The use of the orthogonal collocation method on the study of the drying kinetics of soybean seeds

Barrozo, M. A. S.; Henrique, Humberto Molinar; Sartori, D. J. M.; Freire, José Teixeira

doi:10.1016/j.jspr.2005.06.002

Cited by 49 publications

(40 citation statements)

References 11 publications

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“…Thus, determining the influence of these parameters on the response variable of the model can help to indicate what parameters must be estimated with greater accuracy. The DASPK 3.0 code has been used in the optimization of several large-scale engineering problems (Barrozo et al, 2006;Lira et al, 2010). However, there are very few studies on the use of this technique applied to the sensitivity analysis of kinetic parameters.…”

Section: Introductionmentioning

confidence: 99%

A Study of Pyrolysis of Macadamia Nut Shell: Parametric Sensitivity Analysis of the Ipr Model

Xavier

Lira

Schettino

et al. 2016

Braz. J. Chem. Eng.

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-The macadamia tree is known for producing fruit high in fats, enclosed in very hard woody shells. Macadamia nut shell, considered as a by-product from macadamia nut processing, may be a suitable option for pyrolysis. These residues are constituted of cellulose, hemicellulose, lignin and extractives. The Independent Parallel Reaction (IPR) Model has been applied in this work to study the pyrolysis of macadamia nut shell from thermogravimetric experiments. The kinetic parameters and mass fraction of each component were estimated using the Differential Evolution Algorithm. The influence of the model parameters was also analyzed by means of sensitivity studies. The results showed that the decomposition of the macadamia nut shell is more sensitive to the parameters related to the decomposition of lignin. The results of sensitivity analysis also showed that the activation energy affects the total biomass conversion more strongly than the other parameters and the contribution of extractives in the IPR model is as important as the hemicellulose.

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Section: Introductionmentioning

confidence: 99%

A Study of Pyrolysis of Macadamia Nut Shell: Parametric Sensitivity Analysis of the Ipr Model

Xavier

Lira

Schettino

et al. 2016

Braz. J. Chem. Eng.

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“…Conventional drying with hot air is commonly encountered in dehydration (Lisboa et al, 2007;Barrozo et al 2006). However, an alternative way to remove excess water from food is by lyophilization, which is a drying process based on water sublimation from the material caused by application of low pressure on frozen material.…”

Section: Introductionmentioning

confidence: 99%

Drying kinetics, structural characteristics and vitamin C retention of dedo-de-moça pepper (Capsicum baccatum) during convective and freeze drying

Véras

Béttega

Freire

et al. 2012

Braz. J. Chem. Eng.

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-The main objective of this study was to evaluate the effect of the drying process on the vitamin C levels and physical properties of dedo-de-moça pepper. The drying kinetics and the structural properties were determined as a function of moisture content. Convective drying was compared with freeze-drying in terms of product quality, structural properties, retention of vitamin C and rehydration characteristics. Empirical and semi-empirical equations were used to describe the drying and rehydration kinetics. Nonlinear analysis applied to results of convective drying, based on curvature measures and bias measures, showed that the only equation that gives good inference results based on least squares estimators is the Overhults equation. The characterization of the rehydration process was done by determining the indexes that take into account the water absorption capacity and solutes losses. The material dried by lyophilization show greater potential to rehydrate.

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“…Inúmeros trabalhos têm sido realizados com o objetivo de analisar a secagem de sementes de diversas oleaginosas como, por exemplo: pinhão manso (GOLDFARB et al, 2008;PRADHAN et al, 2009;SIRISOMBOON;KITCHAIYA, 2009);canola (CORRÊA et al, 1999); soja (BARROZO et al, 2006;MIRANDA et al, 1999); avelã (OZDEMIR; DEVRES, 1999); girassol (SACILIK et al, 2007); amendoim (CORRÊA et al, 2007) e mamona (GONELI, 2008).…”

Section: Introductionunclassified

Qualidade das sementes de pinhão manso submetidas à secagem artificial

Ullmann¹,

Resende²,

Sales³

et al. 2010

Rev. Ciênc. Agron.

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Resumo -Na fase de pós-colheita do pinhão manso a secagem é o processo mais utilizado para assegurar sua qualidade e estabilidade. Assim, objetivou-se no presente trabalho analisar a secagem das sementes de pinhão manso, bem como verificar o efeito das diversas condições de ar na qualidade do produto, por meio das análises de condutividade elétrica, absorção de água, porcentagem de germinação e índice de velocidade de germinação (IVG). A secagem foi realizada em secador experimental testando as temperaturas de 30; 40; 50; 60 e 70 °C, em delineamento inteiramente casualizado, com quatro repetições. Verificou-se que o aumento da temperatura do ar de secagem aumenta os danos nas sementes de pinhão manso, porém não interfere na absorção de água do produto. Já a germinação se mateve elevada, mesmo na temperatura de secagem mais alta, apresentando valores acima de 91% e o IVG não apresentou diferenças estatísticas. Portanto, conclui-se que a qualidade fisiológica das sementes de pinhão manso é afetada pela temperatura de secagem.Palavras-chave -Pinhão. Plantas-desidratação. Sementes-qualidade. Germinação. Abstract -The post-harvest drying of jatropha is the most frequently used process to ensure quality and stability. The aim of this work was to analyze the seed drying of jatropha and check the effect of air conditions on seed quality, through electrical conductivity, water absorption germination test and index of germination velocity (IGV). Drying was done in an experimental drier, testing controlled temperatures of 30; 40; 50; 60 and 70 °C, in a randomized design with four replications. It was found that increasing the temperature of the drying air increases the damage on the seeds of jatropha, but does not interfere with water absorption of the product. The germination is high even at the highest drying temperature, with values above 91% and IVG did not show statistical differences. Therefore, it was concluded that the physiological quality of seeds of Jatropha curcas is affected by drying temperature.

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The use of the orthogonal collocation method on the study of the drying kinetics of soybean seeds

Cited by 49 publications

References 11 publications

A Study of Pyrolysis of Macadamia Nut Shell: Parametric Sensitivity Analysis of the Ipr Model

A Study of Pyrolysis of Macadamia Nut Shell: Parametric Sensitivity Analysis of the Ipr Model

Drying kinetics, structural characteristics and vitamin C retention of dedo-de-moça pepper (Capsicum baccatum) during convective and freeze drying

Qualidade das sementes de pinhão manso submetidas à secagem artificial

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