Experimental determination of the data kinetics of transesterification reaction of vegetable oils / Determinação experimental dos dados cineticos da reação de transesterificação de oleos vegetais
AUTOR(ES)
Julian Alfredo Gonzalez Garnica
DATA DE PUBLICAÇÃO
2009
RESUMO
The general objective of this study was to contribute with the biodiesel production. More specifically, the purpose is to obtain experimental parameters kinetics of transesterification reaction for alcoholysis reaction of various vegetable oils produced in Brazil, such as palm oil, waste frying, coconut oil, soybean oil and castor oil, being employed various types of catalysts as sodium hydroxide, potassium hydroxide, guanidine and sodium ethoxide. To obtain the kinetic parameters, the experimental design and the methodology for analyzing the response surface were used, in order to optimized the different reaction conditions, reaction temperature, ratio ethanol / oil,% w / w catalyst, level of agitation and reaction time. Taking into account the results obtained in a variety of experiments planning, some kinetic parameters of alcoholysis reaction of vegetable oils, such as rate constants at different reaction temperature and the overall activation energy of the reaction were determined. Among the results were achieved after the optimized reaction conditions, conversions over 95% with almost all oils, the global activation energies were obtained for global palm oil Ea = 6361 cal/mol, for oil coconut Ea = 1815.6 cal/mol, for soybean oil Ea = 5431.75 cal/mol and for wasted oil Ea=7812,36 cal/mol.
ASSUNTO(S)
vegetable oils planejamento de experimentos experimental design biodiesel oleos vegetais cinetica kinetics
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=000471038Documentos Relacionados
- Study of mechanical expeller and ethanolic transesterification of vegetable oils
- Avaliação dos principios fitosterois em oleos vegetais e azeite
- Experimental determination of vapor-liquid equilibrium data of binary mixtures of fatty acids through Differential Scanning Calorimetry
- Determinação experimental da viscosidade e condutividade térmica de óleos vegetais
- Novos catalizadores para transesterificação de oleos vegetais