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Sawdust

About: Sawdust is a research topic. Over the lifetime, 5526 publications have been published within this topic receiving 86499 citations. The topic is also known as: wood dust & hard wood dust.


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Journal ArticleDOI
TL;DR: In this paper, the potential of lignocellulosic fillers such as flour of rice hull, wood saw dust, sanding flour from Medium Density Fiberboard (MDF), and sawdust from particleboard as reinforcement for recycled high density polyethylene.
Abstract: The aim of the research was to study the potential of lignocellulosic fillers such as flour of rice hull, wood saw dust, sanding flour from Medium Density Fiberboard (MDF), and sawdust from particleboard as reinforcement for recycled high density polyethylene. Natural filler HDPE composites were made from recycled HDPE and lignocellulosic fillers at 60% by weight filler loadings using a dry blend/hot press method. In all compounds 3 per hundred compound (phc) Maleic Anhydride Polyethylene (MAPE) was used. Nominal density and dimensions of the panels were 1g/cm3 and 35×35×1 cm. Physical properties of panels including short and long-term of water absorption and thickness swelling and mechanical properties, including flexural modulus, flexural strength, strain at yield, and energy to yield point were studied. Composites containing sanding flour from MDF showed higher short-term values of water absorption and thickness swelling. For the long term, such as maximum values of water absorption and thickness swelling and diffusion coefficient, composites including wood sawdust showed higher values, and composites contain rice hulls exhibited the lowest values. In addition, composites made from sanding flour from MDF showed high value of the swelling rate parameter. Water absorption behavior of studied composites followed Fick's model. The flexural properties of composites were investigated with reference to the effect of filler type. Composites containing sanding flour from MDF and particleboard sawdust exhibited better flexural properties than others and composites containing wood sawdust showed the lowest values.

33 citations

Journal ArticleDOI
30 Sep 2019-Forests
TL;DR: The results of measurements of the pH value using the contact method on the wood surface showed that this method can be used in the case of coniferous as well as broadleaved trees with heartwood, and great dependence of measured values on the conditions of wood extraction.
Abstract: A direct method of measuring the pH value of wood substance is proposed in the paper. The achieved results were completed by determining the pH value on the wood surface using the contact method. Moreover, the results were compared to the results achieved using the indirect methods to determine the pH value in cold water, as well as hot water, extract of wood. Using the direct method for measuring the pH value in drilled fresh sawdust, the pH value of beech was 5.11, of birch was 5.29, of alder was 4.88, and of maple was 4.65. Following the achieved results, the possibility to measure the pH value using a fast, accurate method useful in practice complying with the condition of the minimum free water in wood (moisture content of wood above the fibre saturation point) was presented. The results of measurements of the pH value using the contact method on the wood surface showed that this method can be used in the case of coniferous as well as broadleaved trees with heartwood. The value of pH measured on the surface of pine was 4.50, of spruce was 4.79, of the heartwood of oak was 3.46, and of the sapwood of oak 5.04. The measurement of pH values of water extracts confirmed great dependence of measured values on the conditions of wood extraction.

33 citations

Journal ArticleDOI
TL;DR: In this paper, the thermal degradation behavior of sawdust under N 2 and O 2 environments was investigated to derive the kinetics parameters, and it was found that the activation energy of both pyrolysis and oxycombustion were different from previous studies.

33 citations

Journal ArticleDOI
TL;DR: In this article, the authors used Pinus caribaea sawdust with CO2 and steam as activating agents, and showed that the characteristics of these activated carbons are comparable to those used as commercial adsorbents in those fields, showing in the case of steam-activated carbons, a somewhat higher mesopore volume than many of the commercial products.
Abstract: Activated carbons with different porous structures have been prepared from Pinus caribaea sawdust through the use of CO2 and steam as activating agents. The evolution of the Brunauer-Emmett-Teller (BET) surface area upon activation becomes fairly similar in both cases, and values above 1000 m2/g can be reached at high burn-off levels. Activation with steam produces a more developed porous structure, with a substantially higher contribution of mesoporosity, than does activation with CO2. Increasing the activation temperature leads in both cases to a wide pore-size distribution. The presence of a well-developed mesoporosity makes the resulting products good candidates for adsorbents for water and waste-water treatment. For these purposes, the characteristics of these activated carbons are comparable to those used as commercial adsorbents in those fields, showing in the case of the steam-activated carbons, a somewhat higher mesopore volume than many of the commercial products while maintaining similar surfac...

33 citations

Journal ArticleDOI
TL;DR: In this paper, Japanese cedar sawdust was pyrolyzed in a bubbling fluidized-bed reactor to study the effects of condensers with and without spraying and different fluidizing gases on product yields.
Abstract: Japanese cedar sawdust was pyrolyzed in a bubbling fluidized-bed reactor to study the effects of condensers with and without spraying and the different fluidizing gases on product yields. The temperature in the condenser affected the bio-oil yield and composition. Test results showed that the condenser with spraying had a lower temperature, preventing vapor and liquid phases in the condenser from being further reacted and increasing the bio-oil yield. The pyrolysis vapors were condensed to bio-oil according to the various boiling points and condensation methods of the vapors. The condenser with spraying separated bio-oil into an oily portion rich in phenolic compounds with high boiling points and an aqueous portion rich in moisture with low boiling points. Sawdust pyrolyzed in pyrolysis gas or nitrogen gas also affected the product yields. Sawdust pyrolyzed in pyrolysis gas increased the bio-oil yield and the concentrations of H2, CO, and CH4 combustible gases in the gas phase. When the sawdust was pyroly...

33 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023443
2022827
2021331
2020323
2019383
2018334