Studies on Moisture Effects on Powder Flow and Mechanochemical Improvement of Powder Flowability

Opaliński, I.; Chutkowski, Marcin; Mateusz, Stasiak; Leś, Karolina; Marcin, Olechowski; Przywara, Mateusz

doi:10.12913/22998624/135395

Cited by 4 publications

(3 citation statements)

References 56 publications

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“…The investigations of the influence of the moisture content on the flowability of pulverized biomass are based on experimental data previously published by the authors of this manuscript [19,20]. The materials selected for the study were as follows: corn dried distillerʹs grains with solubles (DDGS) (5-600 µm) from the Goświnowice Ethanol Plant, Nysa, Poland; meat and bone meal (MBM) (150-2000 µm) from SARIA Sp.…”

Section: Methodsmentioning

confidence: 99%

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Numerical Investigation on Flowability of Pulverized Biomass Using the Swelling Bed Model

Przywara,

Zapała

2024

AgriEngineering

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Numerical investigations on the flowability of pulverized biomass are crucial for agriculture, aiding in optimizing biomass use, crop residue management, soil health improvement, and environmental impact mitigation. Rising interest in biomass and conversion processes necessitates deeper property understanding and technological process optimization. Moisture content is a key parameter influencing biomass quality. In this paper, computer simulations of shear tests depending on the moisture content using the discrete element method were carried out and compared with experimental results. An experimental study and modeling for Jenike’s direct shearing apparatus was carried out. A swelling bed model was proposed to account for the effect of moisture. The swelling bed model assumed an increase in biomass grain vorticity proportional to the moisture content. The model was solved using the discrete element method (DEM). The model considers the effect of moisture on the values of Young’s and Kirchoff’s moduli for biomass grains. The model assumed that moisture is not present in surface form, the total amount of moisture is absorbed into the interior of the material grains, and the volume of a single grain increases linearly with an increase in the volume of the absorbed moisture. The tested materials were pulverized sunflower husks, apple pomace, distiller’s dried grains with solubles (DDGS), meat and bone meal (MBM), and sawdust. Samples with moisture contents of 0%, 10%, 20%, and 30% were tested. The best agreement of the model with the experimental data was observed for the most absorbent materials in which moisture was not present in surface form, such as apple pomace, DDGS, and sawdust. Research data are important for the proper design of biomass storage, transportation equipment, and utilization as feedstock for bioenergy production or soil enrichment.

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Section: Methodsmentioning

confidence: 99%

“…The higher the line of the yield locus and the larger its angle of inclination, the worse the flowability of the material. Details of how to perform shear strength measurements with a Jenike apparatus and details of the sample preparation and characterization can be found in the authors' previously mentioned published papers [19,20].…”

Section: Methodsmentioning

confidence: 99%

Numerical Investigation on Flowability of Pulverized Biomass Using the Swelling Bed Model

Przywara,

Zapała

2024

AgriEngineering

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“…In order to improve this condition, adding excipients from various nature with higher particle size will improve in the cohesiveness of the powder. This will result in better handling and allow the powder processing to be easier [8,42,43].…”

Section: Introductionmentioning

confidence: 99%

Flowability Properties of Binary Powder Mixtures Containing Dates Powder (Pheonix Dactylifera) Mixed With Lactose Monohydrate and Microcrystalline Cellulose Based Excipients

Ahmad Hamidi,

Anuar,

Baharuddin

et al. 2023

AEJ

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Powder flow is important in powder processing industries to obtain a quality by design product and efficient manufacturing process. Poor powder flowability can cause problems especially during high speed tableting and capsule filling processes. In this study, dates powder (DP), lactose monohydrate powder, and two types of microcrystalline-based powder excipients evaluated for their flow properties as a binary mixture. Angle of repose (AoR), Hausner ratio (HR) and Carr index (CI) were used to characterize the extent of the powder cohesion. The results show that generally, as particle size increases, values of AoR generally decreases, depicting lower flowability characteristics with decreasing binary mixture particle size. However, HR and CI flowability indicators give contrasting flowability characteristics for the binary mixture containing lactose monohydrate and dates powder.

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Mechanical Properties of Solid Biomass as Affected by Moisture Content

Przywara

Zapała

et al. 2023

AgriEngineering

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The objective of the study was to examine the influence of moisture content on the mechanical properties of solid biomass, which is important for storage and handling. Mechanical properties involving powder flowability were determined with a Jenike shear tester. The materials tested were powdered biomass: sunflower husks, apple pomace, dried distillers grains with solubles (DDGS), and meat and bone meal. In static operations in which powdered biomass is generally under a significant load, such as in silos, moisture deteriorates the mechanical properties of biomass and increases its cohesion. In the case of DDGS, an additional slight decrease in stress was observed for samples with the highest moisture content, which was above 20%. For meat and bone meal and sunflower husks, a lubrication phenomenon was clearly observed, in which biomass samples with increased moisture content manifested better flowability, requiring lower boundary shear stresses than less moist samples. For apple pomace samples, with normal stresses above 50 kPa, the addition of moisture above 10% did not change the values of the observed shear stresses, indicating the stability of their properties. The use of powdered biomass with higher moisture contents, at above 10%, should be avoided, as such material can lead to overhangs in tanks and silos.

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Studies on Moisture Effects on Powder Flow and Mechanochemical Improvement of Powder Flowability

Cited by 4 publications

References 56 publications

Numerical Investigation on Flowability of Pulverized Biomass Using the Swelling Bed Model

Numerical Investigation on Flowability of Pulverized Biomass Using the Swelling Bed Model

Flowability Properties of Binary Powder Mixtures Containing Dates Powder (Pheonix Dactylifera) Mixed With Lactose Monohydrate and Microcrystalline Cellulose Based Excipients

Mechanical Properties of Solid Biomass as Affected by Moisture Content

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