Orbital - Vol. 11 No. 6 - Special Issue November 2019
FULL PAPERS

Evaluation of the Drying Kinetics of the Cake from Linseed Oil Extraction

Casi Santos dos Santos
Universidade Tecnológica Federal do Paraná
Amanda Heloize Rolim
Universidade Tecnológica Federal do Paraná
Eliza Taborda Afonso
Universidade Tecnológica Federal do Paraná
Marina Raquel Bento de Camargo
Universidade Tecnológica Federal do Paraná
Rebeca Becker Miranda
Universidade Tecnológica Federal do Paraná
Gracielle Johann
Universidade Tecnológica Federal do Paraná
Paula Fernandes Montanher
Universidade Tecnológica Federal do Paraná
Published December 16, 2019
Keywords
  • mathematical modeling,
  • by-products,
  • equilibrium moisture,
  • water activity
How to Cite
(1)
dos Santos, C. S.; Rolim, A. H.; Afonso, E. T.; de Camargo, M. R. B.; Miranda, R. B.; Johann, G.; Montanher, P. F. Evaluation of the Drying Kinetics of the Cake from Linseed Oil Extraction. Orbital: Electron. J. Chem. 2019, 11, 355-360.

Abstract

Considering that drying is one of the oldest unit operations, and widely used in the preservation of biological products, the present study evaluated the drying kinetics of the cake obtained from linseed oil extraction. The samples were submitted to forced air circulation drying oven under temperatures of 40, 50, 60, 70 and 80 ± 1 °C. Simplified mathematical models were adjusted (Verna, Page, Newton, Henderson and Pabis, Two terms and Modified Page) to describe the drying kinetics of the by-product. It was observed that the drying time was dependent on both temperature and relative humidity of the drying air. The ‘Two Terms’ model was the best fit to the experimental temperature data measured, with highest range of coefficient of determination (0.97-0.99) and smaller range of root-mean-square error (between 1.96x10-4 and 5.69x10-4). The standard error of prediction ranged from 1.86x10-2 to 7.94x10-2 and the average of relative standard deviation was the lowest observed (14.97). Thus, from the experimental data and adjusted parameters from the ‘Two Terms’ model, it is possible to predict the drying behavior in the temperature range studied.

DOI: http://dx.doi.org/10.17807/orbital.v11i6.1247