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Research, Society and Development
Article . 2020 . Peer-reviewed
License: CC BY
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Research, Society and Development
Article
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Parâmetros cinéticos da secagem de caules couve folha em forno elétrico

Authors: Victor Herbert de Alcântara Ribeiro; Virgínia Mirtes de Alcântara Silva; Cecília Elisa de Sousa Muniz; Rebeca de Almeida Silva; Raphael da Silva Eduardo; Márcia Ramos Luiz; Mércia Melo de Almeida Mota; +3 Authors

Parâmetros cinéticos da secagem de caules couve folha em forno elétrico

Abstract

O presente estudo tem como objetivo realizar a cinética de secagem dos caules de couve folha em forno elétrico e ajustar modelos matemáticos (empíricos e difusivos) aos dados experimentais. Os caules de couve folha com raio de 1,5mm foram submetidos ao processo de secagem em forno elétrico (1200W) nas temperaturas de 50, 70 e 90 °C. Aos dados experimentais obtidos modelos matemáticos empíricos (Lewis, Handerson & Pabis e Page) e difusivo (condição de contorno do primeiro tipo) foram ajustados. Houve aumento nos valores do parâmetro “a” e redução do parâmetro “b” do modelo de Page quando se teve aumento da temperatura de secagem de 50 para 90 °C. Os modelos de Lewis e Handerson & Pabis não apresentaram correlações dos seus parâmetros com a temperatura utilizada no processo. O modelo de Page foi o que melhor se ajustou aos dados experimentais com coeficiente de determinação R2 acima de 0.99 e menor valor da função qui-quadrado para todas as temperaturas estudadas, principalmente para 70 ºC. No entanto, quando analisado o tempo de secagem a temperatura de 90 ºC apresentou redução 36,36% em relação a 70 ºC, resultando na maior difusividade efetiva. Foi observado que as primeiras horas de secagem foram bastante eficazes na redução de grandes quantidades de água. Como sugestão de trabalhos futuros, pode-se realizar um caracterização física, físico-química e tecnológica do material desidratado e avaliar a influência das temperatura do processo nesses parâmetros.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
gold