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Abstract:

A model for isothermal diffusion of bound water was used to simulate the thin-layer drying kinetics of amaranth grain. The model assumes that the driving force for the transport of bound water is the gradient of spreading pressure. The gradient of spreading pressure was related to the moisture gradient using the GAB isotherm. This variation shows a relative maximum moisture content about 8% (d.b), after which the diffusion coefficient falls sharply as the moisture content is further reduced. To verify the model, drying tests of amaranth grain were conducted at 40 to 70°C in a laboratory drier from 32.5 to 6% moisture (d.b.). Equilibrium moisture contents were also determined using an electronic hygrometer at temperatures and relative humidities corresponding to drying conditions. The applicability of the model to simulation of drying curves was satisfactory in the full range of moisture.

Registro:

Documento: Artículo
Título:The drying of amaranth grain: Mathematical modeling and simulation
Autor:Resio, A.C.; Aguerre, R.J.; Suarez, C.
Filiación:Facultad de Cs. Veterinarias, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Departamento de Tecnología, Universidad Nacional de Lujan, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Departamento de Industrias, Fac. de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:Amaranth grain; Moisture diffusivity; Thin layer drying; Variable diffusivity; Computer simulation; Diffusion; Grain (agricultural product); Hygrometers; Isotherms; Kinetic theory; Mathematical models; Moisture; Thermal effects; Amarnath grain; Moisture diffusivity; Thin layer drying; Variable diffusivity; Drying; Diffusion; Drying; Farm Crops; Isotherms; Kinetics; Mathematical Models; Simulation
Año:2005
Volumen:22
Número:2
Página de inicio:303
Página de fin:309
Título revista:Brazilian Journal of Chemical Engineering
Título revista abreviado:Brazil J Chem Eng
ISSN:01046632
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01046632_v22_n2_p303_Resio

Referencias:

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Citas:

---------- APA ----------
Resio, A.C., Aguerre, R.J. & Suarez, C. (2005) . The drying of amaranth grain: Mathematical modeling and simulation. Brazilian Journal of Chemical Engineering, 22(2), 303-309.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01046632_v22_n2_p303_Resio [ ]
---------- CHICAGO ----------
Resio, A.C., Aguerre, R.J., Suarez, C. "The drying of amaranth grain: Mathematical modeling and simulation" . Brazilian Journal of Chemical Engineering 22, no. 2 (2005) : 303-309.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01046632_v22_n2_p303_Resio [ ]
---------- MLA ----------
Resio, A.C., Aguerre, R.J., Suarez, C. "The drying of amaranth grain: Mathematical modeling and simulation" . Brazilian Journal of Chemical Engineering, vol. 22, no. 2, 2005, pp. 303-309.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01046632_v22_n2_p303_Resio [ ]
---------- VANCOUVER ----------
Resio, A.C., Aguerre, R.J., Suarez, C. The drying of amaranth grain: Mathematical modeling and simulation. Brazil J Chem Eng. 2005;22(2):303-309.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01046632_v22_n2_p303_Resio [ ]