Microbial lipids from municipal solid wastes to advanced aviation and marine e-fuels via catalytic hydrotreatment

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy Pub Date : 2025-04-13 DOI:10.1016/j.biombioe.2025.107866

Athanasios Dimitriadis, Nikos Tourlakidis, Stella Bezergianni

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Abstract

]The current manuscript investigates the technical feasibility for the production of advanced aviation and marine e-fuels from microbial lipids via hydrotreatment. Two microbial lipids produced from municipal solid wastes (spent coffee grounds and orange peels) using the selected oleaginous yeast of the L. starkey and C. curvatus were tested. Due to the limited microbial lipids availability, the free fatty acid composition (FFA) of the microbial lipids derived from each waste was analyzed, based on which various vegetable oils (palm, flaxseed, olive and pumpkin oil) were blended to formulated the two lipid feeds that match by 82 and 84 % the FFA profile to the original ones. The two simulated feedstocks were hydrotreated in a TRL3 plant targeting to optimize the conversion process via the investigation of various operating windows. The optimum operating window for the examined feeds was found at 330 °C, 83 bar pressure, 1 hr⁻¹ LHSV and 840 NL/L hydrogen/oil ratio. Hydroprocessing of the simulated feedstocks was able to lead to diesel and jet range hydrocarbons that consists from N-paraffins up to 95 wt%. Upon the identification of the optimal operating window and feedstock, 10 L of total hydrotreated product was produced and fractionated rendering aviation, marine and road transport hydrocarbons. As the hydrogen for the hydrotreatment plant is produced via solar energy, the produced fuels are called electrified fuels (“e-fuels). The produced e-fuels were evaluated according to standard fuel specifications (Jet A1, DMA, EN 590), showing that good quality road transport, marine and aviation e-fuels can be produced via hydroprocessing of microbial lipids.

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通过催化加氢处理从城市固体废物到先进航空和海洋电子燃料的微生物脂质

目前的手稿研究了通过加氢处理从微生物脂质生产先进航空和海洋电子燃料的技术可行性。利用选定的L. starkey和C. curvatus产油酵母从城市固体废物（废咖啡渣和橘子皮）中产生的两种微生物脂质进行了测试。由于微生物脂质可用性有限，分析了每种废物中提取的微生物脂质的游离脂肪酸组成（FFA），并在此基础上混合了各种植物油（棕榈油、亚麻籽油、橄榄油和南瓜油），配制了两种脂质饲料，其FFA谱与原始饲料匹配度分别为82%和84%。在TRL3装置中对两种模拟原料进行加氢处理，目的是通过对各种操作窗口的研究来优化转化过程。所研究进料的最佳操作窗口为330°C， 83 bar压力，1 hr - 1 LHSV和840 NL/L氢/油比。模拟原料的加氢处理能够产生柴油和喷气范围的碳氢化合物，由n -石蜡组成，高达95%。在确定最佳操作窗口和原料后，生产了10 L的加氢处理产品，并分馏出航空、海洋和公路运输碳氢化合物。由于氢处理厂的氢气是通过太阳能产生的，因此产生的燃料被称为电气化燃料（e-fuels）。根据标准燃料规范（Jet A1， DMA, EN 590）对所生产的电子燃料进行了评估，结果表明，通过对微生物脂质的加氢处理可以生产出高质量的公路运输、海洋和航空电子燃料。

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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.