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A study on the accuracy and precision of external mass transfer and diffusion c...
Azevedo, I.C.A.; Oliveira, F.A.R.; Drumond, M.C.Optimal experimental designs for maximum precision in the estimation of diffusivities (D) and mass transfer coefficients (Kc) for solute transport from/to a solid immersed in a fluid were determined. Diffusion in the solid was considered to take place according to Fick's second law. It was found that the optimal design was dependent on the Biot number. In the range of Biot numbers tested (0.1±200), the first sa...
A study on the accuracy and precision of external mass transfer and diffusion c...
Abreu, Isabel; Oliveira, F. A. R.; Drumond, M. C.Optimal experimental designs for maximum precision in the estimation of diffusivities (D) and mass transfer coefficients (Kc) for solute transport from/to a solid immersed in a fluid were determined. Diffusion in the solid was considered to take place according to Fick's second law. It was found that the optimal design was dependent on the Biot number. In the range of Biot numbers tested (0.1±200), the first sa...
Modelling of dissolved oxygen concentration during storage of packaged liquid d...
Ahrné, L. M.; Oliveira, F. A. R.; Manso, M. C.; Drumond, M. C.; Osted, R.; Gekas, V.A mathematical model that combines oxygen uptake from the outside environment with oxygen consumption by oxidative reactions, in a liquid packed food during storage, was developed. The model was applied to orange juice aseptically packaged in Tetra Brik Aseptic cartons, during storage of up to 5 months at 4, 8, 20, 30, 40 and 50 °C. The parameters of the model, the oxygen mass transfer coefficient and the rate ...
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