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Theoretical framework: A biodiesel fuel is made from long-chain fatty acids derived from vegetable oil or animal fat. Similarities between physical-chemical characteristics of diesel and biodiesel make their mixture feasible. Environmental benefits achieved by using biofuels to drive machines has increased their contribution in energetic matrixes. Objective: The aim of this research is to produce soybean and sunflower biodiesel in the laboratory using a transesterification reaction and to examine the biodiesel specifications for utilization in compression ignition engines. Method: The physical-chemical properties of the biodiesel measured in the present work are density, viscosity, cetane index, flash point, pour point, and cloud point. Results and conclusion: For soybean and sunflower biodiesel, density (867 kg/m³, 860 kg/m³), viscosity (5.29 mm²/s, 5.30 mm²/s), Centane index (53.88, 55.66), flash point (187°C and 135.6°C) are reported respectively. Regarding the pour point, cloud point, were only determined for sunflower biodiesel, respectively, -2°C and 13°C. The results indicate that these properties, density, kinematic viscosity, flash point, as determined from the soybean and sunflower biodiesel are within the limits established by The Brazilian National Agency of Petroleum, Natural Gas and Biofuels, Resolution No. 45 of the ANP of 08/25/2014 – DOU 08/26/2014. These values are, respectively, 850-900 kg/m³, 3-6 mm²/s, at least 100°C.The produced biodiesel presented behavior similar to diesel S10 proving its viability of use. Research implications: As a result of such thorough research, we are able to compare many characteristics of soybean and sunflower biodiesel with commercial diesel S10. This research is critical to the performance evaluation of a compression ignition engine and the potential reduction in greenhouse gas emissions associated with conventional diesel.
Theoretical framework: A biodiesel fuel is made from long-chain fatty acids derived from vegetable oil or animal fat. Similarities between physical-chemical characteristics of diesel and biodiesel make their mixture feasible. Environmental benefits achieved by using biofuels to drive machines has increased their contribution in energetic matrixes. Objective: The aim of this research is to produce soybean and sunflower biodiesel in the laboratory using a transesterification reaction and to examine the biodiesel specifications for utilization in compression ignition engines. Method: The physical-chemical properties of the biodiesel measured in the present work are density, viscosity, cetane index, flash point, pour point, and cloud point. Results and conclusion: For soybean and sunflower biodiesel, density (867 kg/m³, 860 kg/m³), viscosity (5.29 mm²/s, 5.30 mm²/s), Centane index (53.88, 55.66), flash point (187°C and 135.6°C) are reported respectively. Regarding the pour point, cloud point, were only determined for sunflower biodiesel, respectively, -2°C and 13°C. The results indicate that these properties, density, kinematic viscosity, flash point, as determined from the soybean and sunflower biodiesel are within the limits established by The Brazilian National Agency of Petroleum, Natural Gas and Biofuels, Resolution No. 45 of the ANP of 08/25/2014 – DOU 08/26/2014. These values are, respectively, 850-900 kg/m³, 3-6 mm²/s, at least 100°C.The produced biodiesel presented behavior similar to diesel S10 proving its viability of use. Research implications: As a result of such thorough research, we are able to compare many characteristics of soybean and sunflower biodiesel with commercial diesel S10. This research is critical to the performance evaluation of a compression ignition engine and the potential reduction in greenhouse gas emissions associated with conventional diesel.
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