A comparative study of morphological characteristics of medium-density fiberboard dust by sieve and image analyses

Ding, Tao; Zhao, Jingkai; Zhu, Nanfeng; Wang, Chengming

doi:10.1186/s10086-020-01896-x

Cited by 12 publications

(5 citation statements)

References 25 publications

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“…By sieving the samples, the polydisperse system is completely divided into individual groups [55][56][57][58]. The resulting fractions contain particles with a size within certain limits given by the dimensions of the sieves used.…”

Section: Results Of Determination Of Physical Parameters Of Spruce Wood Dust Samplesmentioning

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 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: Results Of Determination Of Physical Parameters Of Spruce Wood Dust Samplesmentioning

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 surface morphology was obtained by SEM analysis and was in direct agreement with the measurements of the porosity above. The FB power from the mechanical processing maintained its irregular and fibrous shapes [2,56], as shows in Figure 6a, where some of the woody fibers tended to agglomerate and form bundles in their shape. With a low proportion of glucose added into FB, the biochar morphology did not obviously change (see Figure 6b,c).…”

Section: Effects Of Fb:glucose Ratio On Physiochemical Property In Charsmentioning

confidence: 90%

“…irregular and fibrous shapes [2,56], as shows in Figure 6a, where some of the woody fibers tended to agglomerate and form bundles in their shape. With a low proportion of glucose added into FB, the biochar morphology did not obviously change (see Figure 6b,c).…”

Section: Effects Of Fb:glucose Ratio On Physiochemical Property In Charsmentioning

confidence: 98%

N Evolution and Physiochemical Structure Changes in Chars during Co-Pyrolysis: Effects of Abundance of Glucose in Fiberboard

Liu

Ming

et al. 2020

Energies

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The simple incineration of wood-based panels (WBPs) waste generates a significant amount of NOx, which has led to urgency in developing a new method for treating the N-containing biomass residues. This work aims to examine the N evolution and physiochemical structural changes during the co-pyrolysis of fiberboard and glucose, where the percentage of glucose in the feedstock was varied from 0% to 70%. It was found that N retention in chars was monotonically increased with increasing use of glucose, achieving ~60% N fixation when the glucose accounted for 70% in the mixture. Pyrrole-N (N-5) and Pyridine-N (N-6) were preferentially formed at high ratios of glucose to fiberboard. While the relevant importance of volatile–char interactions to N retention and transformation could be observed, the volatile–volatile reactions from the two feedstocks played a vital role in the increase in abundance of glucose. With the introduction of glucose, the porous structure and porosity in chars from the co-pyrolysis were dramatically altered, whereas the devolatilization of glucose tended to generate larger pores than the fiberboard. The insignificant changes in carbon structure of all chars revealed by Raman spectroscopy would practically allow us to apply the monosaccharides to the WBPs for regulating N evolution without concerns about its side effects for char carbon structures.

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“…According to Lim et al 2012 [ 15 ], worldwide particulate matter emissions are the main environmental issue of health illnesses, and air pollution causes premature deaths. Since 1995, the International Agency for Research on Cancer (IARC) has classified wood dust as a carcinogen of the human (group I) that induces nasal, pharynx, and larynx malignancies [ 16 , 17 ]. European Union directives identify hardwood dust as a human carcinogen and from January 2023 establish an occupational exposure limit (OEL) of 2 mg∙m −3 of inhaled hardwood particles over an 8-h reference period.…”

Section: Introductionmentioning

confidence: 99%

Effect of Low-Thermal Treatment on the Particle Size Distribution in Wood Dust after Milling

et al. 2023

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The thermal treatment of wood can improve the appearance of the wood product’s surface, its dimensional stability, and resistance to fungal attacks. However, the heat treatment changes the technological properties of wood, making it a new engineering material. This work investigates the effect of the low-thermal treatment of birch wood (Betula pendula Roth.), European beech wood (Fagus sylvatica L.), and alder wood (Alnus glutinosa L.) on the fine dust particles creation during woodworking. The samples of thermally treated wood with temperatures commonly used for the change of wood colour (105, 125, and 135 °C) were compared with reference samples made of natural wood. All 12 variants of the tested woods were milled using the 5-axis CNC machining center (20 mm diamond cutter, rotational speed 18,000 rev·min−1, the depth of cut 3 mm, feed rates of 2, 4 and 6 m∙min−1). A sieving analysis method allowed measuring the dust particle size distributions in all dust samples. The experiment’s result analysis points out that wood type, thermal treatment, and feed rate meaningfully affect the size distribution of dust particles. Compared to birch wood and beech wood, the milling of alder wood samples created a much higher content of the finest dust particles, with particle sizes smaller than 0.032 mm. Increased temperatures in thermal treatment increase the share of fine dust particles with sizes smaller than 0.125 mm, compared to wood in its natural state. Milling with a lower feed rate (2 m·min−1) creates finer dust than processing with higher feed rates (4 and 6 m·min−1). Generally, the milling of alder in a natural or thermally treated state is a source of fine dust particles, particularly at low feed speed-rate milling, compared to birch and beech wood. In general, these results indicate that the low temperature thermal treatment parameters attribute new technological properties to all thermally modified types of wood tested.

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A comparative study of morphological characteristics of medium-density fiberboard dust by sieve and image analyses

Cited by 12 publications

References 25 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

N Evolution and Physiochemical Structure Changes in Chars during Co-Pyrolysis: Effects of Abundance of Glucose in Fiberboard

Effect of Low-Thermal Treatment on the Particle Size Distribution in Wood Dust after Milling

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