Drying and storage of corn grains for ethanol production in Brazil

Coradi, Paulo Carteri; Milane, Lélia Vanessa; Camilo, Lucas Jandrey; Andrade, Maria Gabriela de Oliveira

doi:10.14393/bj-v32n5a2016-32754

Cited by 8 publications

(7 citation statements)

References 21 publications

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“…Aeration of the stored grain mass did not significantly reduce the grain mass temperature (0.5 to 1 °C) which (Cardoso et al, 2012;Quirino et al, 2013;Coradi et al, 2016b;Nascimento & Queiroz, 2016). In these conditions, it was observed that the grain deterioration process increased as a function of the water content change after equilibration with the air temperature and relative humidity ( Table 3).…”

Section: Resultsmentioning

confidence: 92%

“…The losses of products during storage mean financial losses for the product holder. Grains can suffer damage during storage period due to external or inherent factors affecting the grain mass which are: physical (humidity and temperature), chemical (oxygen availability), and biological (rodents, insects, fungi, and bacteria) factors (Lopes et al, 2010;Barbosa et al, 2012;Rigo et al, 2012;Quirino et al, 2013;Coradi et al, 2016b).…”

Section: Introductionmentioning

confidence: 99%

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Experimental silo-dryer-aerator for the storage of soybean grains

Coradi

Lemes

2018

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThis study aimed to verify the capacity of silo-dryer-aerator prototype equipment operating as a silo-storage-aerator for soybean quality analysis. Soybeans with water content of 17% (wet basis -w.b.) were dried and stored in a silo-dryer-aerator system that was designed using a drying chamber, four independent storage cells, and a static capacity of 164 kg. Another batch of grains was stored in a silo-storage-aerator with a capacity of 1,200 kg. The experiment was set up in a completely randomized factorial 5 × 4 experimental design including five grain batches stored after being dried at 30, 40, and 50 °C (mixed grains were dried at three temperatures) in the silo-dryer-aerator cells and one mixed grain batch stored in the silo-storage-aerator system under ambient air conditions for four storage times (zero, one, two, and three months). There was no difference between the grains stored in the silo-dryer-aerator and silo-storage-aerator at the end of the three-month storage in terms of the physico-chemical quality. The storage time associated with drying at 50 °C caused a reduction in the physical-chemical quality of the grains. The silo-dryer-aerator system was presented as a possible alternative to store soybean (Glycine max L.) grains.Silo-secador-aerador experimental para armazenagem de grãos de soja R E S U M O Objetivou-se com este estudo verificar a capacidade de um equipamento protótipo silosecador-aerador, operando como silo-armazenador-aerador para análise da qualidade dos grãos de soja. Os grãos de soja com teores de água de 17% (b.u.) foram submetidos à secagem e armazenagem em um sistema de silo-secador-aerador, projetado com uma câmara de secagem e quatro células independentes de armazenagem, com capacidade estática de 164 kg. Outro lote de grãos foi armazenado em um silo-armazenador-aerador com capacidade de 1.200 kg. O experimento foi montado em um delineamento experimental inteiramente casualizado, fatorial 5 x 4, sendo cinco lotes de grãos armazenados após a secagem com temperaturas do ar de secagem (30, 40, 50 °C, grãos misturados na secagem com as três temperaturas), nas células 1, 2, 3 e 4, respectivamente, do sistema silo-secador-aerador e um lote de grãos misturados e armazenados no sistema silo-armazenador-aerador nas condições do ar ambiente, quatro tempos de armazenamento (zero, um, dois e três meses). Observou-se que não houve diferença entre os grãos armazenados no silo-secador-aerador e no silo-armazenador-aerador quanto à qualidade físico-química ao final dos três meses de armazenamento. O tempo de armazenamento associado à secagem a uma temperatura de 50 °C proporcionou uma redução na qualidade físico-química dos grãos. O sistema silo-secadoraerador apresentou-se como uma alternativa viável para o armazenamento de grãos de soja.

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Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Experimental silo-dryer-aerator for the storage of soybean grains

Coradi

Lemes

2018

Rev. bras. eng. agríc. ambient.

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“…According to the authors, this is because the source of H 2 results from water vapor from root respiration by the action of ferredoxin containing sulfur (Vitti et al, 2015).Since gypsum provides a greater absorption of nutrients and water by the plant (Souza and Lobato, 2004), the increase in the physical properties of the grains in function of the increase in gypsum doses is attributed to a greater increase in water content in relation to photoassimilates. This is proven by porosity showing an increase (0.41%) higher than the weight of 1,000 grains (0.29%), which is linked to a decrease in the associated with the decrease of water levels, lead to reductions in length, width, thickness, volume, circularity and roundness of corn grains (Coradi et al, 2016). Since there was variability for gypsum doses, the path analysis revealed a severe multicollinearity for the inverse matrix of independent variables (determinant of the matrix X'X = 1.36 x 10 -4…”

Section: Resultsmentioning

confidence: 96%

Productivity and physical properties of corn grains treated with different gypsum doses

Vidal¹,

Soares²,

Teixeira³

et al. 2016

Afr. J. Agric. Res.

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The productivity of corn grains is directly associated with factors related to soil fertility, which are relevant to the application of gypsum (calcium sulphate), in addition to variables inherent to the grain. Thus, the objective of this study was to evaluate the variability of the physical properties of grains (circularity, roundness, bulk density, real density, volume and porosity) and production components (productivity and weight of 1,000 grains) of corn irrigated with increasing doses of gypsum, and evaluate the effects of direct and indirect associations of physical properties of grains and weight of 1,000 grains on grain productivity. The soil of the experiment was a Dystrophic Red Latosol. The experiment was conducted using a random blocks design. An analysis of variance by F test and a univariate regression analysis were performed regarding the relations among culture variables with different doses of gypsum (0.0, 2.5, 5.0, 7.5 and 10 t ha-1). An analysis of variance by t test was also performed together with a multivariate analysis using a path analysis with multicollinearity in order to analyze the direct and indirect effects of the physical properties of grains and weight of 1,000 grains on productivity. The bulk density of the grains had a direct effect on productivity of corn grains. In addition, the decrease in bulk density in function of the increase of gypsum doses is attributed to a greater increase in porosity in relation to weight of 1,000 grains.

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“…A deterioração da massa de grãos armazenados é o resultado da interação entre variáveis físicas (temperatura e umidade); químicas (disponibilidade de oxigênio no ar intergranular) e biológicas (respiração e microrganismos). O percentual de degradação dos grãos é diretamente proporcional ao aumento e sinergismo do efeito destas variáveis (CHULZE, 2010;QUIRINO et al, 2013;CORADI et al, 2016). A umidade e temperatura são as variáveis que mais influenciam a taxa de degradação (CORADI et al, 2015).…”

Section: Introductionunclassified