Detailed modeling of solids separation by microsieving in a rotating belt filter: explicit effect of particle size, mesh size, and polymer dose

Abstract The present investigation was aimed to observe the effect of particle size on physical, sensory and thermal properties of foam-mat dried mango pulp powder. Mango pulp of Dussehri variety was foam-mat dried using 3% egg white at 65ºC. Dried foam-mats were pulverized and passed through a sieve shaker for obtaining three grades of powder with 50, 60, and 85 mesh size sieves. The particle size of these samples measured using laser diffraction particle size analyzer ranged from 191.26 to 296.19 μm. The data was analysed statistically using ANOVA of SAS. There was a linear increase in lightness (‘L’ value) with a decrease in particle size, however, ‘a’ value decreased with a decrease in particle size, indicating the decrease in redness. An increase in bulk density and decrease in water solubility index and water absorption index % were observed with a decrease in particle size. Particle size had a significant effect on sensory parameters. Particle size in the range of 258.01 to 264.60μmwas found most acceptable with respect to sensory characteristics. This finding can be exploited for various commercial applicationswhere powder quality is dependent on the particle size and has foremost priority for end users.

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Coupled effect of particle size of the source materials and calcination temperature on the direct synthesis of hydroxyapatite

Royal Society Open Science ◽

10.1098/rsos.210684 ◽

2021 ◽

Vol 8 (9) ◽

pp. 210684

Author(s):

Md. Sahadat Hossain ◽

Monika Mahmud ◽

Sazia Sultana ◽

Mashrafi Bin Mobarak ◽

M. Saiful Islam ◽

...

Keyword(s):

Particle Size ◽

Calcination Temperature ◽

Direct Synthesis ◽

Mesh Size ◽

Secondary Phase ◽

Carbonate Content ◽

Carbonated Apatite ◽

Infrared Spectrophotometer ◽

Effect Of Particle Size ◽

Source Materials

We report the effect of controlled particle size (obtained by using 80, 100, 120, 140 and 200 mesh) of the source materials on the synthesis of a well-known biomaterial, hydroxyapatite (Hap). In addition to this, we have also mapped the consequence of applied temperature (700°C, 800°C and 900°C) on the crystallographic properties and phase composition of the obtained Hap. Nevertheless, although with Hap, in each case, β-tricalcium phosphate (β-TCP) was registered as the secondary phase the ANOVA test revealed that the results of the crystallographic parameters are significantly different for the applied sintering temperature 700°C and 800°C ( p < 0.05), while the data obtained for calcination temperature 800°C are not significantly different from that acquired at 900°C ( p > 0.05). Fourier transform infrared spectrophotometer data ensured that, irrespective of mesh size and calcination temperature, the synthesized Hap samples were of carbonated apatite with B-type substitution. Interestingly, for all cases, the % of carbonate content was below the maximum limit (8%) of the CO 3 2 − ion present in bone tissue hydroxyapatite.

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Particle Size Effect on FeS Spontaneous Combustion Characters in Petroleum

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.608-609.971 ◽

2014 ◽

Vol 608-609 ◽

pp. 971-975

Author(s):

Man Yang ◽

Xian Feng Chen ◽

Yu Jiao Shang ◽

Ren Dong Bao

Keyword(s):

Activation Energy ◽

Particle Size ◽

Reaction Mechanisms ◽

Spontaneous Combustion ◽

Oxidation Kinetic ◽

Mesh Size ◽

Particle Size Effect ◽

Particle Sizes ◽

Heating Rates ◽

Effect Of Particle Size

In order to evaluate the effect of particle size on FeS Spontaneous Combustion Characters, four different grain diameters of FeS particles (100, 170, 220, 320-mesh) were detected in the experiment. The reaction process at heating rates of 5°C /min in air flow from 30°C to 900°C were studied by TG-DSC and oxidation kinetic analysis. The activation energies of samples were calculated by the Coats-Redfern method. It is found that four reaction mechanisms are involved in FeS spontaneous combustion for different particle sizes; the activation energy values change from 307.4 to 398.05 kJ/mol; larger size particles have higher activation energy values; so grain diameters larger than 100-mesh size samples are less inclined to be oxidized and self-ignited.

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