Drying kinetics of sunflower grains
ABSTRACT The objectives of this study were to fit different mathematical models to experimental data of drying of sunflower grains, determine and evaluate the effective diffusion coefficient and obtain the activation energy for the process during the drying under various conditions of air. The sunfl...
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Universidade Federal de Campina Grande
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| Series: | Revista Brasileira de Engenharia Agrícola e Ambiental |
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| author | Thaís A. de S. Smaniotto Osvaldo Resende Kelly A. de Sousa Daniel E. C. de Oliveira Rafael C. Campos |
| author_facet | Thaís A. de S. Smaniotto Osvaldo Resende Kelly A. de Sousa Daniel E. C. de Oliveira Rafael C. Campos |
| author_sort | Thaís A. de S. Smaniotto |
| collection | DOAJ |
| description | ABSTRACT The objectives of this study were to fit different mathematical models to experimental data of drying of sunflower grains, determine and evaluate the effective diffusion coefficient and obtain the activation energy for the process during the drying under various conditions of air. The sunflower grains were collected with an initial moisture content of 0.5267 dry basis (d.b.) and dried in an oven with forced air ventilation under five temperature conditions: 35, 50, 65, 80 and 95 °C, until reaching the moisture content of 0.0934 ± 0.0061 (d.b.). Among the analyzed models, Wang and Singh showed the best fit to describe the drying phenomenon. The effective diffusion coefficient of sunflower grains increased with the increment in air temperature and has activation energy for liquid diffusion in the sunflower drying of 29.55 kJ mol-1. |
| format | Article |
| id | doaj-art-2d052e9531454d08ac689b9268e17687 |
| institution | OA Journals |
| issn | 1807-1929 |
| language | English |
| publisher | Universidade Federal de Campina Grande |
| record_format | Article |
| series | Revista Brasileira de Engenharia Agrícola e Ambiental |
| spelling | doaj-art-2d052e9531454d08ac689b9268e176872025-08-20T02:01:34ZengUniversidade Federal de Campina GrandeRevista Brasileira de Engenharia Agrícola e Ambiental1807-192921320320810.1590/1807-1929/agriambi.v21n3p203-208S1415-43662017000300203Drying kinetics of sunflower grainsThaís A. de S. SmaniottoOsvaldo ResendeKelly A. de SousaDaniel E. C. de OliveiraRafael C. CamposABSTRACT The objectives of this study were to fit different mathematical models to experimental data of drying of sunflower grains, determine and evaluate the effective diffusion coefficient and obtain the activation energy for the process during the drying under various conditions of air. The sunflower grains were collected with an initial moisture content of 0.5267 dry basis (d.b.) and dried in an oven with forced air ventilation under five temperature conditions: 35, 50, 65, 80 and 95 °C, until reaching the moisture content of 0.0934 ± 0.0061 (d.b.). Among the analyzed models, Wang and Singh showed the best fit to describe the drying phenomenon. The effective diffusion coefficient of sunflower grains increased with the increment in air temperature and has activation energy for liquid diffusion in the sunflower drying of 29.55 kJ mol-1.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000300203&lng=en&tlng=enmathematical modelingHeliantus annusliquid diffusivity |
| spellingShingle | Thaís A. de S. Smaniotto Osvaldo Resende Kelly A. de Sousa Daniel E. C. de Oliveira Rafael C. Campos Drying kinetics of sunflower grains Revista Brasileira de Engenharia Agrícola e Ambiental mathematical modeling Heliantus annus liquid diffusivity |
| title | Drying kinetics of sunflower grains |
| title_full | Drying kinetics of sunflower grains |
| title_fullStr | Drying kinetics of sunflower grains |
| title_full_unstemmed | Drying kinetics of sunflower grains |
| title_short | Drying kinetics of sunflower grains |
| title_sort | drying kinetics of sunflower grains |
| topic | mathematical modeling Heliantus annus liquid diffusivity |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000300203&lng=en&tlng=en |
| work_keys_str_mv | AT thaisadessmaniotto dryingkineticsofsunflowergrains AT osvaldoresende dryingkineticsofsunflowergrains AT kellyadesousa dryingkineticsofsunflowergrains AT danielecdeoliveira dryingkineticsofsunflowergrains AT rafaelccampos dryingkineticsofsunflowergrains |