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

Parent Category: 2023

Wan Mohd Aznan, W. A.1*, Mohd Shahmihaizan, M. J.1 and Mohd Romainor, M.2

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.

Keywords: moisture content, particle size, bulk density, densification, rice husk pellet

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