INTEMA   05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Agro-industrial Wastes: Drying Kinetics
Autor/es:
CINTIA S. NAVAS; D. GRANADOS; M.M. REBOREDO
Lugar:
Tinos
Reunión:
Conferencia; 3rd International Conference on Sustainable Solid Waste Management; 2015
Resumen:
The productive activities of Argentina, olive and wine industries, generate large amounts of agro-industrial waste which include the olive wet husk, the olive pits and grape stalks. These residues can be used as filler of polymeric composite materials. In order to prepare the residues for that use, a drying process is needed. In this work the drying kinetics of agro-industrial waste was studied. It was carried out at three different temperatures: 60, 80 and 100 °C, for each material. The experimental results determined that the olive pit is the material which has higher moisture value (62%), followed by the grape stalks(45%)and finally by the olive wet husk(33%). Six empirical mathematical models were selected to describe and compare the drying kinetics of the agro-industrial wastes. Among the tested models used to describe the drying kinetics of wastes, Logarithmic and Page models were those that presented the best fit. The moisture loss was described and the effective diffusivity was estimated on the basis of the obtained results, giving values in the range of 5x10-6 for the grape stalks, 4.09x10-7 for the olive wet husk and 5x10-6 m2/s for the olive pits. This study suggests that the olive wet husk shows better properties during drying process, followed by grape stalks and the olive pits, for their incorporation into polymeric composites.