A diffusion model with a moisture dependent diffusion coefficient for parboiled rice

A mathematical model describing moisture migration by diffusion in a solid sphere with variable diffusion coefficient is proposed. An analytical expression for dependence of the diffusion coefficient with moisture content was derived based on the assumption that the activation energy for diffusion v...

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Detalles Bibliográficos
Autores principales:	Tolaba, Marcela Patricia, Aguerre, Roberto Jorge
Publicado:	2001
Materias:	Activation energy Biot number Drying Heat of desorption Modeling Thin layer drying Variable diffusivity Crops Desorption Diffusion Mathematical models Moisture Temperature distribution Solid spheres diffusion food industry mathematical modeling moisture
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07373937_v19_n1_p155_Elbert http://hdl.handle.net/20.500.12110/paper_07373937_v19_n1_p155_Elbert
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_07373937_v19_n1_p155_Elbert
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spelling	paper:paper_07373937_v19_n1_p155_Elbert2023-06-08T15:44:16Z A diffusion model with a moisture dependent diffusion coefficient for parboiled rice Tolaba, Marcela Patricia Aguerre, Roberto Jorge Activation energy Biot number Drying Heat of desorption Modeling Thin layer drying Variable diffusivity Activation energy Crops Desorption Diffusion Mathematical models Moisture Temperature distribution Solid spheres Drying diffusion food industry mathematical modeling moisture A mathematical model describing moisture migration by diffusion in a solid sphere with variable diffusion coefficient is proposed. An analytical expression for dependence of the diffusion coefficient with moisture content was derived based on the assumption that the activation energy for diffusion varies linearly with the desorption energy. The expression for moisture dependence of diffusion coefficient was used to simulate drying of parboiled rice in the temperature range 50-90°C. The mathematical model shows good agreement between observed and predicted drying rate curves. Fil:Tolaba, M.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Aguerre, R.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2001 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07373937_v19_n1_p155_Elbert http://hdl.handle.net/20.500.12110/paper_07373937_v19_n1_p155_Elbert
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Activation energy Biot number Drying Heat of desorption Modeling Thin layer drying Variable diffusivity Activation energy Crops Desorption Diffusion Mathematical models Moisture Temperature distribution Solid spheres Drying diffusion food industry mathematical modeling moisture
spellingShingle	Activation energy Biot number Drying Heat of desorption Modeling Thin layer drying Variable diffusivity Activation energy Crops Desorption Diffusion Mathematical models Moisture Temperature distribution Solid spheres Drying diffusion food industry mathematical modeling moisture Tolaba, Marcela Patricia Aguerre, Roberto Jorge A diffusion model with a moisture dependent diffusion coefficient for parboiled rice
topic_facet	Activation energy Biot number Drying Heat of desorption Modeling Thin layer drying Variable diffusivity Activation energy Crops Desorption Diffusion Mathematical models Moisture Temperature distribution Solid spheres Drying diffusion food industry mathematical modeling moisture
description	A mathematical model describing moisture migration by diffusion in a solid sphere with variable diffusion coefficient is proposed. An analytical expression for dependence of the diffusion coefficient with moisture content was derived based on the assumption that the activation energy for diffusion varies linearly with the desorption energy. The expression for moisture dependence of diffusion coefficient was used to simulate drying of parboiled rice in the temperature range 50-90°C. The mathematical model shows good agreement between observed and predicted drying rate curves.
author	Tolaba, Marcela Patricia Aguerre, Roberto Jorge
author_facet	Tolaba, Marcela Patricia Aguerre, Roberto Jorge
author_sort	Tolaba, Marcela Patricia
title	A diffusion model with a moisture dependent diffusion coefficient for parboiled rice
title_short	A diffusion model with a moisture dependent diffusion coefficient for parboiled rice
title_full	A diffusion model with a moisture dependent diffusion coefficient for parboiled rice
title_fullStr	A diffusion model with a moisture dependent diffusion coefficient for parboiled rice
title_full_unstemmed	A diffusion model with a moisture dependent diffusion coefficient for parboiled rice
title_sort	diffusion model with a moisture dependent diffusion coefficient for parboiled rice
publishDate	2001
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07373937_v19_n1_p155_Elbert http://hdl.handle.net/20.500.12110/paper_07373937_v19_n1_p155_Elbert
work_keys_str_mv	AT tolabamarcelapatricia adiffusionmodelwithamoisturedependentdiffusioncoefficientforparboiledrice AT aguerrerobertojorge adiffusionmodelwithamoisturedependentdiffusioncoefficientforparboiledrice AT tolabamarcelapatricia diffusionmodelwithamoisturedependentdiffusioncoefficientforparboiledrice AT aguerrerobertojorge diffusionmodelwithamoisturedependentdiffusioncoefficientforparboiledrice
_version_	1768543427051388928

A diffusion model with a moisture dependent diffusion coefficient for parboiled rice

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