Influence of Moisture Content and Composition of Agricultural Waste with Hard Coal Mixtures on Mechanical and Rheological Properties

Przywara, Mateusz; Przywara, Regina; Chutkowski, Marcin; Zapała, Wojciech; Opaliński, I.

doi:10.3390/agriengineering5010028

Cited by 3 publications

(1 citation statement)

References 38 publications

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“…The variations in the ash and moisture composition percentages of both shells are not statistically significant and it is noteworthy that their values depend on post-harvest handling and storage conditions [24,25]. However, the low ash and moisture content of the substrates is an added advantage, especially during thermochemical conversion.…”

Section: Determination Of Moisture Content Ash Extractive Structural ...mentioning

confidence: 91%

Chemical, Thermogravimetric and Elemental Characterization of Nigerian Groundnut and Cowpea Shells for Sustainable Valorization

Mary Onyelucheya,

Tagbo Nwabanne,

Olawale Daramola

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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In this study, the chemical, thermogravimetric, and elemental composition of Nigerian groundnut (Arachis hypogaea L.) and cowpea shells (Vigna unguiculata) were investigated to understand their potential as valuable waste resources. Analysis of the carbohydrates and lignin content was performed using the National Renewable Energy Laboratory method. Fourier transform infrared (FTIR) spectroscopy was used to determine the chemical structure of the substrates. Elemental analysis was performed using X-ray fluorescence (XRF) and an elemental analyzer to determine the carbon, hydrogen, nitrogen, and sulphur. In addition, thermogravimetric analysis was used to assess the thermal stability of the substrates. The chemical composition analysis revealed that the cowpea shells contain 21.32% cellulose, 21.46% hemicellulose, and 28.37% lignin. On the other hand, groundnut shells comprise 26.31% cellulose, 19.5% hemicellulose, and 38.33% lignin. The XRF results indicated the presence of significant elemental compositions in both substrates, including Si, Al, Mg, Na, P, Fe, K, Ca, and S. The carbon content of both substrates was found to be 43%. Thermogravimetric analysis revealed that groundnut shells exhibit a higher cellulose decomposition temperature at 350 °C, whereas cowpea shells manifest this phenomenon at 322 °C. The results show that the cowpea shells had a higher heating value as they exceeded that of the groundnut shell by 0.89 per cent. These comprehensive findings show the substantial potential of Nigerian groundnut and cowpea shells as valuable waste materials, which can be effectively used to produce valuable products such as bioethanol, biochemicals, biochar, and bio-composite materials. This research contributes to understanding the composition and properties of these agricultural by-products, thus paving the way for their sustainable use in various industrial applications.

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Section: Determination Of Moisture Content Ash Extractive Structural ...mentioning

confidence: 91%

Chemical, Thermogravimetric and Elemental Characterization of Nigerian Groundnut and Cowpea Shells for Sustainable Valorization

Mary Onyelucheya,

Tagbo Nwabanne,

Olawale Daramola

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Potential Exploitation of Agro-Industrial Waste

Rana,

Thapliyal

et al. 2024

From Waste to Wealth

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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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Influence of Moisture Content and Composition of Agricultural Waste with Hard Coal Mixtures on Mechanical and Rheological Properties

Cited by 3 publications

References 38 publications

Chemical, Thermogravimetric and Elemental Characterization of Nigerian Groundnut and Cowpea Shells for Sustainable Valorization

Chemical, Thermogravimetric and Elemental Characterization of Nigerian Groundnut and Cowpea Shells for Sustainable Valorization

Potential Exploitation of Agro-Industrial Waste

Mechanical Properties of Solid Biomass as Affected by Moisture Content

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