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Physical-chemical properties of waste cooking oil biodiesel and castor oil biodiesel blends |
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| Authors: | Osmano Souza Valente Vanya Márcia Duarte Pasa Carlos Rodrigues Pereira Belchior José Ricardo Sodré |
| Affiliation: | a Pontifical Catholic University of Minas Gerais, Department of Mechanical Engineering, Av. Dom José Gaspar, 500, CEP 30535-610, Belo Horizonte, MG, Brazil b Federal University of Minas Gerais, Department of Chemistry, Av. Antônio Carlos, 6627, CEP 31270-901, Belo Horizonte, MG, Brazil c Federal University of Rio de Janeiro, Department of Mechanical Engineering, Cidade Universitária, P.O. Box 68503, CEP 22245-110, Rio de Janeiro, RJ, Brazil |
| Abstract: | This work presents the physical-chemical properties of fuel blends of waste cooking oil biodiesel or castor oil biodiesel with diesel oil. The properties evaluated were fuel density, kinematic viscosity, cetane index, distillation temperatures, and sulfur content, measured according to standard test methods. The results were analyzed based on present specifications for biodiesel fuel in Brazil, Europe, and USA. Fuel density and viscosity were increased with increasing biodiesel concentration, while fuel sulfur content was reduced. Cetane index is decreased with high biodiesel content in diesel oil. The biodiesel blends distillation temperatures T10 and T50 are higher than those of diesel oil, while the distillation temperature T90 is lower. A brief discussion on the possible effects of fuel property variation with biodiesel concentration on engine performance and exhaust emissions is presented. The maximum biodiesel concentration in diesel oil that meets the required characteristics for internal combustion engine application is evaluated, based on the results obtained. |
| Keywords: | Biodiesel Waste cooking oil Castor oil Properties Biofuels |
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