With the full growth of
energy needs in the world, several studies are now focused on finding renewable
sources. The aim of this work is to optimise biofuel formulation from a mixture design by studying physical
properties, such as specific gravity and kinematic viscosity of various formulated
mixtures. Optimization from the mixture plan
revealed that in the chosen experimental domain, the optimal conditions are:
40% for used frying oil (UFO), 50% for bioethanol and 10% for diesel.
These experimental conditions lead to a biofuel with a density of 0.84 and a
kinematic viscosity of 2.97 cSt. These parameters are compliant with the diesel
quality certificate in tropical areas. These density and viscosity values were
determined according to respective desirability values of 0.68 and 0.75.
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