Kirby Christian C. Micayabas^1,, Deckson R. Tingalan¹, Kingman N. Pacturan¹, Dave Joaquin B. Singgil¹, Ian Jay P. Saldo¹, Rolando Y. Casas¹, Mary Jade Peñafiel-Dandoy¹

Biodiesel is a renewable and sustainable fuel generated from a variety of feedstocks, including soybean oil, canola oil, and used motor oil. It has been widely acknowledged as a promising alternative to diesel fuel derived from petroleum because of its lower greenhouse gas emissions and environmental impact. In addition, blending various varieties of biodiesel can improve fuel properties, including these physical and chemical properties. This study compared through a thorough evaluation and assessment of the different properties of mixed biodiesel and commercial diesel. It was compared in terms of physical properties: viscosity and density, and chemical properties: pH level, corrosion test, and amount of particle matter determined using gravimetric testing. The study used research and development with a quantitative design focused on the experimental approach. Results revealed that the viscosity values of the mixed biodiesel had an overall mean of 5.68, while commercial diesel had a value of 4.56. For the density, the Mixed Biodiesel attained an overall mean of 0.843 while the commercial diesel yielded 0.83. Furthermore, in their pH level testing, the Mixed Biodiesel yielded an overall value of 8.80, while the commercial diesel got an overall mean of 9.46. For their corrosion test, the three samples of mixed biodiesel passed the ASTM D130 rating in which it garnered the degree of 1b (Slight tarnish), while the commercial diesel garnered 1a, which is still in the classification of Slight tarnish. In addition, for the particle matter, the mixed biodiesel yielded an overall mean of 1.801, while the commercial diesel only had 0.636. T-tests revealed that there were no significant difference on the physical and chemical properties of mixed biodiesel and commercial diesel. Further studies regarding the different physical and chemical properties are recommended for future contribution to the body of knowledge.

canola oil, chemical properties, commercial diesel, gravimetric testing, mixed biodiesel, particle matter physical properties, used engine oil