Artículos de revistas
Mathematical Modeling Of Convective Drying With Infrared Radiation Of Moringa Oleifera Grains [modelagem Matemática Da Secagem Convective Com Radiação Infravermelha De Grãos De Moringa Oleifera]
Registro en:
Revista Brasileira De Engenharia Agricola E Ambiental. Departamento De Engenharia Agricola - Ufcg/cnpq, v. 19, n. 7, p. 686 - 692, 2015.
14154366
10.1590/1807-1929/agriambi.v19n7p686-692
2-s2.0-84937869259
Institución
Resumen
Mathematical models applied to drying assists in sizing dryers, predicting drying rate, improvement of drying conditions and assessment of process quality. Thus, the aim of this study was to evaluate the fitting of Page, Midilli, Newton and second law of Fick models to the experimental data of convective drying with application of infrared radiation of Moringa oleifera L. grains. The effects of factors -air temperature (30-60°C), air velocity (0.55 to 1.05 m s-1), infrared radiation application time (120-300 s) and infrared radiation intensity (1500-4500 W) on the effective diffusivity, moisture content, water activity and drying time was also evaluated. The models explained more than 98% of the drying behavior and the Midilli model showed the best fit for the experimental data. The effective diffusivity was calculated using the equation proposed by the solution of second law of Fick, for spherical shape, and the values ranged from 6.44x10-10 to 9.89x10-10 m2 s-1. The factors air temperature and infrared radiation application time were significant for all studied variables, considering 90% of confidence. © 2015, Departamento de Engenharia Agricola - UFCG/Cnpq. All rights reserved. 19 7 686 692 Abe, T., Afzal, T.M., Thin-layer infrared radiation drying of rough rice (1997) Journal of Agricultural Engineering Research, 67, pp. 289-297. , http://dx.doi.org/10.1006/jaer.1997.0170 Afzal, T.M., Abe, T., Diffusion in potato during far infrared radiation drying (1998) Journal of Food Engineeting, 37, pp. 353-365. , http://dx.doi.org/10.1016/S0260-8774(98)00111-3 Arantes, C.C., (2010) Utilização De Coagulantes Naturais à Base De Sementes De <I>Moringa Oleifera </I>E Tanino Como Auxiliares Da filtração Em Mantas não Tecidas, 109p. , Campinas: UNICAMP, Dissertação Mestrado (2009) Secretaria De Defesa Agropecuária, 398p. , Brasil. Ministério da Agricultura, Pecuária e Abastecimento. Regras para análise de sementes, Brasília: MAPA/ACS Celma, A.R., López-Rodríguez, F., Blázquez, F.C., Experimental modeling of infrared drying of industrial grape by-products (2009) Food and Bioproducts Processing, 87, pp. 247-253. , http://dx.doi.org/10.1016/j.fbp.2008.10.005 Doymaz, I., Thin-layer drying characteristics of sweet potato slices and mathematical modelling (2011) Heat Mass Transfer, 47, pp. 277-285. , http://dx.doi.org/10.1007/s00231-010-0722-3 Franco, M., (2010) Uso De Coagulante extraído De Sementes De <I>Moringa Oleifera </I>Como Auxiliar No Tratamento De água Por filtração Em múltiplas Etapas, 90p. , Campinas: UNICAMP, Dissertação Mestrado Hassini, L., Azzouz, S., Peczalski, R., Belghith, A., Estimation of potato moisture diffusivity from convective drying kinetics with correction for shrinkage (2007) Journal of Food Engineering, 79, pp. 47-56. , http://dx.doi.org/10.1016/j.jfoodeng.2006.01.025 Katayon, S., Noor, M., Asma, M., Ghani, L., Thamer, A.M., Azni, I., Ahmad, J., Suleyman, A.M., Effects of storage conditions of Moringa oleifera seeds on its performance in coagulation (2006) Bioresource Technology, 97, pp. 1455-1460. , http://dx.doi.org/10.1016/j.biortech.2005.07.031 Markowski, M., Sobieski, W., Konopka, I., Tanska, M., Białobrzewski, I., Drying characteristics of barley grain dried in a spouted-bed and combined ir-convection dryers (2007) Drying Technology, 25, pp. 1621-1632. , http://dx.doi.org/10.1080/07373930701590715 Ndabigengesere, A., Narasiah, K.S., Talbot, B.G., Active agents and mechanism of coagulation of turbid waters using Moringa oleifera (1995) Water Research, 29, pp. 703-710. , http://dx.doi.org/10.1016/0043-1354(94)00161-Y Nindo, C., Mwithiga, G., Infrared drying (2011) Infrared Heating for Food and Agricultural Processing, pp. 89-97. , Pan, Z. Atungulu, G. G, New York: CRC Press, Cap. 5 Oliveira, R.A., (2009) Estudo Da Secagem Em Dois Tipos De Secadores: Avaliação Dos parâmetros Operacionais E Comportamento Do Material Seco, 218p. , Campinas: UNICAMP, Tese Doutorado Ponkham, K., Meeso, N., Soponronnarit, S., Siriamornpun, S., Modeling of combined far-infrared radiation and air drying of a ring shaped-pineapple with/without shrinkage (2012) Food and Bioproducts Processing, 90, pp. 155-164. , http://dx.doi.org/10.1016/j.fbp.2011.02.008 Puente-Díaz, L., Ah-Hen, K., Vega-Gálvez, A., Lemus-Mondaca, R., Di Scala, K., Combined infrared-convective drying of murta (Ugni molinae Turcz) berries: Kinetic modeling and quality assessment (2013) Drying Technology, 31, pp. 329-338. , http://dx.doi.org/10.1080/07373937.2012.736113 Resende, O., Ullmann, R., Siqueira, V.C., Chaves, T.H., Ferreira, L.U., Modelagem matemática e difusividade efetiva das sementes de pinhão-manso (Jatropha curcas L.) durante a secagem (2011) Engenharia Agrícola, 31, pp. 1123-1135. , http://dx.doi.org/10.1590/S0100-69162011000600010 Sakai, N., Mao, W., Infrared heating (2006) Thermal Food Processing: New Technologies and Quality Issues, pp. 493-522. , In: Sun, D. (ed.), New York: CRC Press, Cap.16 Sandu, C., Infrared radiative drying in bod engineering: A process analysis (1986) Blotechnology Progress, 2, pp. 109-119. , http://dx.doi.org/10.1002/btpr.5420020305 Sharma, G.P., Verma, R.C., Pathare, P.B., Thin-layer infrared radiation drying of onion slices (2005) Journal of Food Engineering, 67, pp. 361-366. , http://dx.doi.org/10.1016/j.jfoodeng.2004.05.002 Srikiatden, J., Roberts, J.S., Measuring moisture diffusivity of potato and carrot (Core and cortex) during convective hot air and isothermal drying (2006) Journal of Food Engineering, 74, pp. 143-152. , http://dx.doi.org/10.1016/j.jfoodeng.2005.02.026 Supmoon, N., Noomhorm, A., Influence of combined hot air impingement and infrared drying on drying kinetics and physical properties of potato chips (2013) Drying Technology, 31, pp. 24-31. , http://dx.doi.org/10.1080/07373937.2012.711792 Togrul, H., Simple modeling of infrared drying of fresh apple slices (2005) Journal of Food Engineering, 71, pp. 311-323. , http://dx.doi.org/10.1016/j.jfoodeng.2005.03.031