Topic
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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TL;DR: In this article, the application of the Langmuir and Freundlich models for the data was tested and the sorption capacities and energies of nickel ions on sawdust of Dalbergia sissoo was calculated.
Abstract: Sawdust of Dalbergia sissoo, a byproduct of sawmills, was found to be a promising adsorbent for the removal of nickel ions from aqueous solution. Sorption of nickel ions onto sawdust of Dalbergia sissoo was studied using the batch technique. Kinetics studies show that nickel ions sorption process obeys a first order rate law. The applicability of the Langmuir and Freundlich models for the data was tested. Both the models adequately describe the experimental data of the biosorption of nickel ions. The sorption capacities and energies were calculated. Langmuir parameters X m and K 1 were found to increase with rise in temperature; Freundlich constants 1/n and K f have been evaluated for 293K, 303K, 313K and 323K. Thermodynamic parameter AH° = 4.80 kJ mol -1 shows that sorption of nickel ions onto sawdust is an endothermic process.
77 citations
TL;DR: In this article, the effect of the moisture content on the compressive strength and the shatter index of the briquette samples from pulping reject and spruce wood sawdust were studied.
Abstract: In this study, some briquetting properties such as moisture content, shatter index, compressive strength, water resistance, heating value, and combustion of briquettes from pulping reject and spruce wood sawdust were determined. The strongest briquettes (shatter index 20500, compressive strength 49.5 MPa) produced using spruce wood sawdust were achieved with a moisture content of 15% at a briquetting pressure of 350 MPa. The effect of the moisture content on the compressive strength and the shatter index of the briquette samples from pulping reject and spruce sawdust were studied. The results suggest that as the moisture content of the briquette samples increased significantly, the compressive strength and shatter index of the briquettes also increased.
77 citations
TL;DR: In this paper, the use of an adsorption column makes the process continuous, so that it is economically viable on an industrial scale, and no loss in adorption power was observed.
Abstract: Cellulosic materials, namely bleached bamboo pulp, jute fibers, and sawdust dyed with a reactive dye of monochlorotriazine type were used in the column studies for removal of different metal ions. The use of an adsorption column makes the process continuous, so that it is economically viable on an industrial scale. After the adsorption of metal ions such as Cu2+, Pb2+, Hg2+, Fe2+, Fe3+, Zn2+ and Ni2+, the adsorbents were successfully regenerated by using dilute acids. These columns were then used repeatedly for adsorption either of the same salt for more than ten times or of different salts in succession. No loss in adsorption power was observed.
76 citations
Journal Article•
TL;DR: In this article, the physical characteristics of sawdust relative to its use as an adsorbent for removal of an acid dye (Orange G) from aqueous solutions were investigated.
Abstract: The present paper aims to investigate the physical characteristics of sawdust relative to its use as an adsorbent for removal of an acid dye (Orange G) from aqueous solutions. The raw sawdust was sieved to have a uniform size and was activated by sulphuric acid by refluxing the content at 60 oC for 4 h. Surface morphology and surface functional groups of both raw and modified sawdust samples were investigated by Scanning Electron Microscope (SEM), Energy Dispersive X-ray Analysis (EDX), Fourier Transformation Infrared (FTIR), and elemental analysis. All these analyses displayed significant change in the structure of the sawdust. The data obtained from batch adsorption experiments for the removal of the selected dye confirmed that adsorption characteristics of the modified sawdust were better than those of raw sawdust.
75 citations
TL;DR: In this article, the porosity of the carbons can be tailored towards being predominantly microporous, which generates adsorbents that exhibit very attractive CO2 uptake at 1 bar and 25 o C.
Abstract: This work offers a new, and simpler, method for the carbonisation of biomass that involves flash carbonisation of biomass at relatively low temperature (< 400 o C). We successfully converted the biomass precursor (eucalyptus sawdust) to carbonaceous matter via flash heating for a short period of time (5 –10 minutes) under a flow of air. On activation, the flash carbonized carbon offers high yields of activated carbons with higher microporosity compared to sawdust derived activated carbons prepared via hydrothermal carbonization or conventional pyrolysis. Depending on the level of activation, the flash carbonized sawdust-derived activated carbons retain some ‘woody’ morphology preserved from the sawdust. The porosity of the carbons can be tailored towards being predominantly microporous, which generates adsorbents that exhibit very attractive CO2 uptake (up to 5.0 mmol g-1) at 1 bar and 25 o C. Moreover, depending on the level of activation, it is possible to tailor the porosity of the carbons such that they simultaneously exhibit high post combustion (< 1 bar) and pre-combustion (20 bar) CO2 capture capability. The carbons exhibit exceptional performance for low pressure swing adsorption (PSA) with working capacity of up to 8.3 mmol g-1 for a pure CO2 stream (6 to 1 bar) and up to 5.6 mmol g-1 for flue gas (1.2 to 0.2 bar), while the working capacity for vacuum swing adsorption (VSA) reaches 5.3 mmol g-1 under pure CO2 (1.5 to 0.05 bar), and 2.1 mmol g-1 for flue gas (0.3 to 0.01 bar) conditions.
75 citations