Sunday, May 4, 2008
4-49

Kinetics of castor and waste cooking oils ethanolysis for biodiesel production

Nívea De Lima da Silva, Elmer Ccopa Rivera, Danilo Ribeiro de Lima, César Benedito Batistella, Rubens Maciel Filho, and Maria Regina Wolf Maciel. Department of Chemical Process – School of Chemical Engineering, State University of Campinas, Cidade Universitária, Campinas, 13083970, Brazil

This work presents the transesterification process of castor and waste cooking oils with bioethanol in the presence of sodium hydroxide as catalyst, because it leads to better conversion and smaller reaction time. A computer-aided tool of this system to model the kinetic of biodiesel production was developed to explore the impact of each strategy on the process behaviour which is an important issue to lead the process to be operated at high level of performance. An analysis was made of the temperature effects on the reaction rates, and it was determined the reaction rate constants and the activation energies derived from experimental observation. The kinetic data showed to be satisfactory for a wide range of operating conditions. The assessment of possible implementation difficulties are carefully considered and discussed.

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