Abstract
AbstractThe transesterification of vegetable oils (rapeseed and sunflower oils were used) by low‐molecular alcohol is the most‐used method of biodiesel production. A heterogeneous reaction mixture is formed by transesterification, containing ester and glycerol phases. Biodiesel is gained by the sedimentation of this mixture. We have studied how the separation conditions (independent variables: amount of added water, intensity and time of stirring, etc.) affect the quantity and the quality of both phases (dependent variables). The reaction mixture presents a multivariable system; therefore, the statistical method Plackett–Burman was used for planning the experiments. Multidimensional linear regression was used for the description of the relation between independent and dependent variables. A mathematical model describing this relationship was created for both types of oil.
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