Mass Transfer Parameters and Modeling of Hot Air Drying Kinetics of Dill Leaves.

Autor: Darvishi, Hosain, Farhudi, Zanyar, Behroozi-Khazaei, Nasser
Předmět:
Zdroj: Chemical Product & Process Modeling; Jun2017, Vol. 12 Issue 2, p-1, 15p
Abstrakt: Moisture diffusivity (Dem), mass transfer coefficient (hm), activation energy and drying kinetics of the dill leaves were studied and modeled as a function of temperature (40-70 °C) and moisture content (0.20-5.67 kg water/kg dry matter). Results showed that the Dem and hm significantly depend on the temperature and moisture content ( p < 0.05). The average of Dem and hm varied between 4.02 × 10-9 to 9.65 × 10-9 m2/s, and 2.38 × 10-7 to 6.33 × 10-7 m/s, respectively. Activation energy showed a significant dependence on the moisture content and estimated as 16.84 kJ/mol for diffusion model and 28.70 kJ/mol for mass transfer model. Out of the six models considered, the logarithmic model showed the best fit to drying behavior of the dill leaves. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index