Determinação da umidade da madeira em tora por diferentes métodos

Donato, Danilo Barros; Castro, Renato Vinícius Oliveira; Carneiro, Angélica de Cássia Oliveira; Carvalho, Ana Márcia Macêdo Ladeira; Pereira, Bárbara Luísa Corradi; Oliveira, Aylson Costa; Barbosa, Conrad Julião

doi:10.4336/2014.pfb.34.80.608

Cited by 8 publications

(11 citation statements)

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“…After all the logs reach the 60% moisture level and put in plastic bags, a fraction of sawdust of all radial region (bark-marrow direction) was taken from each log using an electric drilling machine, according to the methodology described by Donato et al (2014). To estimate the initial moisture of each log, the sawdust moisture was determined in a OHAUS MB35 Halogen determining scale with an halogen lamp.…”

Section: Wood Oven Dryingmentioning

confidence: 99%

Eucalyptus Logs Drying at High Temperatures

et al. 2017

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The objective of this work was to evaluate the drying speed of Eucalyptus urophylla logs in high temperatures and the influence of the presence or absence of bark and also the diameter of the log in the drying rate. Eucalyptus logs 60 cm long were divided into three diameter classes: 8-12 cm; 12,1-16 cm and 16,1-20 cm. The logs were dried in a heater with forced air circulation, in the presence or absence of bark in five temperatures: 50, 75, 100, 125 and 150ºC. The mass and the initial moisture were determined from each log and the water loss was kept up with periodic weightings, closing the drying process when the logs reached 20% moisture. The drying rate of the logs was calculated using the ratio between the total loss of moisture and the time in hours in order to reach the established moisture. It was concluded that the increase in temperature promotes the raise of the drying ratio, as being higher for smaller logs in relation to bigger ones and in addition to this, the bark effect was not significant in the drying of eucalyptus logs above 100ºC. It was also concluded that the best conditions for the operation of artificial dryers for Eucalyptus logs containing bark and separated in diameter classes would be at 125ºC.

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Section: Wood Oven Dryingmentioning

confidence: 99%

Eucalyptus Logs Drying at High Temperatures

et al. 2017

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“…Therefore to measure the calorific equivalence between materials, for viability purposes, we will use the Lower Calorific Power (PCI) among materials used for direct burning purposes which are: wood in logs, chips and sawdust. Second (Quirino, 2007); (Donato, 2014), briquettes have Lower Calorific Power (PCI) averaging 4,553 kcal / kg, and compared to crate and drywood firewood, according to the LPF / IBAMA Forest Products Laboratory, these firewoods have Lower Calorific Power (PCI) averaging 1,450 kcal / kg. (Table1): Source: Donato (2014) and Quirino (2007).…”

Section: Introductionmentioning

confidence: 99%

“…Second (Quirino, 2007); (Donato, 2014), briquettes have Lower Calorific Power (PCI) averaging 4,553 kcal / kg, and compared to crate and drywood firewood, according to the LPF / IBAMA Forest Products Laboratory, these firewoods have Lower Calorific Power (PCI) averaging 1,450 kcal / kg. (Table1): Source: Donato (2014) and Quirino (2007).…”

Section: Introductionmentioning

confidence: 99%

Briquetting as an Alternative for the Use of Urban Wood Waste as a Mitigation Process on Environmental Impacts in Manaus

Alencar¹,

Rodrigues²,

Pinto

et al. 2019

Int J Innov Educ Res

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Waste generation has become one of the most important issues of the century, every production process has significant losses due to the lack of proper management, especially wood waste, which becomes environmental liabilities, given the search for low environmental impact solutions, such as Microusina. Briquettes The scenario for initial investments that would be R $ 63,706.62 in fixed costs for implementation purposes and R $ 109,274.02 in variable costs for the first month, added up to R $ 792,980.64 (20%) of the amount spent in the year. 2018. The results of this research reflected that briquetting is an economically viable technological alternative that sets precedents for sustainable development in the Amazon, and may prove to be a powerful instrument for environmental compensation and cooperation among generating agents, collectors and the public authorities. , where it successfully fulfills its social function, generating cultural change and change and attitude towards waste disposal, reduction of generation, reduction of pressure under native forests, and minimization of environmental liabilities.

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“…Segundo Donato et al (2014), a aferição do teor de umidade da madeira é uma etapa que assume um papel fundamental na previsão do comportamento físico e mecânico do material. Além disso, a utilização de peças de madeira com teor de umidade adequado, poderá evitar o surgimento de patologias inerentes à biodeterioração que poderão comprometer o desempenho da estrutura (BRITO, 2014).…”

Section: Introductionunclassified