Influence of drying conditions on the moisture diffusion during single stage and two stage fluidized bed drying of bovine intestine for pet food

Alves-Filho, Odilio, Senadeera, Wijitha, & Eikevik, Trygve (2013) Influence of drying conditions on the moisture diffusion during single stage and two stage fluidized bed drying of bovine intestine for pet food. In Goncharova-Alves, S., Alves-Filho, O., & Eikevik, T. (Eds.) Proceedings of the 6th Nordic Drying Conference (NDC2013), Danish Technological Institute and NTNU Trondheim (Norwegian University of Science and Technology), Danish Technological Institute, Copenhagen.

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Abstract

Bovine intestine samples were heat pump fluidized bed dried at atmospheric pressure and at temperatures below and above the material freezing points equipped with a continuous monitoring system. The investigation of the drying characteristics has been conducted in the temperature range -10~25oC and the airflow in the range 1.5~2.5 m/s. Some experiments were conducted as a single temperature drying experiments and others as two stage drying experiments employing two temperatures. An Arrhenius-type equation was used to interpret the influence of the drying air parameters on the effective diffusivity, calculated with the method of slopes in terms of energy activation, and this was found to be sensitivity of the temperature. The effective diffusion coefficient of moisture transfer was determined by Fickian method using uni-dimensional moisture movement in both moisture, removal by evaporation and combined sublimation and evaporation. Correlations expressing the effective moisture diffusivity and drying temperature are reported.

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3 citations in Web of Science®
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ID Code: 60976
Item Type: Conference Paper
Refereed: Yes
Keywords: bovine intestine, diffusion, intermittent drying, kinetics
ISBN: 9788292739068
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > FOOD SCIENCES (090800) > Food Engineering (090802)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 [please consult the author]
Deposited On: 27 Jun 2013 22:31
Last Modified: 03 Apr 2014 18:27

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