Thermal Analysis of Granulometry Selected Wood Dust Particles

Marková, Iveta; Hroncová, Emília; Tomaškin, J.; Tureková, Ivana

doi:10.15376/biores.13.4.8041-8060

Cited by 16 publications

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“…The experimental results indicate a variability in the number of individual fractions depending on the wood dust formed. The statement is in accordance with other results, which we realized during the research on the wood dust of beech samples [13,[61][62][63][64][65][66]. Kminiak et al [67] have made statements regarding the course of the machining of spruce and following the making of dust fractions as ambiguous.…”

Section: Statistical Evaluation Of the Obtained Resultssupporting

confidence: 88%

“…This risk lies in the inhalation of the dust produced [7][8][9][10][11]. Wood dust poses a significant fire hazard, whether turbulent or settled [12][13][14].After ignition, the deposited dust may start to burn in the form of decay, incandescence and flame combustion [15][16][17]. When the available surface is greater, the process accelerates rapidly, increasing the emissions [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Fire Parameters of Spruce (Picea abies Karst. (L.)) Dust Layer from Different Wood Technologies Slovak Case Study

et al. 2022

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The issue of the formation of wood dust particles in the work environment is still an actual topic in terms of its impact on employee health and the risk of fire or explosion in a woodworking operation. This article deals with the characteristics of spruce dust (Picea abies Karst. (L.)), which was taken from several types of wood technology. Experimental samples of spruce dust were taken from four types of sawing technologies, including grinding, briquetting and from the suction device container. The physical parameters of the samples taken were monitored and the particle size analysis was determined. The granulometric composition of the samples is significantly different. The sample of spruce wood dust from sawing has the most numerous fraction (250 µm), while the sample from grinding has the most numerous fraction 63–250 µm (87%).The aim of the paper was to monitor the minimum ignition temperature of the settled spruce dust layer and to look for a significant dependence of the minimum ignition temperature and ignition time on the type of spruce dust sample. A significant dependence was not confirmed. Significant moisture dependence of the samples was confirmed; the highest humidity was observed in the container, the lowest in sawing.

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Section: Statistical Evaluation Of the Obtained Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Fire Parameters of Spruce (Picea abies Karst. (L.)) Dust Layer from Different Wood Technologies Slovak Case Study

et al. 2022

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“…The ignition of wood dust from spruce, oak and beech which are the most commonly used wood species in the industry, is monitored depending on the ignition source (a hot surface, an electric coil, a cigarette), size of the contact area between ignition source and surface wood dust contact with the ignition source. The research follows up on solved Slovak research projects of wood dust (such as [1,20,44]).…”

Section: Methodsmentioning

confidence: 99%

“…The finest dust was produced from oak (Figure 4) with the largest fraction of 71 μm to 90 μm. The granulometric composition of the individual samples is influenced by the nature of the abrasive processes by which the samples were produced and the type of trees which were used [1,20,55,56]. The examined samples of dust were produced in various technological operations, so their granulometric composition also differs.…”

Section: Sieve Analysismentioning

confidence: 99%

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Ignition of Deposited Wood Dust Layer by Selected Sources

Tureková

Marková

2020

Applied Sciences

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The main waste of wood sanding technology is wood dust. The formation of wood dust affects its behaviour. Wood dust can be in a turbulent form and behaves explosively or in a settled form where it becomes flammable. Dust particles are barely detectable by the naked eye, wood dust still presents substantial health, safety, fire and explosion risks to employees. This article deals with the evaluation of ignition temperature and surface temperature of deposited wood dust samples by selected ignition sources. The influence of selected physical properties of wood dust, the size of the contact area between the ignition source and the combustible material, the spatial arrangement during the ignition and the application time of the ignition source are analysed. The paper describes the behaviour of a 15 mm deposited layer of wood dust of spruce (Picea abies L.), beech (Fagus silvatica L.). oak (Quercus petraea Liebl.) caused by three potential ignition sources—a hot surface, an electric coil and a smouldering cigarette. Prior to the experimental determination of the ignition temperature, dust moisture content which did not significantly affect the ignition phase of the samples, as well as sieve analysis of tested samples were determined. The lowest minimum ignition temperature on the hot plate, as an important property of any fuel, because the combustion reaction of the fuel becomes self-sustaining only above this temperature, was reached by the oak dust sample (280 °C), the highest by the spruce dust sample (300 °C). The ignition process of wood dust was comparable in all samples, differing in the ignition time and the area of the thermally degraded layer. The least effective ignition source was a smouldering cigarette.

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Development of HDPE/natural fiberboard nanocomposite reinforced Bi₂O₃/BaO and H₃BO₃: A sustainable approach for gamma and neutron shielding application

Yassene,

Abd Elwahab,

Eyssa

2024

Polymer Engineering & Sci

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Radiation shielding materials significantly contribute to various fields. In this research, a new eco‐friendly nanocomposite shielding material based on high‐density polyethylene (HDPE) and natural fiberboard (NF) with different concentrations of barium oxide nanowires (BaO), bismuth oxide nanorods (Bi2O3), and boric acid (H3BO3) is constructed and investigated for 137Cs, 60Co gamma ray, and 142Am–Be neutron sources. Mechanical and physical testing and thermal analysis were conducted to assess the impact of nanostructure incorporation on the structural integrity and thermal stability of the nanocomposite. The 60Co gamma and neutron attenuation properties were evaluated using the appropriate radiation sources. The transmission and absorption coefficients of the nanocomposites were measured. The results demonstrated that HDPE/NF filled with BaO, Bi2O3 nanostructure, and boric acid has higher tensile strength and thermal stability than unfilled HDPE/NF. The results displayed that the HDPE/NF filled with 1.5% Bi2O3 and 1.5% BaO improved gamma attenuation and also HDPE/NF/10% boric acid had a high value. The outcomes of this research provide valuable insights into the design and fabrication of radiation shielding materials by understanding the relationship between nanoparticle concentration, radiation attenuation properties, and the mechanical and thermal characteristics of the nanocomposite. This study aims to optimize the performance and applicability of HDPE/NF nanocomposites for radiation protection applications.Highlights Synthesis of BaO nanowires and bismuth oxide (Bi2O3) nanorods by hydrothermal simple method. Fabrication and characterization of a new HDPE/natural fiberboard (NF) nanocomposite containing BaO/Bi2O3/H3BO3 as an eco‐friendly additive. The HDPE/NF/1.5% BaO/1.5% Bi2O3 nanocomposite has better tensile strength and more thermal stability. Usage of HDPE/NF/1.5% BaO/1.5% Bi2O3 nanocomposite that should be utilized for radiation shielding. Usage of HDPE/NF/1.5% BaO/1.5% Bi2O3/10% H3BO3 nanocomposite that should be utilized for neutron attenuation performance.

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Thermal Analysis of Granulometry Selected Wood Dust Particles

Cited by 16 publications

References 0 publications

Fire Parameters of Spruce (Picea abies Karst. (L.)) Dust Layer from Different Wood Technologies Slovak Case Study

Fire Parameters of Spruce (Picea abies Karst. (L.)) Dust Layer from Different Wood Technologies Slovak Case Study

Ignition of Deposited Wood Dust Layer by Selected Sources

Development of HDPE/natural fiberboard nanocomposite reinforced Bi₂O₃/BaO and H₃BO₃: A sustainable approach for gamma and neutron shielding application

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Thermal Analysis of Granulometry Selected Wood Dust Particles

Cited by 16 publications

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Fire Parameters of Spruce (Picea abies Karst. (L.)) Dust Layer from Different Wood Technologies Slovak Case Study

Fire Parameters of Spruce (Picea abies Karst. (L.)) Dust Layer from Different Wood Technologies Slovak Case Study

Ignition of Deposited Wood Dust Layer by Selected Sources

Development of HDPE/natural fiberboard nanocomposite reinforced Bi2O3/BaO and H3BO3: A sustainable approach for gamma and neutron shielding application

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Development of HDPE/natural fiberboard nanocomposite reinforced Bi₂O₃/BaO and H₃BO₃: A sustainable approach for gamma and neutron shielding application