<![CDATA[The increasing demand for energy and depletion of fossil fuel reserves have encouraged the development of renewable alternative fuels, including biomass briquettes made from agricultural and industrial waste. Coconut shell charcoal and mahogany sawdust are potential raw materials for briquette production because of their availability and energy content. This study investigated the effects of raw material composition on briquette combustion characteristics. Briquettes were produced using coconut shell charcoal-to-mahogany sawdust ratios of 30:70, 50:50, and 70:30 and tested for combustion rate, density, and calorific value. The results showed that the 70:30 composition had the highest reported combustion rate of 1.7232 g/min. The calorific values ranged from 1782.27 to 2123.184 J, with the highest value obtained at the highest coconut shell charcoal proportion. These findings indicate that raw material composition influences briquette performance, particularly combustion rate and calorific value. The 70:30 ratio was identified as the optimum composition based on the reported results. However, further clarification of the combustion-rate measurements and calorific-value units is needed to support this conclusion and enable comparison with established biomass fuel standards.]]>
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