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Diffusional analysis of air drying of grain sorghum
Author(s) -
SUAREZ C.,
VIOLLAZ P.,
CHIRIFE J.
Publication year - 1980
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/j.1365-2621.1980.tb00971.x
Subject(s) - activation energy , moisture , thermal diffusivity , diffusion , arrhenius equation , water content , sorghum , materials science , thermodynamics , effective diffusion coefficient , arrhenius plot , flux (metallurgy) , composite material , chemistry , agronomy , metallurgy , physics , geotechnical engineering , geology , medicine , radiology , biology , magnetic resonance imaging
Summary Pick's law of diffusion (moisture flux proportional to the moisture gradient) for diffusion out of spheres was successfully applied to describe the drying of grain sorghum. It was found that the diffusion coefficient of water was independent of moisture content in the approximate range of 21–6% (dry basis) moisture content. An Arrhenius type temperature dependency of moisture diffusivity was found, the energy of activation being 7.5 kcal/g mol.

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