The drying of amaranth grain: Mathematical modeling and simulation
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 gradi...
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01046632_v22_n2_p303_Resio http://hdl.handle.net/20.500.12110/paper_01046632_v22_n2_p303_Resio |
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paper:paper_01046632_v22_n2_p303_Resio2023-06-08T15:10:32Z The drying of amaranth grain: Mathematical modeling and simulation Aguerre, Roberto Jorge 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 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. Fil:Aguerre, R.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01046632_v22_n2_p303_Resio http://hdl.handle.net/20.500.12110/paper_01046632_v22_n2_p303_Resio |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Aguerre, Roberto Jorge The drying of amaranth grain: Mathematical modeling and simulation |
| topic_facet |
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 |
| description |
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. |
| author |
Aguerre, Roberto Jorge |
| author_facet |
Aguerre, Roberto Jorge |
| author_sort |
Aguerre, Roberto Jorge |
| title |
The drying of amaranth grain: Mathematical modeling and simulation |
| title_short |
The drying of amaranth grain: Mathematical modeling and simulation |
| title_full |
The drying of amaranth grain: Mathematical modeling and simulation |
| title_fullStr |
The drying of amaranth grain: Mathematical modeling and simulation |
| title_full_unstemmed |
The drying of amaranth grain: Mathematical modeling and simulation |
| title_sort |
drying of amaranth grain: mathematical modeling and simulation |
| publishDate |
2005 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01046632_v22_n2_p303_Resio http://hdl.handle.net/20.500.12110/paper_01046632_v22_n2_p303_Resio |
| work_keys_str_mv |
AT aguerrerobertojorge thedryingofamaranthgrainmathematicalmodelingandsimulation AT aguerrerobertojorge dryingofamaranthgrainmathematicalmodelingandsimulation |
| _version_ |
1768542357521694720 |