Drying of Foamed Biological Materials: Opportunities and Challenges |
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Authors: | C. Ratti T. Kudra |
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Affiliation: | a Department of Soils and Agri-Food Engineering, Laval University, Quebec, PQ, Canadab Canmet Energy Technology Centre—Varennes, Varennes, PQ, Canada |
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Abstract: | An overview is provided on hot air drying of foamed materials in a thin layer (foam-mat drying), foam-spray drying, microwave-assisted drying of liquid foams, as well as microwave drying of frozen foams with and without dielectric solid inserts, used as complementary heat sources. In particular, the mechanisms of heat and moisture transport during the drying of foams are identified. The effects of foam characteristics (e.g., foam density and stability) and drying conditions (temperature, air velocity) on drying kinetics and product quality are examined, and the differences between the drying of non-foamed and foamed materials are discussed. |
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Keywords: | Dielectric material Drying kinetics Foam-mat drying Freeze drying Microwave drying Spray drying |
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