Characterization of Several 2-Ethylhexyl Nitrates with Vegetable Oil (Castor or Sunflower Oil) Blends in Triple Blends with Diesel, Working as Advanced Biofuels in C.I. Diesel Engines
Source abstract
Abstract
This study evaluates the performance of biofuels created from triple blends of fossil diesel, sunflower or castor oil (SVOs), and 2-Ethylhexyl Nitrate (EHN), a low-viscosity, high-cetane (LVHC) solvent. EHN reduces the viscosity of SVOs to enable their use in conventional diesel engines without compromising fuel properties. The results show that the power output from these blends is similar to or greater than that of fossil diesel, with comparable fuel consumption. Furthermore, the blends significantly reduce emissions of carbon monoxide (CO) and soot, though NOx emissions are slightly higher due to the nitrogen content in EHN. However, NOx levels remain within permissible limits. The substitution of fossil diesel could be further enhanced if EHN were produced using green hydrogen and lignocellulosic biomass, making it a renewable and sustainable biofuel component. These findings support the potential of EHN/SVO biofuel blends to replace a significant portion of fossil diesel in conventional diesel engines while maintaining performance and reducing harmful emissions, except for a slight increase in NOx.
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Research context
OpenAlex topics: Biodiesel Production and Applications · Advanced Combustion Engine Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Departamento de Química Orgánica, Universidad de Córdoba, Campus de Rabanales, Ed. Marie Curie, 14014 Córdoba, Spain
Funding
MCIN/AEI/10.13039/501100011033 · Unión Europea “NextGenerationEU/PRTR” · FEDER-Andalucia 2021–2027, Junta de Andalucía
References (49)
Show source-provided references
1. Khalili, S., Rantanen, E., Bogdanov, D., and Breyer, C. (2019). Global Transportation Demand Development with Impacts on the Energy Demand and Greenhouse Gas Emissions in a Climate-Constrained World. Energies, 12.10.3390/en12203870 ↗
2. Diversity in Transportation: Why a Mix of Propulsion Technologies Is the Way Forward for the Future Fleet10.1016/j.rineng.2019.100060 ↗
3. Estevez, R., Aguado-Deblas, L., López-Tenllado, F.J., Bautista, F.M., Romero, A.A., and Luna, D. (2024). Internal Combustion Engines and Carbon-Neutral Fuels: A Perspective on Emission Neutrality in the European Union. Energies, 17.10.3390/en17051172 ↗
4. Estevez, R., Aguado-Deblas, L., Bautista, F.M., Luna, D., Luna, C., Calero, J., Posadillo, A., and Romero, A.A. (2019). Biodiesel at the Crossroads: A Critical Review. Catalysts, 9.10.3390/catal9121033 ↗
5. A Review on the Biodiesel Production: Selection of Catalyst, Pre-Treatment, Post Treatment Methods10.1016/j.grets.2023.100061 ↗
6. Nikolopoulos, I., Kordouli, E., Mourgkogiannis, N., Karapanagioti, H.K., Lycourghiotis, A., and Kordulis, C. (2023). Valorization of Pyrolyzed Biomass Residues for the Transformation of Waste Cooking Oil into Green Diesel. Catalysts, 13.10.3390/catal13061004 ↗
7. Pre-Hydrogenation Stage as a Strategy to Improve the Continuous Production of a Diesel-like Biofuel from Palm Oil10.1016/j.renene.2020.12.086 ↗
8. d’Ambrosio, S., Mancarella, A., and Manelli, A. (2022). Utilization of Hydrotreated Vegetable Oil (HVO) in a Euro 6 Dual-Loop EGR Diesel Engine: Behavior as a Drop-In Fuel and Potentialities along Calibration Parameter Sweeps. Energies, 15.10.3390/en15197202 ↗
9. Estevez, R., Aguado-Deblas, L., López-Tenllado, F.J., Luna, C., Calero, J., Romero, A.A., Bautista, F.M., and Luna, D. (2022). Biodiesel Is Dead: Long Life to Advanced Biofuels—A Comprehensive Critical Review. Energies, 15.10.3390/en15093173 ↗
10. Feasibility of Using Less Viscous and Lower Cetane (LVLC) Fuels in a Diesel Engine: A Review10.1016/j.rser.2015.07.042 ↗
11. Combustion Characteristics of Ternary Fuel Blends: Pentanol, Butanol and Vegetable Oil10.1016/j.fuel.2017.01.104 ↗
12. Optimization of Ternary Blends among Refined Palm Oil-Hexanol-Melaleuca Cajuputi Oil and Engine Emissions Analysis of the Blends10.1016/j.renene.2022.07.018 ↗
13. An Investigation to Utilize Ternary Diesel-Palm Fatty Acid Distillate-10 wt% n-Butanol Blends as Simply Novel Diesel Substitutes10.1016/j.fuel.2020.119965 ↗
14. Experimental Investigation of the Effect of Diesel–Cotton Oil–n-Butanol Ternary Blends on Phase Stability, Engine Performance and Exhaust Emission Parameters in a Diesel Engine10.1016/j.fuel.2013.03.012 ↗
15. A Comparative Assessment of Ternary Blends of Three Bio-Alcohols with Waste Cooking Oil and Diesel for Optimum Emissions and Performance in a CI Engine Using Response Surface Methodology10.1016/j.enconman.2017.10.087 ↗
16. Optimisation of Viscosity and Density of Refined Palm Oil-Melaleuca Cajuputi Oil Binary Blends Using Mixture Design Method10.1016/j.renene.2018.10.017 ↗
17. Evaluation of Pine Oil Blending to Improve the Combustion of High Viscous (Castor Oil) Biofuel Compared to Castor Oil Biodiesel in a CI Engine10.1007/s00231-018-2519-8 ↗
18. Calibration of Engine Parameters and Fuel Blend for Vibration and Noise Characteristics in CRDI Engine Fuelled with Low Viscous Biofuel10.1016/j.fuel.2020.119659 ↗
19. The Influence of Hydrogen Induction on The Characteristics of a CI Engine Fueled with Blend of Camphor Oil and Diesel with Diethyl Ether Additive10.1016/j.ijhydene.2023.03.188 ↗
20. Performance and Emissions of Straight Vegetable Oils and Its Blends as a Fuel in Diesel Engine: A Review10.1016/j.rser.2017.09.080 ↗
21. The Production of Biodiesel from Castor Oil as a Potential Feedstock and Its Usage in Compression Ignition Engine: A Comprehensive Review10.1016/j.matpr.2020.03.205 ↗
22. Mannu, A., Garroni, S., Ibanez Porras, J., and Mele, A. (2020). Available Technologies and Materials for Waste Cooking Oil Recycling. Processes, 8.10.3390/pr8030366 ↗
23. Aguado-Deblas, L., López-Tenllado, F.J., Luna, D., Bautista, F.M., Romero, A.A., and Estevez, R. (2022). Advanced Biofuels from ABE (Acetone/Butanol/Ethanol) and Vegetable Oils (Castor or Sunflower Oil) for Using in Triple Blends with Diesel: Evaluation on a Diesel Engine. Materials, 15.10.3390/ma15186493 ↗
24. Production Routes of Advanced Renewable C1 to C4 Alcohols as Biofuel Components—A Review10.1002/bbb.2109 ↗
25. Investigation of Performance and Emission Characteristics of an CI Engine Fuelled with Diesel–Waste Tire Oil–Butanol Blends10.1016/j.fuel.2020.118872 ↗
26. Estevez, R., Aguado-Deblas, L., López-Tenllado, F.J., Bautista, F.M., Romero, A.A., and Luna, D. (2024). Study on the Performance and Emissions of Triple Blends of Diesel/Waste Plastic Oil/Vegetable Oil in a Diesel Engine: Advancing Eco-Friendly Solutions. Energies, 17.10.3390/en17061322 ↗
27. The Effect of Diesel Fuel-Tall Oil/Ethanol/Methanol/Isopropyl/n-Butanol/Fusel Oil Mixtures on Engine Performance and Exhaust Emissions10.1016/j.fuel.2020.118671 ↗
28. Experimental Study on Emissions and Particulate Characteristics of Diesel Engine Fueled with Plastic Waste Oil, Acetone-Butanol-Ethanol and Diesel Blends10.1016/j.psep.2024.09.060 ↗
29. Čedík, J., Pexa, M., Holúbek, M., Aleš, Z., Pražan, R., and Kuchar, P. (2020). Effect of Diesel Fuel-Coconut Oil-Butanol Blends on Operational Parameters of Diesel Engine. Energies, 13.10.3390/en13153796 ↗
30. Experimental Investigation of Features of CI Engine Fueled with Blends of Camphor Oil with Biomass Waste Simarouba Glauca Oil
31. Sonthalia, A., Varuvel, E.G., Subramanian, T., and Kumar, N. (2024). NOx Emission Reduction in Low Viscous Low Cetane (LVLC) Fuel Using Additives in CI Engine: An Experimental Study. Clean. Technol. Environ. Policy.10.1007/s10098-024-02849-4 ↗
32. Statistical Investigation of Combustion and Emission Characteristics of Biofuels According to Their Physical Properties: A Way to Explore Suitable Alternative Fuels10.1016/j.fuel.2023.130242 ↗
33. Effects of 2-Ethylhexyl Nitrate and Post-Injection Strategy on Combustion and Emission Characterizes in a Dimethyl Carbonate/Diesel Blending Engine10.1016/j.fuel.2019.116687 ↗
34. Investigation of the Effects of Biodiesel/2-Ethylhexyl Nitrate (EHN) Fuel Blends on Diesel Engine Performance and Emissions by Response Surface Methodology (RSM)10.1016/j.fuel.2020.118005 ↗
35. Diesel Engine Combustion and Emissions of 2,5-Dimethylfuran-Diesel Blends with 2-Ethylhexyl Nitrate Addition10.1016/j.fuel.2013.04.009 ↗
36. Effect of Adding 2-Ethylhexyl Nitrate Cetane Improver on the Autoignition Properties of Ethanol–Diesel Fuel Blend—Investigation at Various Ambient Gas Temperatures10.1016/j.fuel.2018.03.084 ↗
37. Effect of EGR Dilution on Combustion, Performance and Emission Characteristics of a Diesel Engine Fueled with n-Pentanol and 2-Ethylhexyl Nitrate Additive10.1016/j.enconman.2018.09.035 ↗
38. The Effect of 2-Ethyl-Hexyl Nitrate on HCCI Combustion Properties to Compensate Ethanol Addition to Gasoline10.1016/j.fuel.2020.117569 ↗
39. Effects of Cetane Number Improvers on the Performance of Diesel Engine Fuelled with Methanol/Biodiesel Blend10.1016/j.fuel.2014.03.011 ↗
40. A Comparative Evaluation of Cetane Enhancing Techniques for Improving the Smoke, NOx and BSFC Trade-off in an Automotive Diesel Engine10.1016/j.fuel.2020.119918 ↗
41. Use of Yellow Oleander (Thevetia Peruviana) Seed Oil Biodiesel as Cetane and Lubricity Improver for Petrodiesel10.31788/RJC.2019.1235293 ↗
42. Effects of a Cetane Improver on Fuel Properties and Engine Characteristics of a Diesel Engine Fueled with the Blends of Diesel, Hazelnut Oil and Higher Carbon Alcohol10.1016/j.fuel.2016.01.013 ↗
43. Fast Determination of 2-Ethylhexyl Nitrate Diesel/Biodiesel Blends by Distillation Curves and Chemometrics10.1021/acs.energyfuels.5b02995 ↗
44. Review and Evaluation of Sustainable Ammonia Production, Storage and Utilization10.1016/j.enconman.2023.117869 ↗
45. Reducing Diesel Exhaust Emissions by Optimisation of Alcohol Oxygenates Blend with Diesel/Biodiesel10.1016/j.jclepro.2021.128090 ↗
46. Biofuel Certification Performance: A Review & Analysis10.29333/ejosdr/7864 ↗
47. Influence of Composition of Fatty Acid Methyl Esters on Smoke Opacity and Amount of Polycyclic Aromatic Hydrocarbons in Engine Emissions
48. Analysis of Combustion and Emissions Characteristics of a DI Diesel Engine Fuelled with Diesel/Biodiesel/Glycerol Tert-Butyl Ethers Mixture by Altering Compression Ratio and Injection Timing10.1016/j.fuel.2022.123200 ↗
49. Energy, Environmental and Economic Assessment of Waste-Derived Lemon Peel Oil Intermingled with High Intense Water and Cetane Improver