INVESTIGADORES
HEGEL Pablo Ezequiel
congresos y reuniones científicas
Título:
Recovery of fatty acids from soy wet sludge
Autor/es:
G. SOTO; A. VELEZ; P. HEGEL; G. MABE; S. PEREDA
Lugar:
Puerto Varas
Reunión:
Conferencia; IX Iberoamerican Conference on Phase Equilibria and Fluid Properties for Process Design; 2012
Institución organizadora:
Universidad de ConcepciĆ³n
Resumen:
In the last decade the production of soybean and sunflower oil has greatly increased worldwide. Together with it, the market of the oil refining by-products, phospholipids sludge (wet gum) and distillates of the deodorizer (DDEO), is rapidly changing. Particularly, the lecithin content of soy oil is quite high; therefore, large volumes of sludge are being produced. This sludge contains approximately 25% oil and 25% of lecithin. Since it also has almost 50% water, its nutritional value for animal fed is low if used without further processing. In this work we propose to perform the direct hydrolysis of phospholipids and oil enclosed in the wet gum. A series of experiments was performed to determine the effect of temperature (523 K to 563 K) and water to lipids mass ratio (7 to 24 m/m). In all the studies a complete conversion of lipids was observed. After the separation of solid substrate and volatile compounds, the reaction products soluble in hexane (upper 70 wt.% of the initial lipids) have a concentration of fatty acids greater than 50 wt%.