INVESTIGADORES
QUERINI carlos Alberto
artículos
Título:
Biodiesel production by two-stage transesterification with ethanol
Autor/es:
MENDOW, G.; VEIZAGA,N.S.; SÁNCHEZ, B.S.; QUERINI, C.A.
Revista:
BIORESOURCE TECHNOLOGY
Editorial:
ELSEVIER SCI LTD
Referencias:
Lugar: Amsterdam; Año: 2011 vol. 102 p. 10407 - 10413
ISSN:
0960-8524
Resumen:
A two-stage process consisting of two reactions steps with glycerin separation and ethanol/catalyst addition
in each of them was optimized for ethyl esters production. The optimal reaction temperature was
55 C. At an ethanol/oil molar ratio of 4.25:1 (25% v/v alcohol with respect to oil), a 99% conversion value
was obtained with low ethanol consumption. In contrast to methoxide catalysts, sodium and potassium
hydroxide catalysts severely complicate the purification since no phase separation took place under most
conditions. With a total sodium methoxide concentration of 1.06 g catalyst/100 g oil, and adding 50% of
the catalyst in each reaction step, biodiesel with a total glycerin content of 0.172% was obtained. The optimal
conditions found in this study make it possible to use the same industrial facility to produce either
methyl or ethyl esters.