The influence of the thermal modification of pine (<i>Pinus sylvestris</i> L.) wood on the creation of fine dust particles in plane milling

Piernik, Magdalena; Rogoziński, Tomasz; Krauss, Andrzej; Pinkowski, Grzegorz

doi:10.1002/1348-9585.12075

Cited by 25 publications

(22 citation statements)

References 10 publications

(17 reference statements)

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“…Results associated with the particle percentage in individual mesh sieves, especially for oak, agree with the results mentioned by [38] for beech wood. The percentage of medium coarse fraction increased in modified beech wood compared to the coarse fraction of beech wood with feed rate.…”

Section: Tree Speciessupporting

confidence: 88%

“…However a considerable amount of fine dust are produced under the same processing conditions in the case of machining thermally modified wood when compared to the case of unmodified wood. This result was confirmed in the case of wood sawing [20,38,39] and in the case of wood cutting [40,41]. Also the effect of thermal modification on forming particles or dust must be investigated, either in terms of further utilization or in terms of assessing the health and safety risk [42][43][44][45].…”

Section: Introductionmentioning

confidence: 86%

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Occupational Exposure to Dust Produced when Milling Thermally Modified Wood

Očkajová

Kučerka

Kminiak

et al. 2020

IJERPH

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During production, thermally modified wood is processed using the same machining operations as unmodified wood. Machining wood is always accompanied with the creation of dust particles. The smaller they become, the more hazardous they are. Employees are exposed to a greater health hazard when machining thermally modified wood because a considerable amount of fine dust is produced under the same processing conditions than in the case of unmodified wood. The International Agency for Research on Cancer (IARC) states that wood dust causes cancer of the nasal cavity and paranasal sinuses and of the nasopharynx. Wood dust is also associated with toxic effects, irritation of the eyes, nose and throat, dermatitis, and respiratory system effects which include decreased lung capacity, chronic obstructive pulmonary disease, asthma and allergic reactions. In our research, granular composition of particles resulting from the process of longitudinal milling of heat-treated oak and spruce wood under variable conditions (i.e., the temperature of modification of 160, 180, 200 and 220 °C and feed rate of 6, 10 and 15 m.min−1) are presented in the paper. Sieve analysis was used to determine the granular composition of particles. An increase in fine particle fraction when the temperature of modification rises was confirmed by the research. This can be due to the lower strength of thermally modified wood. Moreover, a different effect of the temperature modification on granularity due to the tree species was observed. In the case of oak wood, changes occurred at a temperature of 160 °C and in the case of spruce wood, changes occurred at the temperatures of 200 and 220 °C. At the temperatures of modification of 200 and 220 °C, the dust fraction (i.e., that occurred in the mesh sieves, particles with the size ≤ 0.08 mm) ranged from 2.99% (oak wood, feed rate of 10 m.min−1) to 8.07% (spruce wood, feed rate of 6 m.min−1). Such particles might have a harmful effect on employee health in wood-processing facilities.

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Section: Tree Speciessupporting

confidence: 88%

Section: Introductionmentioning

confidence: 86%

Occupational Exposure to Dust Produced when Milling Thermally Modified Wood

Očkajová

Kučerka

Kminiak

et al. 2020

IJERPH

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“…During wood processing, dust is created as a by-product [1][2][3][4][5][6][7], and plays a negative role in assessing the risk of fire [8] or explosion [9][10][11][12][13][14]. Wood fust also poses a significant risk to the health of the human body [15,16].…”

Section: Introductionmentioning

confidence: 99%

Tropical Wood Dusts—Granulometry, Morfology and Ignition Temperature

et al. 2020

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The article considers the granulometric analysis of selected samples of tropical wood dust from cumaru (Dipteryx odorata), padauk (Pterocarpus soyauxii), ebony (Diospyros crassiflora), and marblewood (Marmaroxylon racemosum) using a Makita 9556CR 1400 W grinder and K36 sandpaper, for the purpose of selecting the percentages of the various fractions (<63; 63; 71; 200; 315; 500 μm) of wood dust samples. Tropical wood dust samples were made using a hand orbital sander Makita 9556CR 1400 W, and sized using the automatic mesh vibratory sieve machine Retsch AS 200 control. Most dust particles (between 50–79%) from all wood samples were under 100 μm in size. This higher percentage is associated with the risk of inhaling the dust, causing damage to the respiratory system, and the risk of a dust-air explosive mixture. Results of granulometric fractions contribution of tropical woods sanding dust were similar. Ignition temperature was changed by particle sizes, and decreased with a decrease in particle sizes. We found that marblewood has the highest minimum ignition temperature (400–420 °C), and padauk has the lowest (370–390 °C).

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“…Determination of the content of the smallest dust particles in sawdust was carried out in accordance with the methodology previously described by Rogoziński et al (2015Rogoziński et al ( , 2017, Hlásková et al (2016), and Piernik et al (2019). This methodology contains two complementary methods to determine…”

Section: Wood Dust Particle Size Analysismentioning

confidence: 99%

Influence of drying mode and feed per tooth rate on the fine dust creation in pine and beech sawing on a mini sash gang saw

et al. 2020

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The experimental results of the study focused on the effect of drying processes of modified air drying and warm air-steam mixture drying of pine and beech wood on the size of sawdust particles created in cutting using PRW-15M sash gang saw, are presented in the paper. Particle size analysis of dry sawdust was performed using two methods—sieving method and laser diffraction analysis. The results showed that the drying process did not affect the general particle size distribution of the sawdust, but the content of very fine dust particles in beech wood sawdust is many times higher when the beech wood was dried in the warm air-steam mixture drying process and sawn at a feed per tooth of 0.105 mm.

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The influence of the thermal modification of pine (Pinus sylvestris L.) wood on the creation of fine dust particles in plane milling

Cited by 25 publications

References 10 publications

Occupational Exposure to Dust Produced when Milling Thermally Modified Wood

Occupational Exposure to Dust Produced when Milling Thermally Modified Wood

Tropical Wood Dusts—Granulometry, Morfology and Ignition Temperature

Influence of drying mode and feed per tooth rate on the fine dust creation in pine and beech sawing on a mini sash gang saw

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