The influence of moisture content and raw material size on the mechanical and calorific properties of rice husk pellets

Wan Mohd Aznan W. A., . and Mohd Shahmihaizan M. J., . and Mohd Romainor M., . (2023) The influence of moisture content and raw material size on the mechanical and calorific properties of rice husk pellets. Journal of Tropical Agriculture and Food Science (Malaysia), 51 (2). pp. 61-66. ISSN 1394-9829

Utilisation of the biomass pellets to generate heat is an alternative source of energy from renewable resources. Rice husk (RH) is biomass that was produced as a by-product from rice mill and has a great potential to be used as an energy feedstock. Nevertheless, the low bulk density (BD) and inconsistent moisture content (MC) of the RH have affected its potential application. Therefore, this study aims to investigate the effects on MC and particle size (PS) of pellet’s compound on the quality of RH pellets. The BD, compression strength (CS) and gross calorific value (GCV) of the RH pellets were significantly influenced by the MC of pellet’s compound. Particle size of the pellet’s compound was not displayed a significant effect in this study unless for CS of the pellets. The range of results for the BD, CS, and GCV were 610 to 687 kg/m³, 3372 to 7087 kN/m² and 14,828 to 15,204 J/g respectively. Combination of the pellet’s compound at 12% MC and 6 mm PS has produced the best quality of RH pellet.

Full text available from: Official URL: http://jtafs.mardi.gov.my/jtafs/51-2/JTAFS_Wan%20M...

Abstract

Utilisation of the biomass pellets to generate heat is an alternative source of energy from renewable resources. Rice husk (RH) is biomass that was produced as a by-product from rice mill and has a great potential to be used as an energy feedstock. Nevertheless, the low bulk density (BD) and inconsistent moisture content (MC) of the RH have affected its potential application. Therefore, this study aims to investigate the effects on MC and particle size (PS) of pellet’s compound on the quality of RH pellets. The BD, compression strength (CS) and gross calorific value (GCV) of the RH pellets were significantly influenced by the MC of pellet’s compound. Particle size of the pellet’s compound was not displayed a significant effect in this study unless for CS of the pellets. The range of results for the BD, CS, and GCV were 610 to 687 kg/m³, 3372 to 7087 kN/m² and 14,828 to 15,204 J/g respectively. Combination of the pellet’s compound at 12% MC and 6 mm PS has produced the best quality of RH pellet.

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Item Type:	Article
AGROVOC Term:	rice husks
AGROVOC Term:	renewable energy
AGROVOC Term:	mechanical properties
AGROVOC Term:	energy value
AGROVOC Term:	biofuels
AGROVOC Term:	moisture content
AGROVOC Term:	product quality
Geographical Term:	Malaysia
Depositing User:	Ms. Azariah Hashim
Date Deposited:	15 Nov 2025 14:45
Last Modified:	03 Feb 2026 03:48
URI:	http://webagris.upm.edu.my/id/eprint/1590

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