等温研究大多符合朗缪尔模型，而动力学研究则符合假二阶模型。作为未来的建议，分析制造这些材料的成本非常重要。

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引用次数: 0

Techno-economic feasibility study of macroalgae for anaerobic digestion 大型藻类用于厌氧消化的技术经济可行性研究

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2024-10-26 DOI: 10.1016/j.biteb.2024.101984

Roshni Paul , Lynsey Melville , Aminu Bature , Michael Sulu , Sri Suhartini

The techno-economic feasibility of brown macroalgae biomass species Saccharina latissima (S. Latissima) for anaerobic digestion (AD) in North West Europe was investigated in this research. The feasibility of the biomass as a single feedstock and for co-digestion was tested. In the techno economic analysis, AD of S. Latissima as a single digestion feedstock was found to be economically not viable due to the relatively high price of the macroalgae biomass. However, co-digestion with sugar beet — vegetable mix combined with a gate fee of 29 Euros per tonne was found to be economically viable with the macroalgae biomass priced at 50 Euros per tonne.

本研究调查了在西北欧将棕色大型藻类生物质 Saccharina latissima（S. Latissima）用于厌氧消化（AD）的技术经济可行性。对该生物质作为单一原料和联合消化的可行性进行了测试。在技术经济分析中发现，由于大型藻类生物质的价格相对较高，将 S. Latissima 作为单一消化原料进行厌氧消化在经济上并不可行。然而，在大型藻类生物质的价格为每吨 50 欧元的情况下，与甜菜-蔬菜混合物共同消化，并收取每吨 29 欧元的入门费，在经济上是可行的。

引用次数: 0

Recent developments and future prospects of micro-organisms in enhancement of soil for geotechnical engineering applications: A review 微生物在岩土工程应用中改良土壤的最新进展和未来前景：综述

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2024-10-24 DOI: 10.1016/j.biteb.2024.101979

Ambuj Kumar Shukla, Anil Kumar Sharma

Microbially Induced Carbonate Precipitation (MICP) is a promising and adaptable technology with numerous applications in geotechnical engineering promoting cleaner technology via the utilization of microbes. Microbial metabolic processes mediate the process resulting in the precipitation of calcium carbonate. The review presented here gives an in-depth examination of MICP, delving into its underlying mechanisms, key influencing factors, and prospects. It addresses the important elements shaping the MICP technique such as microbial strains, soil properties and its geometry, optimization of cementation solution, and the surrounding conditions including pH and temperature, etc. The various application methods of these microbial strains to the soil have been incorporated in this paper offering insights into their application process tailored to different soil and surrounding conditions. The paper further highlights the benefits of utilizing micro-organisms in soil improvement to potentially replace the conventional methods, partially or fully. Along with its intended uses, MICP's drawbacks and restrictions like microbial viability and the carbonate precipitates long-term stability are examined. Additionally, the financial implication of the utilization of micro-organisms in the improvement of geotechnical enhancement of soil has also been shed light upon. The analysis goes into great detail and provides additional information on possible future opportunities. It also effectively highlights current advancements in the field of MICP, harnessing its full potential and contributing toward a wholesome understanding of the microbiological process (MICP) in improving the behaviour of soils for geotechnical applications.

微生物诱导碳酸盐沉淀（MICP）是一项前景广阔、适应性强的技术，在岩土工程中应用广泛，可通过利用微生物促进清洁技术的发展。微生物代谢过程是碳酸钙沉淀的介导过程。本文对 MICP 进行了深入研究，深入探讨了其基本机制、关键影响因素和发展前景。文章探讨了影响 MICP 技术的重要因素，如微生物菌株、土壤特性及其几何形状、固结溶液的优化以及周围环境（包括 pH 值和温度）等。本文还介绍了这些微生物菌株在土壤中的各种应用方法，深入探讨了它们在不同土壤和周围条件下的应用过程。本文进一步强调了利用微生物改良土壤的益处，有可能部分或全部取代传统方法。除了其预期用途，本文还探讨了 MICP 的缺点和限制，如微生物的生存能力和碳酸盐沉淀物的长期稳定性。此外，还阐明了利用微生物改善土壤岩土工程的财务影响。该分析非常详细，并就未来可能出现的机遇提供了更多信息。它还有效地突出了目前在 MICP 领域取得的进展，充分发挥了其潜力，并有助于全面了解微生物过程（MICP）在改善岩土工程应用中的作用。

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引用次数: 0

Identification of optimal laccases for chlorinated phenol degradation: Insights from molecular modelling, docking, dynamics, and free energy calculations 鉴定降解氯化苯酚的最佳裂解酶：分子建模、对接、动力学和自由能计算的启示

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2024-10-23 DOI: 10.1016/j.biteb.2024.101978

Raja Singh Rawal, Sunil Kumar Suman

This study aimed to investigate the interactions between twenty different bacterial and fungal laccases and chlorinated phenols (CPs), which are listed as priority pollutants by the United States Environmental Protection Agency (USEPA). Molecular docking was used to identify the optimal laccase for degrading CPs out of twenty selected laccases to save time and reduce the in vitro selection of laccase for CPs degradation. The average binding energies of CPs with bacterial and fungal laccases were − 4.72 kcal/mol and − 5.21 kcal/mol, respectively. Based on the highest average binding energies Trametes versicolor (fungus) and Xanthomonas arboricola (bacteria) laccase apo and bound forms were investigated for stability and interaction dynamics using a 200 ns molecular dynamic simulation. The root mean square deviations (RMSD) of T. versicolor and X. arboricola laccase bound forms were within the 0.25 nm and 0.5 nm limit. The radius of gyration (Rg) for all laccases bound forms remained within the range from 1.88 to 2.24 nm with majority of residues in root mean square fluctuations (RMSF) were within the 0.24 nm and found consistent with the laccase apo values. In an aqueous solution, at ∼300 K and ∼ 1 bar pressure, laccase stability with CPs is facilitated by hydrophobic interactions, hydrogen bonds, and van der Waals forces. The corresponding computational insights will be advantageous for the selection, design and application in engineering of laccases for in vitro CPs degradation.

本研究旨在调查二十种不同的细菌和真菌漆酶与氯化酚（CPs）之间的相互作用，氯化酚被美国环境保护局（USEPA）列为优先污染物。为了节省时间和减少体外选择漆酶降解氯化石蜡的工作，研究人员利用分子对接技术从二十种漆酶中找出了降解氯化石蜡的最佳漆酶。氯化石蜡与细菌和真菌漆酶的平均结合能分别为- 4.72 kcal/mol和- 5.21 kcal/mol。根据最高的平均结合能，利用 200 毫微秒分子动力学模拟研究了多色曲霉（真菌）和 arboricola 黄单胞菌（细菌）漆酶的非结合型和结合型的稳定性和相互作用动力学。T. versicolor 和 X. arboricola 漆酶结合形式的均方根偏差（RMSD）分别在 0.25 nm 和 0.5 nm 的范围内。所有漆酶结合形式的回旋半径（Rg）保持在 1.88 至 2.24 nm 的范围内，大多数残基的均方根波动（RMSF）在 0.24 nm 以内，与漆酶的apo值一致。在水溶液中，在 300 K 和 1 bar 压力下，疏水相互作用、氢键和范德华力促进了漆酶与氯化石蜡的稳定性。相应的计算见解将有助于体外降解氯化石蜡的漆酶的选择、设计和工程应用。

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引用次数: 0

Bentonite-verbena biochar composite for anionic dye removal: Investigation, simulation and modeling 用于去除阴离子染料的膨润土-文竹生物炭复合材料：调查、模拟和建模

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2024-10-22 DOI: 10.1016/j.biteb.2024.101981

Rachid Et-Tanteny , Ibrahim Allaoui , Bouchta El Amrani , Imad Manssouri , Fath-Ellah Laghrib , Khalid Draoui

This research investigates the potential of a novel bentonite-verbena biochar composite for the removal of methyl orange from wastewater. Comparative adsorption studies demonstrated that this biocomposite significantly outperforms traditional adsorbents, exhibiting an 83.12 % improvement over raw bentonite. The molecular dynamics simulation revealed the specific mechanism for the enhanced synergistic effect observed between bentonite and biochar in the adsorption of methyl orange. Furthermore, the impact of operational parameters (adsorbent mass, pH, contact time and initial dye concentration) on the adsorption process was systematically evaluated. However, nonlinear modeling indicated that the pseudo-second-order kinetic model and the Dubinin-Radushkevich isotherm model best described the kinetic and adsorption process. This biocomposite, composed of verbena biochar, shows outstanding adsorption performance for methyl orange, anionic dye, opening up new avenues for the development of innovative and sustainable adsorbent materials derived from bioresources.

本研究探讨了一种新型膨润土-文竹生物炭复合材料去除废水中甲基橙的潜力。比较吸附研究表明，这种生物复合材料的性能明显优于传统吸附剂，与未加工的膨润土相比，提高了 83.12%。分子动力学模拟揭示了膨润土和生物炭在吸附甲基橙时增强协同效应的具体机制。此外，还系统地评估了操作参数（吸附剂质量、pH 值、接触时间和初始染料浓度）对吸附过程的影响。然而，非线性建模表明，伪二阶动力学模型和 Dubinin-Radushkevich 等温线模型最能描述动力学和吸附过程。这种由马鞭草生物炭组成的生物复合材料对阴离子染料甲基橙具有出色的吸附性能，为开发源自生物资源的创新型可持续吸附材料开辟了新途径。

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引用次数: 0

Steam reforming of methanol, ethanol, acetic acid, acetone, and bio-oil for hydrogen generation: Catalytic and mechanistic insight 甲醇、乙醇、醋酸、丙酮和生物油的蒸汽转化制氢：催化和机理研究

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2024-10-22 DOI: 10.1016/j.biteb.2024.101980

Aamir Baig , Sonal

Steam reforming of ethanol, methanol, acetone, acetic acid, and crude bio-oil is a viable source of hydrogen generation. Several reports suggest the successful conversion of these five distinct feeds into hydrogen at the laboratory scale. A generalized process approach that may help to deal with several operational challenges is missing. The review analyzes all the important reaction parameters and their effect on the hydrogen yield and feed conversion for individual feed and draws a generalized conclusion. A number of catalytic systems, including Ni, Co, and Rh, are active towards the steam reforming reaction. Furthermore, a review of the current knowledge on the reaction mechanism provides insight into the connection between catalyst structure and its effectiveness and provides a broader outlook to synthesize high-performing steam reforming catalysts. In the end, data compiled from the literature shows the various trends of feed conversion and hydrogen yield at varying parameters.

乙醇、甲醇、丙酮、醋酸和粗生物油的蒸汽转化是一种可行的制氢来源。一些报告表明，在实验室规模上，这五种不同的原料都能成功转化为氢气。但目前还缺少一种通用的工艺方法，可以帮助解决一些操作难题。本综述分析了所有重要的反应参数及其对每种原料的氢气产量和原料转化率的影响，并得出了概括性结论。包括 Ni、Co 和 Rh 在内的多种催化体系对蒸汽重整反应具有活性。此外，对当前反应机理知识的回顾还有助于深入了解催化剂结构与其有效性之间的联系，并为合成高性能的蒸汽转化催化剂提供了更广阔的前景。最后，从文献中收集的数据显示了不同参数下进料转化率和氢气产量的各种趋势。

引用次数: 0

Catalytic pyrolysis of Padina sp. with ZSM-5 and Amberlyst-15 catalysts to produce aromatic-rich bio-oil 使用 ZSM-5 和 Amberlyst-15 催化剂催化热解 Padina sp.

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2024-10-20 DOI: 10.1016/j.biteb.2024.101974

Apip Amrullah , Obie Farobie , Herry Irawansyah , Ismadi , Lusi Ernawati , Muhammad Aziz , Widya Fatriasari

The growing demand for renewable energy has increased interest in bio-oil production from biomass, particularly through catalytic co-pyrolysis. However, research on marine biomass like Padina sp. is limited. This study investigates the catalytic co-pyrolysis of Padina sp. using ZSM-5 and Amberlyst-15 catalysts to enhance aromatic-rich bio-oil production. Systematic experiments were conducted with varying catalyst loadings (1 %, 2 %, and 3 %) and temperatures (400 °C, 500 °C, and 600 °C). GC/MS analysis revealed that Amberlyst-15 at 600 °C and 3 % loading achieved a 65 % aromatic hydrocarbon yield, surpassing ZSM-5, which reached 50 %. Additionally, the highest conversion efficiency, 50 %, was attained with Amberlyst-15 at 500 °C and 3 % loading. These findings highlight the viability of Padina sp. as a renewable biofuel source and emphasize the importance of catalyst selection and process optimization in refining bio-oil production techniques, suggesting that further improvements in catalyst compositions and parameters could advance sustainable bio-oil production for renewable energy.

由于对可再生能源的需求不断增长，人们对从生物质中生产生物油的兴趣日益浓厚，特别是通过催化协同热解。然而，对 Padina sp.等海洋生物质的研究还很有限。本研究采用 ZSM-5 和 Amberlyst-15 催化剂对 Padina sp.进行催化共热解，以提高富含芳香烃的生物油产量。在不同的催化剂负载量（1%、2% 和 3%）和温度（400 °C、500 °C 和 600 °C）下进行了系统实验。GC/MS 分析表明，Amberlyst-15 在 600 °C 和 3% 负载条件下的芳香烃产量达到 65%，超过了 ZSM-5 的 50%。此外，Amberlyst-15 在 500 °C 和 3% 负载条件下的转化效率最高，达到 50%。这些发现突显了 Padina sp.作为可再生生物燃料来源的可行性，并强调了催化剂选择和工艺优化在完善生物油生产技术中的重要性，表明进一步改进催化剂成分和参数可促进可再生能源的可持续生物油生产。

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引用次数: 0

Improved fermentation strategies for enhancing polyhydroxybutyrate production from paper mill fiber rejects 改进发酵策略，提高造纸厂纤维废渣的聚羟丁酸产量

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2024-10-20 DOI: 10.1016/j.biteb.2024.101976

Linjing Jia , Gundeep Kaur , Ankita Juneja , Erica L.-W. Majumder , Bandaru V. Ramarao , Deepak Kumar

This study explores upcycling non-recyclable fiber rejects from recycled paper mills, rich in structural carbohydrates (∼50 %), into polyhydroxybutyrate (PHB), a biodegradable plastic alternative. The process involved biomass pre-cleaning, pretreatment, and fermentation to enhance PHB yields. Pre-cleaning, including repulping and screening, reduced ash content from 30.4 % to 20 %. Sequential hydrothermal pretreatment (150 °C for 10 min) followed by disk milling (3 cycles) was applied, achieving sugar yields exceeding 60 g/L during enzymatic hydrolysis. The hydrolysate was then used as the sole carbon source for PHB production by recombinant E. coli LSBJ. The study systematically optimized carbon source loading and inoculation size to maximize PHB production. Under optimal conditions, using 50 g/L reducing sugar and a 2.5 % inoculum, the highest PHB titer and yield achieved were 14.7 g/L and 0.29 g/g sugar, with a productivity of 0.2 g/L-h, surpassing previously reported titers from lignocellulosic materials at the shake-flask scale.

本研究探讨了将再生纸厂产生的不可回收纤维废料（富含结构碳水化合物（50%∼50%））升级回收为聚羟基丁酸（PHB），一种生物可降解塑料替代品。该工艺包括生物质预清洁、预处理和发酵，以提高 PHB 产量。预清洁（包括再制浆和筛选）可将灰分含量从 30.4% 降至 20%。采用顺序水热预处理（150 °C，10 分钟），然后进行圆盘研磨（3 个周期），在酶水解过程中，糖产量超过 60 克/升。水解产物被用作重组大肠杆菌 LSBJ 生产 PHB 的唯一碳源。该研究对碳源负载和接种量进行了系统优化，以最大限度地提高 PHB 产量。在最佳条件下，使用 50 克/升还原糖和 2.5 % 的接种量，PHB 的最高滴度和产量分别为 14.7 克/升和 0.29 克/克糖，生产率为 0.2 克/升-小时，超过了之前报道的在摇瓶规模下从木质纤维素材料中获得的滴度。

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引用次数: 0

Enhanced photo-oxidation of hormones in water using biomass waste-derived hydrochar composites as photocatalysts 使用生物质废弃物衍生的水碳复合材料作为光催化剂增强水中激素的光氧化反应

Q1 Environmental Science

Bioresource Technology Reports

Pub Date : 2024-10-19 DOI: 10.1016/j.biteb.2024.101977

Siara Silvestri , Ágatha E. Duarte , Gabriela G. Bueno , Elvis Carissimi , André R. Fajardo

This study introduces a green chemistry approach to enhance the catalytic efficiency of metal oxides in photocatalytic reactions using agro-industrial waste. Specifically, rice husks and spent coffee grounds were utilized as carbon sources to produce hydrochars, which served as sustainable supports for ZnO and ZnFe₂O₄ oxides. This method promotes waste minimization and circularity by repurposing agricultural byproducts, reducing the environmental impact of traditional catalyst production. The hydrochars were synthesized through mild hydrothermal carbonization (250 °C for 4 h) and characterized by various physicochemical analyses. Their photocatalytic performance was evaluated using a 20 mg L⁻¹ solution of conjugated estrogens under ultraviolet light (120 W cm⁻²) for 30 min. Composites with ZnO exhibited a significant increase in oxidation reaction rates due to enhanced porosity and an oxygen-rich structure. Reactive oxygen species (ROS) analysis revealed hydroxyl radicals (OH) as the primary agents, with photocatalytic efficiencies exceeding 83 % after eleven cycles. In toxicity tests, 4 mL of treated solution was applied to 20 Lactuca sativa (lettuce) seeds, kept in the dark at 25 °C for 7 days. Seeds exposed to treated solutions showed improved radicle elongation and germination rates compared to controls, except for those with coffee hydrochar and ZnO. This indicates effective degradation of toxic estrogens without harmful by-products. Overall, this work highlights the advantages of integrating green chemistry principles and circular economy practices, transforming waste into valuable materials to enhance environmental sustainability and catalytic performance.

本研究介绍了一种利用农用工业废物提高金属氧化物在光催化反应中催化效率的绿色化学方法。具体而言，研究人员利用稻壳和废咖啡渣作为碳源生产出水炭，作为氧化锌和锌铁氧化物的可持续支撑物。这种方法通过重新利用农业副产品，减少了传统催化剂生产对环境的影响，从而促进了废物最小化和循环利用。通过温和的水热碳化（250 °C，4 小时）合成了水合碳，并通过各种理化分析对其进行了表征。使用 20 mg L-1 的共轭雌激素溶液在紫外线（120 W cm-2）下照射 30 分钟，对它们的光催化性能进行了评估。由于孔隙率和富氧结构的增强，氧化锌复合材料的氧化反应速率显著提高。活性氧（ROS）分析表明，羟基自由基（OH）是主要物质，光催化效率在 11 次循环后超过 83%。在毒性试验中，将 4 毫升处理过的溶液涂抹在 20 颗莴苣种子上，在 25 °C 黑暗环境中保存 7 天。与对照组相比，接触过处理溶液的种子的胚根伸长率和发芽率都有所提高，但咖啡炭和氧化锌处理过的种子除外。这表明可以有效降解有毒的雌激素，且不会产生有害的副产品。总之，这项工作凸显了绿色化学原理与循环经济实践相结合的优势，将废物转化为有价值的材料，从而提高环境的可持续性和催化性能。

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引用次数: 0