Corn,Rice, and Wheat Seed Drying by Two-Stage Concept |
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Authors: | Weerachet Jittanit Robert Driscoll |
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Affiliation: | School of Chemical Engineering, The University of New South Wales , Sydney, New South Wales, Australia |
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Abstract: | Corn, rice, and wheat seeds with an initial moisture content (IMC) of 20–25% wb were dried to moisture content below 18% wb at 40–80°C in a fluidized bed dryer (FBD) and spouted bed dryer (SBD) and the seeds with IMC 18% wb were dried to below 14% wb at air temperatures 18–30°C and relative humidity 60–70% by an in-store dryer (ISD). As a result, it appears that a two-stage drying concept is feasible in drying high-moisture-content seeds due to the high germination rate of dried seeds. Nonetheless, the drying temperature must be carefully selected. A drying temperature of 40°C was clearly safe for all samples, whereas more than 90% of wheat seeds still germinated after drying at 60°C in FBD. Furthermore, drying seeds with IMC 18% wb by ISD was safe under specified drying conditions. |
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Keywords: | Fluidized bed dryer In-store dryer Seed drying Spouted bed dryer Two-stage drying |
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