Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/244166
Type: Artigo
Title: Mathematical modeling of the drying of orange bagasse associating the convective method and infrared radiation
Title Alternative: Modelagem matemática da secagem de bagaço de laranja associado ao método convectivo e radiação infravermelha
Author: Sánchez-Sáenz , Carolina M.
Nascimento, Vânia R. G.
Biagi , João D.
Oliveira , Rafael A. de
Abstract: Mathematical modeling enables dimensioning of dryers, optimization of drying conditions and the evaluation of process performance. The aim of this research was to describe the behavior of orange bagasse drying using Page's and Fick's second law models, and to assess activation energy (using Arrhenius equation), moisture content, water activity and bulk density of product at the end of the process. The drying experimental assays were performed in 2011 with convective air temperature between 36 and 64 degrees C and infrared radiation application time in the range from 23 to 277 s in accordance with the experimental central composite rotatable design. Analysis of variance and F-test were applied to results. At the end of the drying process, moisture content was about 0.09 to 0.87 db and water activity was between 0.25 and 0.87. Bulk density did not vary under studied conditions. Empirical Page's model demonstrated better representation of experimental data than the Fick's model for spheres. Activation energy values were about 18.491; 14.975 and 11.421 kJ mol(-1) for infrared application times of 60; 150 e 244 s, respectively.
Mathematical modeling enables dimensioning of dryers, optimization of drying conditions and the evaluation of process performance. The aim of this research was to describe the behavior of orange bagasse drying using Page's and Fick's second law models, an
metadata.dc.description.abstractalternative: A modelagem matemática permite o dimensionamento de secadores, otimização das condições de secagem e avaliação do desempenho do processo. O objetivo deste trabalho foi descrever o comportamento da secagem de bagaço de laranja utilizando-se os modelos de P
Subject: Difusividade efetiva
Atividade de água
Country: Brasil
Editor: Universidade Federal de Campina Grande/Centro de Ciencias e Tecnologia
Citation: Mathematical Modeling Of The Drying Of Orange Bagasse Associating The Convective Method And Infrared Radiation. Univ Federal Campina Grande, v. 19, p. 1178-1184 DEC-2015.
Rights: aberto
Identifier DOI: 10.1590/1807-1929/agriambi.v19n12p1178-1184
Address: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001201178
Date Issue: 2015
Appears in Collections:FEAGRI - Artigos e Outros Documentos

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