<![CDATA[Coffee is a very potential raw material when utilized in the form of solid fuel. Coffee husk is classified as an agricultural waste and its processing is made into artificial solid fuel used to replace alternative energy s ources expressed as briquettes. Th e research objectives expected in this study are to get the effect of variations in the particle size of raw materials and the percentage that glues well to the characteristics of the briquettes created, and to get the tre atment that produces briquettes wi th the best characteristics according to SNI. The experimental design in this research uses factorial RAK through 2 factors consisting of particle size with 3 levels (S1: 30 mesh, S2: 40 mesh, S3: 60 mesh) and the second f actor is the percentage of adhesiv e with 3 levels (L1: 30%, L2: 35%, L3: 40%). The combined design of the research trial through 2 trials obtained 18 trial units. The parameters observed in this research are water content, ash content, compressive strength , mass density, volatile matter, b ound carbon and combustion speed. The results showed that the interaction between particle size and percentage of coffee skin briquette adhesive contributed significantly to the quality parameters of the briquettes created . T he treatment of briquettes with a particle size of 60 mesh and a percentage of adhesive of 40% (S3L3) was declared the treatment that created the best quality briquettes. The briquettes from the S3L3 treatment had a moisture content of 4.43% ( bb ) , ash co nte nt of 4.69%, compressive strength of 202.81 kgf/cm 2 , mass density of 0.64 g/cm 3 , volatile matter of 53.68%, bound carbon value of 51.01%, and burning rate of 0.032 g/min]]>
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