Factorial design and surface method to optimization ethylic biodiesel production from chicken wastes

Abstract

To produce biodiesel, one of the most important factors is the quality of the oil used in the production. However, other factors such as price and availability should also be taken into consideration. Chicken wastes oil shows a very promising option for this sector, since it comes from a waste. The aim of the present study was a methodology for extraction and characterization of chicken wastes oil for production of biodiesel by ethylic transesterification, besides presenting the characterization and optimization of the process variable of the production of biodiesel the applying RSM involving CCD. The investigation was performed following characterization parameters for the oil were evaluated: viscosity, density, acidity index, moisture of the sample, refractive index, and saponification index. For biodiesel were evaluated viscosity, density, acidity index and ester content. An optimum point was reached for the production of chicken biodiesel where the concentration of the catalyst is 2.1% by mass, the oil/ethanol ratio is 1:5,5 and the reaction temperature of 30 ?C, at that point was achieved a 95% conversion. At the optimum point obtained from the statistical technique for a p-value of 0,05 the results found for the physical-chemical characterization of biodiesel are found in the ANP standards.