Resumo

CORDOVI-FELIPE, Carlos Miguel; FERRER-HERNANDEZ, Anselmo Enrique  e  TEIXEIRA-MILITAO, Julio Sancho Linhares. Pretreatments of residual cooking fats for biodiesel production. Ingeniería Mecánica [online]. 2017, vol.20, n.2, pp.58-64. ISSN 1815-5944.

It was studied the pre-treatment of residual fat cooking food of high acidity index in order to use it as raw material in the production of biodiesel. Three methods were studied for pre-treatment of fat: esterification of free fatty acids, neutralization of free fatty acids and excess catalyst in transesterification reaction. In biodiesel production, alkaline transesterification reaction was used with anhydrous ethanol as the reagent and NaOH as catalyst. As a conclusion, the biofuel was produced from the fats treated by the three methods studied; the presence of the ethyl esters characteristic of the biodiesel was verified by gas chromatography.

Palavras-chave : ovens fatty residual; pretreatment of fats; esterification; neutralization; biodiesel.

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