Feedstock For Biodiesel Production Research Articles

Cashew nut shell oil as a potential feedstock for biodiesel production: An overview.

Biodiesel outperforms diesel in emissions and engine performance. They burn efficiently in diesel engines and are eco-friendly. Since cashew nut shell liquid (CNSO) is waste, commercial biodiesel production from it should be profitable. CNSO is cheap and can reduce cashew processing factory waste. From cashew kernels, CNSL is extracted using various mechanical, thermal, and solvent extraction techniques. This article examines current research into using cashew nutshell liquid biodiesel (CNSLBD) in diesel engines. The work also discusses Indian biodiesel demand, availability, export information, life cycle cost analysis, cost economics of per hectare yield, Indian government initiative of CNSO. This review also evaluates the viability of this fuel as an alternative energy source. CNSLBD is a prospective alternative fuel that has the potential to benefit both the cashew nut industry and the energy industry. In addition to this, the study examines the procedures for extracting CNSO. According to the findings of the study, CNSO is a prospective alternative fuel that has the potential to benefit both the cashew nut industry and the energy industry.

Valorization of palm oil mill effluent via enhanced oil recovery as an alternative feedstock for biodiesel production.

Residual oil from palm oil mill effluent (POME) can be valorized into value-added products like biofuel. However, the complex structure in POME limits the full recovery of intracellular lipids. To address this challenge, low-frequency ultrasonication was used as a pre-treatment prior to oil recovery to improve the yield by liberating the entrapped oil via the cell disruption technique. This study focused on optimizing the ultrasound conditions (i.e., ultrasonication amplitude, ultrasonication duration, and probe immersion depth) to maximize the improvement of oil recovery yield using response surface methodology. The optimized conditions were 30.074% ultrasonication amplitude, 0.167 min ultrasonication duration, and 2 cm probe immersion depth. This resulted in an additional 42.50% improvement in oil recovery yield over non-ultrasonicated POME, which is in close agreement with the model prediction. Additionally, a cost-benefit analysis was incorporated to determine the feasibility of ultrasonication for enhancing oil recovery. The study also explored the synthesis of biodiesel from POME-recovered oil and characterized the fuel attributes according to American Society for Testing and Materials- and European Standards-prescribed procedures. The attributes of biodiesel produced from POME-recovered oil are comparable to those of palm-based biodiesel in Malaysia, demonstrating its potential as an alternative source for biodiesel production.

A Review on Biodiesel Production, Analysis, and Emission Characteristics from Non‐Edible Feedstocks

AbstractBiodiesel produced from different edible and non‐edible feedstocks is a viable alternative option for fueling a combustion engine. However, the widespread use of edible sources for biodiesel production may lead to food versus fuel controversy. Oil from non‐edible feedstock is best possible solution for problems that inhibits biodiesel production on commercial scale. This study presents the potential of different non‐edible feedstock for biodiesel production. Several aspects such as extraction technologies used for extracting oil from non‐edible sources and biodiesel production pathways from non‐edible feedstocks are discussed. The quality of biodiesel should be assured before its commercialization by different physical and chemical characterization techniques are used. In particular, the emission comparison of biodiesel derived from the different non‐edible feedstocks is discussed. Based on this study, the non‐edible feedstocks have the potential to produce biodiesel but still it has a long way to go. This is due to non‐edible feedstock is in the R&D phase and needs more research to eliminate additional treatment steps compared to edible feedstock for economic aspects. Furthermore, there has been a trade off in emission properties of biodiesels produced from non‐edible feedstocks which must be removed or evaluated for pilot scale investigations before commercialization.

Impact of biodiesel on engine performance and emission

The automobile sector mainly depends upon fossil fuels, and the combustion of these fuels contributes approximately 24% of global carbon dioxide (CO2) emissions. Biodiesel has properties similar to diesel and is considered a vital alternative to diesel. The advantages of biodiesel are its higher cetane number, better lubrication property and the presence of approximately 10% oxygen molecule which results in a reduced amount of carbon monoxide, hydrocarbons and smoke emissions compared to diesel operations. However, biodiesel exhibits a lower calorific value and higher viscosity, and resulting in lower brake thermal efficiency and higher brake specific energy consumption compared to diesel. This paper gives an outline of the significance of biodiesel as an alternative to diesel fuel. The article provides an overview of selection of various feedstock for biodiesel production, and their characterization with focus on their vital properties. The impact of biodiesel on engine performance and emissions, including challenges and future prospects, is also covered in this work.

Fenneropeanus indicus Shrimp Shell and Fishmeal Oil: A Novel Feedstock for Biodiesel Production and Bio Derived Heterogeneous Catalyst Development

Fenneropeanus indicus Shrimp Shell and Fishmeal Oil: A Novel Feedstock for Biodiesel Production and Bio Derived Heterogeneous Catalyst Development

Innovative Approaches to Enhanced Enzymatic Microalgae‐to Biodiesel Production

AbstractDespite the increasing interest in biodiesel production from microalgae, the high cost of multistage production processes still hinders its commercialization. The high oil productivity of microalgae and their ability to grow rapidly under harsh conditions and in saline water make them a favorable feedstock for biodiesel production. In this review, conventional methods of producing biodiesel from microalgae are thoroughly discussed and compared to state‐of‐the‐art technologies. Considerable emphasis has been put on the adoption of biocatalysts as alternative greener and more effective catalysts. Challenges facing the biocatalytic process and innovative ways to overcome them are also presented. The main focus is on the in‐situ biodiesel production processes, which are promising to pave the way for industrial application of microalgae‐to‐biodiesel process. The use of state‐of the‐art thermoresponsive switchable solvents, coupled with immobilized lipase, for simultaneous cell disruption, oil extraction‐reaction, and product separation in one pot has shown to be highly favorable. Because enzymes are expensive, finding ways to enhance their stability and reusability for a greater number of cycles is essential for the process to be economically viable and competitive.

Comparative Analysis of Biodiesel Production by Transesterification and Interesterification of Rothmannia longiflora Seed oil using a Heterogeneous Catalyst

Biodiesel is a promising alternative fuel with better characteristics over petro-based fuels. It is conventionally produced via transesterification of vegetables oil with methanol. Chemical interesterification is another alternative route for conversion of vegetables oil to biodiesel. It yields a value-added co-product, triacetin as against glycerol formed as by-product by transesterification. In this study transesterification and chemical interesterification of Rothmannia seeds oil was investigated using calcined swan mussel shell (Anodantacygnea) as solid base catalyst prepared by hydrothermal treatment and characterized using FT-IR, XRF and XRD analysis. Reaction parameters were optimized, with optimal methanol/oil ratio of 1:6, catalyst amount of 1.0g, reaction time of 60 minutes and reaction temperature of 55oC, achieving maximum yield of 93.47 % via transeterification while for interesterification, the optimum yield of 87.50 % was achieved at catalyst amount of 1.5g, reaction temperature of 60oC, reaction time of 90 minutes and methyl acetate/oil of 9:1. Transesterification of the seed oil shows better conversion of triglycerides compared to chemical interesterification. Some important fuel properties were determined and compared with ASTMD standard. The study has revealed potentials of Rothmannia longiflora seed oil as feedstock for biodiesel production. 

Development of a supply chain model for the production of biodiesel from waste cooking oil for sustainable development

The increasing demand for energy and the severe environmental and economic repercussions have contributed to the development of renewables options. The scarcity of fossil fuels and their negative effect on the environment have sparked an alarming situation for alternative energy sources that are cleaner and more sustainable. Waste cooking oil is a valuable feedstock for biodiesel production, but it is often disposed of improperly, causing environmental pollution and health hazards. The current waste cooking oil supply chain in Pakistan and other countries is fragmented, inefficient, and often unregulated, leading to a lack of standardization and quality control. The study aims to develop a comprehensive supply chain model that integrates waste cooking oil collection, transportation, processing, and biodiesel production to create a sustainable value chain that benefits the environment, the economy, and society as a whole. The proposed optimization approach reduces the total expenses associated with the activities of the biodiesel supply chain. Modified possibilistic chance constrained programming (MPCCP) is used as a solution technique to represent this uncertainty. The MPCCP model is solved with the assistance of Lingo 18.0, while fuzzy logic demand forecasting was done using MATLAB. Accordingly, the fuzzy logic designer (FLD) simulation was conducted to demonstrate the applicability and effectiveness of FLD simulation for the particular kind of issue being considered. The research, not only focuses on mitigating environmental and health risks associated with improper waste cooking oil disposal, resulting in reduced pollution and a cleaner environment but it also advocates for the efficient utilization of waste cooking oil as a valuable feedstock for biodiesel production, thereby promoting a more sustainable and renewable energy source. By optimizing supply chain activities and minimizing costs, the research contributes to enhancing economic growth and efficiency within the biodiesel industry. This research encourages further exploration and collaboration among researchers and stakeholders to expand the applications of the proposed model in waste management, renewable energy, and supply chain optimization.

Biodiesel Production from Waste Cooking Oil via β-Zeolite-Supported Sulfated Metal Oxide Catalyst Systems.

Waste cooking oil (WCO) is a readily available and cheap feedstock for biodiesel production. However, WCO contains high levels of free fatty acids (FFAs), which negatively impact the biodiesel yield if homogeneous catalysts are used. Heterogeneous solid acid catalysts are preferred for low-cost feedstocks because the catalysts are highly insensitive to high levels of FFA in the feedstock. Therefore, in the present study, we synthesized and evaluated different solid catalysts, pure β-zeolite, ZnO-β-zeolite, and SO42-/ZnO-β-zeolite for the production of biodiesel using WCO as feedstock. The synthesized catalysts were characterized by Fourier transform infrared spectroscopy (FTIR), pyridine-FTIR, N2 adsorption-desorption, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy, while the biodiesel product was analyzed using nuclear magnetic resonance (1H and 13C NMR) and gas chromatography-mass spectroscopy. The results revealed that the SO42-/ZnO-β-zeolite catalyst showed excellent catalytic performance for simultaneous transesterification and esterification of WCO, with a higher percentage conversion than the ZnO-β-zeolite and pure β-zeolite catalyst, due to the large pore size and high acidity. The SO42-/ZnO-β-zeolite catalyst exhibits 6.5 nm pore size, a total pore volume of 0.17 cm3/g, and high surface area of 250.26 m2/g. Experimental parameters such as catalyst loading, methanol:oil molar ratio, temperature, and reaction time were varied in order to establish the optimal parameters. The highest WCO conversion of 96.9% was obtained using the SO42-/ZnO-β-zeolite catalyst under an optimum reaction condition of 3.0 wt % catalyst loading, 200 °C reaction temperature, and 15:1 molar ratio of methanol to oil in 8 h reaction time. The WCO-derived biodiesel properties conform to the ASTM6751 standard specification. Our investigation of its kinetics revealed that the reaction follows a pseudo first-order kinetic model, with an activation energy (Ea) of 38.58 kJ/mol. Moreover, the stability and reusability of the catalysts were evaluated, and it was found that the SO42-/ZnO-β-zeolite catalyst exhibited good stability, giving a biodiesel conversion of over 80% after three synthesis cycles.

Biodiesel potential of Cucumeropsis mannii (white melon) seed oil: A neglected and underutilized resource in Nigeria

A major challenge in the biodiesel industry is the availability of high-quality vegetable oil feedstocks. Thus, there is a continuous search for quality biodiesel feedstock whose production will trigger economic impact on the agricultural sector, minimize land degradation and without significant disruption to the food chain. In this work, we extracted and analysed oil from neglected and underutilized Cucumeropsis mannii seeds for their potential in biodiesel production. The oil content of C. mannii seed was 40.8 ± 0.56%. GC-MS analysis of the oil revealed the presence of 47.0% saturated fatty (predominantly palmitic acid, stearic acid) and 53.0% of unsaturated fatty acids (predominantly oleic, linoleic and erucic acids). The physicochemical properties were determined and values were as follows: iodine value (111.07 ± 0.15 g/100 g), saponification value (192.03 ± 0.37 mg/kg of oil), peroxide value (2.60 ± 0.10 meq/kg), acid value (4.20 ± 0.02 mgKOH/g) free fatty acid (2.51 ± 0.02%), relative density (0.93 ± 0.02), the refractive index at 28 °C (1.46 ± 0.04) and viscosity at 30 °C (3.00 ± 0.10 mm2/s). The fuel properties namely, cloud point, pour point, flash point and caloric value were determined and the values were 3.03 ± 0.11 °C, 1.00 ± 0.10 °C, 279.04 ± 0.99 °C and 31.10 ± 0.11 MJ/kg, respectively. In addition, the protein content of the defatted seed was found to be 47.4 ± 0.61 g/100 g. The defatted protein-rich cakes can be upgraded as a food additive; thus the C. mannii seed oil can serve as biodiesel feedstock without altering the food chain. These characteristics demonstrate the potential of C. mannii oil as a high-quality feedstock for biodiesel production. We envisage that its utilization as biodiesel feedstock will improve the market value of these seeds, thus supporting the economic development of local farmers in rural areas.

Utilization of zinc doped biochar catalyst for biodiesel production from waste cooking oil: process optimization and characterization

Biodiesel, an eco-friendly and sustainable alternative to diesel, has gained increasing interest over the past few years. The reuse of waste cooking oil as a feedstock for biodiesel production is affordable and environmentally safe. This study aimed to understand the understudied benefits of using zinc-doped biochar as a catalyst for biodiesel production. The zinc-doped biochar catalyst was characterized using techniques such as scanning electron microscope with energy-dispersive X-ray (SEM-EDAX) analysis and Fourier transform infrared (FTIR) analysis, which revealed the morphological and functional characteristics of the catalyst. The optimum process conditions were found to be catalyst concentration of 3.92% (w/w), methanol-to-oil molar ratio of 16:1, reaction temperature of 65 °C, and reaction duration of 66.5 min; these conditions yielded 94.1% biodiesel using a response surface optimization technique. The produced biodiesel was analyzed using gas chromatography-mass spectrometry, and the presence of methyl esters was confirmed. The use of waste cooking oil and biochar catalyst for biodiesel production is an economical and environmentally sustainable process.

Process Assessment of Integrated Hydrogen Production from By-Products of Cottonseed Oil-Based Biodiesel as a Circular Economy Approach

Cottonseed oil (CSO) is well known as one of the commercial cooking oils. However, CSO still needs to compete with other edible oils available in the market due to its small production scale and high processing cost, which makes it a potential candidate as a feedstock for biodiesel production. To date, transesterification is the most widely applied technique in the conversion of vegetable oil to biodiesel, with glycerol produced as a by-product. Large-scale biodiesel production also implies that more glycerol will be produced, which can be further utilized to synthesize hydrogen via the steam reforming route. Therefore here, an integrated biodiesel and hydrogen production from CSO was simulated using Aspen Hysys v11. Simulation results showed that the produced biodiesel has good characteristics compared to standard biodiesel. An optimum steam-to-glycerol ratio for hydrogen production was found to be 4.5, with higher reaction temperatures up to 750 °C resulting in higher hydrogen yield and selectivity. In addition, a simple economic analysis of this study showed that the integrated process is economically viable.

Production of high-quality biodiesel through methanolysis of Bombyx mori pupae waste oil

ABSTRACT The inadequacy of natural resources to meet the energy demands of the population has led to new and sustainable ways of producing energy such as biodiesel. This study discusses the merits of employing desilked dried Bombyx mori pupae waste as feedstock for biodiesel production. This waste was found to have approximately 40% lipids, 54% proteins, and essential minerals in trace quantities. The maximum neutral lipid yield obtained through chemical extraction varied between 38% and 41% of the feedstock weight. This lipid was transesterified with an acid catalyst resulting in an approximate 90% yield of biodiesel. This product was characterized using GCMS, FTIR, and 1HNMR spectroscopy. These studies have indicated the presence of good-quality biodiesel. This biodiesel was also found to have an induction time of 7.06 hours at 110°C. The physicochemical properties of the produced biodiesel were tested according to standard testing methods and were found to be satisfactory. The produced biodiesel was compared with a commercial biodiesel for its properties, and was found to be superior. The energy value of the silkworm pupae biodiesel showed over 10% increase than commercial biodiesel. This process also doubles as an effective waste management practice for the sericulture industry.

Recent advances on biodiesel production from waste cooking oil (WCO): A review of reactors, catalysts, and optimization techniques impacting the production

The continued economic growth registered since the 1970 s has contributed to an increase in the demand and supply of energy in the main end-use sectors: electricity, heating, cooling, and transportation. This has instigated the search for alternative energy sources with less carbon footprint than that of fossil fuels. In the transportation sector, biodiesel has been reported as a promising alternative to conventional fuels. However, despite its widespread commercialization, cost of biodiesel feedstocks is still a significant problem. This paper reviews the utilization of waste cooking oil as a feedstock for biodiesel production using transesterification, in addition to pathways to increase the quality and efficiency of biodiesel production and decrease its production costs. We have explored pertinent topics such as reactor types, catalysts, other parameters affecting biodiesel production, as well as vital optimization techniques that can be utilized to enhance biodiesel production from waste cooking oil. Finally, we have attempted to present the existing gaps and future challenges in this field, which when circumvented could make this longstanding process more economically viable.

Ex-situ biodiesel production from Simmondsia chinensis (Jojoba) biomass: Process evaluation and optimization

Biodiesel production is explored in the current study through the ex-situ extraction and trans-esterification approach from commercially available Jojoba seed. This biomass is regarded as a beneficial feedstock for biodiesel production as it contains non-edible oil. Also, this feedstock can be cultivated and grown in wastewater and in variable climate conditions. According to the characteristic analysis Jojoba oil is composed of 6.9% saturated fatty acids (4.6% C16:0, 1.3% C18:0 and 0.2% C20:0), 68.7% monounsaturated fatty acids (48% C20:1, 20.2% C18:1 and 0.5% C16:1) and 24.4% polyunsaturated fatty acids (14.8% C18:2, 9.2% C20:2 and 0.4% C18:3). The acid value of crude Jojoba oil is 0.05 mg KOH/ g sample, which feasible the alkaline catalyzed trans-esterification. The effect of variables on oil extraction was explored preliminary through the time-efficient and low-cost central composite design response surface methodology (CCD-RSM). According to the results, 67.51 wt.% saponifiable oil can be extracted from Jojoba seed at 64.5 °C, reaction duration of 187.7 min, rotation rate of 393.2 rpm, and solvent to biomass ratio of 14.6 cc:1 g. The maximum yield of biodiesel production is also obtained at 50 °C, methanol to oil molar ratio (MeOH: Oil) of 5.5:1, reaction time of 2.25 h, and 0.475 wt.% (KOH weight/ oil weight) KOH loading.

Potential non-edible oil seeds for biodiesel production: An Indian context

Both energy demand and energy security are major concerns for all the economies worldwide due to the rising rate of energy consumption and rise in energy consumption per capita. In addition, the use of biofuels in place of conventional petroleum-based fuels has received more attention as a result of the global commitment to environmentally friendly and sustainable energy use. Biodiesel has emerged as potential biodegradable and nontoxic fuel, which significantly decreases toxic and other harmful emissions when used as diesel engine fuel. The major advantages of biodiesel include its higher cetane number, higher combustion efficiency, lower emissions of aromatic and sulfurous compounds, and a high flash point. The current paper discusses about different potential feedstocks for biodiesel production, its properties and impact of combustion of biodiesel on the environment. The findings of the number of biodiesel related studies and techniques to enhance the performance of the biodiesel fueled engines are covered in this paper. The prospects of economics of biodiesel used in India as a blend are also highlighted in the paper.

Persica Akhani Salicornia as novel biodiesel feedstock production for economic prosperity in salty and water scarcity areas: Optimized oil extraction process and transesterification reaction using new magnetic heterogenous nanocatalysts

As a new biodiesel feedstock, the oil extraction procedure from the seeds of the plant Salicornia (Persica Akhani subspecies) has been developed. Oil extraction from the seeds of the Salicornia Persica Akhani has been researched utilizing two different organic solvents and four different procedures, including the Soxhlet method, the traditional approach, the shaker method, and the ultrasonic probe method. The results indicated that oil yield by ultrasonic probe technique was higher than the other methods in a short time. Based on the outcomes, extracting the oil from Salicornia seeds using hexane resulted in a greater yield of oil than petroleum ether. This was true across all methods of extraction. The Physico-chemical properties and antioxidant activity of extracted oil suggested its suitability for biodiesel production. To transesterification reaction of Salicornia seeds oil with methanol into biodiesel, the heterogeneous magnetic Zn0.4Ni0.6Fe2O4 and Zn0.4Ni0.6Fe2O4@SO3H nanocomposites have been synthesized by sol-gel auto combustion procedure. FT-IR, FE-SEM, EDS, and VSM were used to determine the characteristics of the heterogeneous nanocomposites. These nanoparticles have a strong attraction to an outside magnet, which makes it much easier to collect them from the reaction environment for subsequent reuse. In the process of transesterification of Salicornia oil with methanol, novel sulfonated heterogeneous magnetic catalysts with a high density of superacid sites on the surface (2.50 mmol SO3H g−1) and significant magnetization (60 emu/g) afforded high activity and produced a biodiesel yield of 96%. In addition, the magnetic Zn0.4Ni0.6Fe2O4@SO3H nanoparticles could be reused up to five times in the process of turning oil into biodiesel, which resulted in reduced expenses associated with the manufacture of biodiesel. FT-IR and SEM analyses were performed both before and after the transesterification process, and the results showed that the absorption bands and particle distribution were practically the same in both new and used catalysts. The analysis of the FT-IR spectra reveals indications of the transformation of Salicornia oil into fatty acid methyl esters (FAMEs). Gas chromatography (GC) study of the FAME profiles of the as-prepared biodiesel also indicated that palmitic acid (C16:0) was the most saturated fatty acid (8.44%–8.50%), while linoleic acid (18:2) was the predominant unsaturated fatty acid (60.94%–60.97%).

Optimization of ultrasound-assisted oil extraction from Carica candamarcensis; A potential Oleaginous tropical seed oil for biodiesel production

This study focuses on the optimization of ultrasound-assisted oil extraction from Carica candamarcensis seed using response surface methodology. The process parameters considered were extraction time (30–60 min), ultrasound amplitude level (20–40%), and solvent to seed ratio (10–20 mL/g). These were varied as suggested by Box-Behnken experimental model. Optimum values of these process parameters were given by the regression model, with the corresponding extraction yield. The model was validated experimentally to ensure its reliability. Physicochemical properties and fatty acid compositions of the extracted oil were evaluated accordingly. Furthermore, the extracted oil was then converted into biodiesel via ultrasound-assisted transesterification, using potassium hydroxide as the catalyst. FAME contents of the produced biodiesel were measured using gas chromatography. In addition, physicochemical properties of the biodiesel were also determined accordingly. Hence, findings from this study would be beneficial in further exploration on the usage of Carica candamarcensis as a potential feedstock for biodiesel production.

Microbiome differences in sugarcane and metabolically engineered oilcane accessions and their implications for bioenergy production

Oilcane is a metabolically engineered sugarcane (Saccharum spp. hybrid) that hyper-accumulates lipids in its vegetable biomass to provide an advanced feedstock for biodiesel production. The potential impact of hyper-accumulation of lipids in vegetable biomass on microbiomes and the consequences of altered microbiomes on plant growth and lipid accumulation have not been explored so far. Here, we explore differences in the microbiome structure of different oilcane accessions and non-modified sugarcane. 16S SSU rRNA and ITS rRNA amplicon sequencing were performed to compare the characteristics of the microbiome structure from different plant compartments (leaf, stem, root, rhizosphere, and bulk soil) of four greenhouse-grown oilcane accessions and non-modified sugarcane. Significant differences were only observed in the bacterial microbiomes. In leaf and stem microbiomes, more than 90% of the entire microbiome of non-modified sugarcane and oilcane was dominated by similar core taxa. Taxa associated with Proteobacteria led to differences in the non-modified sugarcane and oilcane microbiome structure. While differences were observed between multiple accessions, accession 1566 was notable in that it was consistently observed to differ in its microbial membership than other accessions and had the lowest abundance of taxa associated with plant-growth-promoting bacteria. Accession 1566 is also unique among oilcane accessions in that it has the highest constitutive expression of the WRI1 transgene. The WRI1 transcription factor is known to contribute to significant changes in the global gene expression profile, impacting plant fatty acid biosynthesis and photomorphogenesis. This study reveals for the first time that genetically modified oilcanes associate with distinct microbiomes. Our findings suggest potential relationships between core taxa, biomass yield, and TAG in oilcane accessions and support further research on the relationship between plant genotypes and their microbiomes.

Biodiesel Production Innovation Based on Jatropha Curcas and Soybean Oil

Biodiesel Production Innovation Based on Jatropha Curcas and Soybean Oil Jadesola Mayowa1 1University of Ibadan Abstract The study evaluated the potential of Jatropha curcas and soybean oil as feedstocks for biodiesel production and compared the performance of the biodiesels produced. The biodiesels were characterized and their performance was tested in terms of density, viscosity, engine efficiency, power output, and emissions. The results showed that both biodiesels had similar properties and performance compared to conventional diesel fuel, making them suitable alternatives. However, further research and optimization may be required to improve the properties of the biodiesels and ensure their sustainability as feedstocks for biodiesel production. The study provides valuable information for the development of sustainable and eco-friendly energy solutions based on Jatropha curcas and soybean oil as feedstocks for biodiesel production.