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Future Science
Biofuels

Future Science

1759-7269

Biofuels/Journal BiofuelsEI
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    Economic analysis of the sustainable aviation fuel supply chain from hybrid poplar in the southeast US considering alternative preprocessing technologies

    Carlos A. Fontanilla-DiazCarlos O. Trejo-PechT. Edward YuJames A. Larson...
    429-444页
    查看更多>>摘要：This study designs and evaluates the economics and spatial configuration of a supply chain for sustainable aviation fuel from hybrid poplar in the southeast US region. Mixed integer linear programming is used to satisfy a hypothetical demand of 120 Mgal year~(-1) for two production systems, one using conventional preprocessing technology (the hammermill system) and the other using a newly introduced technology (the rotary shear system). The economic impact of these preprocessing technologies is evaluated across all supply chain stages, as well as the vehicle mileage traveled. Results suggest that the rotary shear system presents some economic advantages over the hammermill system. Compared to the traditional system, the rotary shear system decreases preprocessing costs by 6.4%, reactor-ready biomass costs by 15.2%, and sustainable aviation fuel production costs by 7.9%. The rotary shear system also requires 25.2% less planted area of hybrid poplar than the hammermill system, thus reducing the vehicle mileage traveled along the supply chain, which has positive implications for emissions and vehicle risk exposure.
      原文链接:
    • NETL
    • NSTL
    • Taylor & Francis

    Bioethanol production from concentrated fruit wastes' juice enhanced with fermentable sugar from millet (Panicum miliaceum)

    Jovine Kamuhabwa EmmanuelShedrack Thomas MgeniJonas Balengayabo GervasLewis Atugonza Mtashobya...
    445-451页
    查看更多>>摘要：Global dependence on expensive fossil fuels for transportation worsens environmental issues like air pollution and climate change, underscoring the need for sustainable, commercially viable alternatives. The aim of the present study was to explore the production of bioethanol fuel from fruit wastes including pineapple, mango, pawpaw, and watermelon, supplemented with millet flour, through a fermentation and distillation method. Physical pre-treatment of fruit wastes revealed a range of total soluble solids of 4.13 ± 0.09-12.0 ± 0.03°Brix. Pineapple juice gave the highest value and watermelon the lowest. The juice mixture and millet produced 25% alcohol content in the first 100 mL aliquot. Results show that pineapple juice with millet produced bioethanol of 43%, followed by mango (20%), pawpaw (15%), and watermelon 7%. Re-distillation produced 90% which has potential applications in transportation, cooking, and lighting. Findings suggest that fruit waste from the studied fruits can be utilized for bioethanol fuel production, promoting sustainable waste management and supporting circular economy. This demonstrates that fruit waste can be utilized to produce high-quality bioethanol fuel, promoting sustainable waste management. It showcases the efficient utilization of fruit waste in bioethanol fuel production when combined with millet flour, a sustainable alternative to fossil fuels.
      原文链接:
    • NETL
    • NSTL
    • Taylor & Francis

    Industry-driven optimization of biomass-based fuel production: balancing cost, efficiency, and sustainability

    Narayan SharmaAnand ChauhanAnubhav Pratap SinghRitu Arora...
    452-461页
    查看更多>>摘要：Growing energy demands and environmental concerns necessitate the exploration of sustainable alternatives. Biodiesel, produced from readily available microalgae like Chlorella, Chlamydomonas and Scenedesmus, presents a promising solution to our dependence on fossil fuels. An optimization framework is proposed to design a cost-effective microalgal biodiesel supply chain. Employing a sophisticated genetic algorithm, the model optimizes the entire biodiesel production chain, from sourcing microalgae to strategic placement of biorefineries and depots. The framework considers costs, biorefinery placement, biodiesel storage and strategic microalgae harvesting centres. The results of optimization using genetic algorithm show that the total cost of the supply chain is minimized to 1:18519e þ 07; with the transportation costs for algae ranging from $0.2 to $1.9 per ton-km. The sensitivity analysis reveals that production and purchasing costs of algae are the most sensitive parameters, significantly impacting the overall cost. Additionally, the efficiency of biodiesel production from microalgae is maximized by optimizing the supply chain, resulting in a 94% conversion rate for Chlorella. These findings highlight balancing cost efficiency and sustainability for environmentally and economically viable large scale biodiesel production. This research paves the way for large-scale, sustainable biodiesel production from microalgae, propelling us towards a greener energy future.
      原文链接:
    • NETL
    • NSTL
    • Taylor & Francis

    Enhanced biofuel dehydration using MXene-PES nanocomposite membranes via pervaporation

    Ramin ShahaliNasibeh HajilaryOmid Bakhtiari
    462-470页
    查看更多>>摘要：Efficient ethanol dehydration is vital for biofuel production, and pervaporation membranes are essential to this process. This study introduces a novel approach to synthesizing MXene nanoparticles, a two-dimensional material with exceptional properties, and incorporating them into polyether sulfone (PES) membranes. Characterization through XRD, FTIR, and RAMAN analyses confirmed the layered structure and chemical bonds of the MXene nanoparticles. The integration of MXene into PES membranes resulted in reduced contact angles, signifying enhanced hydrophilicity. Ethanol dehydration tests demonstrated that nanocomposite membranes with 0.5 wt.% MXene achieved 1.5 times higher permeation flux and 1.2 times higher selectivity compared to unmodified membranes. These performance enhancements are attributed to the improved hydrophilicity, uniform dispersion, and robust interaction of MXene within the polymer matrix. Furthermore, the study highlights that UV irradiation produces superior-quality membranes. This research underscores the potential of MXene-PES nanocomposite membranes to significantly improve the efficiency of biofuel dehydration processes.
      原文链接:
    • NETL
    • NSTL
    • Taylor & Francis

    Optimizing engine performance and emission properties with Garcinia indica biodiesel: a holistic RSM-TLBO-DFA strategy

    Ajith Bintravalli SureshManjunath Patel G. C.Sajjal Basanna PrakashGanesha Thippeshnaik...
    471-488页
    查看更多>>摘要：Garcinia indica (GI) feedstock poses high oil content (45.2%) and after transesterification resulted with 94.8% yield. The GI crude oil, biodiesel, and their blends were tested for fuel characteristics and run in a diesel engine. Response surface methodology based on central composite design experimental matrices was used to model and examine the input variables (engine load, injection timing, injection pressure, and blend type) on engine performance (brake thermal efficiency (BTE), brake specific fuel consumption (BSFC)) and emission characteristics (nitrogen oxide (NOx), unburnt hydrocarbon (UHC), carbon monoxide (CO)). All factors showed significant effects (except injection pressure and injection time for NOx) on all responses. The empirical equations predicted 27 experimental cases with 4.75% accuracy. Desirability function approach was applied to transform all output functions (maximize BTE and minimize BSFC, CO, NOx, and UHC) with different weight fractions (WF) to single composite desirability function for maximization. Teaching learning-based optimization (TLBO) determined optimal condition corresponding to case 4 (maximum WF to CO, minimum WF to BTE, BSFC, UHC, NOx) resulting in highest desirability function value (0.9432) with a percent deviation of 7.09%. The developed models assist novice users in predicting unknown parametric conditions and improving engine performance and emission characteristics without practical experiments.
      原文链接:
    • NETL
    • NSTL
    • Taylor & Francis

    Biodiesel production from non-edible oils using immobilized recombinant lipase from Pseudomonas fluorescens isolated in the Western Ghats, India

    V. SachinN. R. KiranT. M. NingarajuK. N. Chandrashekara...
    489-498页
    查看更多>>摘要：Lipases, essential enzymes for hydrolyzing triglycerides, are widely produced by various microorganisms, including bacteria, fungi, and yeast. Among microbial lipases, those from Pseudomonas species are particularly notable for their thermal resistance and alkaline activity, making them valuable for industrial applications. This study focuses on a novel recombinant lipase gene from Pseudomonas fluorescens AFPF19, aiming to express this gene in Escherichia coli (E.coli) and evaluate its potential for biodiesel production. The lipase gene was successfully isolated, cloned into the pET28a expression vector, and expressed in E. coli BL21 CodonPlusTM (DE3). The recombinant lipase was purified using Ni-NTA affinity chromatography. To enhance the enzyme’s stability and reusability, immobilization techniques were employed. The immobilized lipase demonstrated robust activity in the transesterification of Millettia pinnata oil to produce biodiesel. Various reaction conditions, including oil-to-methanol molar ratios and enzyme concentrations, were optimized to maximize biodiesel yield. Gas chromatography-mass spectrometry (GC-MS) analysis confirmed the high purity of the produced biodiesel, while its properties, such as density, kinematic viscosity, and calorific value, met international standards. This study highlights the potential of using immobilized recombinant lipases for sustainable and efficient biodiesel production, addressing challenges associated with free enzyme use and contributing to the advancement of renewable energy sources.
      原文链接:
    • NETL
    • NSTL
    • Taylor & Francis

    Recent advancements and challenges in the lignocellulosic and algal biomass-based bioethanol production: a review

    Aparna PrasanthanR. Krishna PrasadMurali Balu
    499-518页
    查看更多>>摘要：The sustained increase in global energy needs and environmental impacts from greenhouse gases emitted by burning non-renewable fuels has led to a focus on developing renewable energy sources. Bioethanol can meet future energy demands of nations. Lignocellulosic feedstock and algal biomass are considered effective sources of substrates for converting fermentable sugars into ethanol. The structural configuration of lignin-based cellulosic biomass is modified using integrated pretreatment technologies, including physiochemical and biological methods. The hydrolysis of cellulose with cellulase enzymes consists of cellulase adsorption to the cellulosic surface, disintegration of cellulose polymers into simple sugar compounds, and desorption of cellulase. Soybean straw fermented in Thermoanaerobacterium aotearoense at 55 ℃ and 15 g/L total sugars provided 0.34 g/g ethanol yield. Rice straw feedstock hydrolyzed using cellulase enzymes at 30 ℃, 74 h, and pH 4.5 yielded 0.44 g/g ethanol. The macroalgae species Ulva rigida in solid-state fermentation using Saccharomyces cerevisiae at 37 ℃, pH 5, and 3 h yielded 330 mg/g glucose. The microalga Chlorella vulgaris hydrolyzed at 45 ℃, pH 6, and 48 h using amylases provided a 3.8 g/L ethanol yield. Different fermentation processes for converting reduced sugars into ethanol include submerged, solid-state, and very high-gravity fermentation.
      原文链接:
    • NETL
    • NSTL
    • Taylor & Francis

    Prospects and limitations of existing biofuels and emerging trends in the utilization of nanoparticles for enhanced biofuel production and microbial fuel cell efficiency

    Akanksha SinghAgendra GangwarSanjay Kumar
    519-544页
    查看更多>>摘要：Biofuels, including bioethanol, biogas, biohydrogen, and biodiesel, as well as microbial fuel cells, are extensively recognized as sustainable energy alternatives to fossil fuels. Nonetheless, their commercialization is constrained by various limitations, including economic and technological challenges. The integration of nanoparticles into biofuel production and microbial fuel cell fabrication has demonstrated significant benefits over time due to their nanoscale dimensions and distinctive structural properties. Their use enhances operational efficiency, increases yield, and accelerates the conversion of biomass into biofuels. This review presents a comprehensive global analysis of biofuels and includes a bibliometric analysis of research related to biofuels incorporating nanoparticles. It details the current production methods for various types of biofuels, their specific characteristics, production statistics, and existing gaps in their commercialization. This is followed by an in-depth examination of the role of nanotechnology in biofuel production and microbial fuel cell fabrication, supported by recent studies. The review thoroughly addresses the impact of nanotechnology from multiple perspectives, including environmental and human health considerations, scalability, effects on microbial communities, economic feasibility, and regulatory and ethical challenges. Mitigation strategies for these challenges are also discussed. Additionally, biofuels enhanced with nanoparticles are compared with other advanced technologies currently available.
      原文链接:
    • NETL
    • NSTL
    • Taylor & Francis

    Oxidative stability of biodiesel: challenges and perspectives for the sustainability of a large-scale program in Brazil

    Fabiano Rosa da SilvaFrancis Josiane Liana Baumgardt da SilvaFabio VandresenFabio da Silva Lisboa...
    545-552页
    查看更多>>摘要：In Brazil, the addition of 2% of biodiesel to diesel began to be mandatory in 2008 and reached 14% in 2024, with a prediction of achieving 25% by 2030. This measure, encouraged by public policies, contributes to the decarbonization of the economy and the country’s energy transition, significantly impacting the global efforts against climate crises. This article presents a systematic review of the literature on the oxidative stability of biodiesel. It addresses aspects involving the activation energy of the abstraction of bis-allylic hydrogens from fatty esters, studied by proton nuclear magnetic resonance spectroscopy, up to the cleaning of storage and transport tanks, crucial to avoid points of corrosion which generate metallic ions that catalyze the oxidative processes. The article describes the reaction mechanisms and effectiveness of antioxidants, addressing the lack of studies on the potential for bioaccumulation and toxicity associated with combustion gases. It also discusses how natural antioxidants and agro-industrial residues can enhance the sustainability of continuous and large-scale use of this biofuel.
      原文链接:
    • NETL
    • NSTL
    • Taylor & Francis