INCAPE   05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
Biodiesel production from non-degummed vegetable oils: Phosphorus balance
Autor/es:
MENDOW, G.; MONELLA, F.C.; PISARELLO, M.L.; QUERINI, C.A.
Revista:
FUEL PROCESSING TECHNOLOGY
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2011 vol. 92 p. 864 - 870
ISSN:
0378-3820
Resumen:
In this work, the biodiesel production process using high-phosphorous content raw materials is studied. The
objective is to determine the phosphorous mass balances, in order to determine the amount of this element
in each stream of an integrated process including esterification, transesterification, and glycerin purification.
It was found that up to 97% of the initial phosphorous content in the oil is accumulated in the glycerin phase.
The small amount of phosphorous left in the biodiesel phase after decantation is eliminated during the acid
extraction carried out to purify the biodiesel. The evaporation of methanol after the reaction plays a major
role in the quantity of phosphorous and soaps left in the biodiesel phase. For example, with a crude soybean
oil containing 226 ppm of phosphorous, the methanol content at the end of the reaction in the biodiesel
phase is 4.6 wt.%, being the phosphorous content 7.1 ppm, and the soap concentration 3.89 g/kg. The
methanol was evaporated in such a way that its concentration dropped to 0.35 wt.%, and the phosphorous
and soaps concentrations decreased to 4 ppm and 0.7 g/kg respectively. This has a direct impact in the
quality of the final biodiesel. During the esterification, also an important amount of phosphorous is
eliminated from the biodiesel phase.fication, transesterification, and glycerin purification.
It was found that up to 97% of the initial phosphorous content in the oil is accumulated in the glycerin phase.
The small amount of phosphorous left in the biodiesel phase after decantation is eliminated during the acid
extraction carried out to purify the biodiesel. The evaporation of methanol after the reaction plays a major
role in the quantity of phosphorous and soaps left in the biodiesel phase. For example, with a crude soybean
oil containing 226 ppm of phosphorous, the methanol content at the end of the reaction in the biodiesel
phase is 4.6 wt.%, being the phosphorous content 7.1 ppm, and the soap concentration 3.89 g/kg. The
methanol was evaporated in such a way that its concentration dropped to 0.35 wt.%, and the phosphorous
and soaps concentrations decreased to 4 ppm and 0.7 g/kg respectively. This has a direct impact in the
quality of the final biodiesel. During the esterification, also an important amount of phosphorous is
eliminated from the biodiesel phase.final biodiesel. During the esterification, also an important amount of phosphorous is
eliminated from the biodiesel phase.