Sago bark and sago pulp are biomass waste from the sago processing process that has not been optimally utilized. The high calorific value of sago bark and pulp, which is 4666.5 cal/gr and 4000 cal/gr, has the potential to be used as briquette fuel. This study aims to analyze the physical and combustion characteristics of briquettes mixed with sago bark and pulp, the concentration of PM2.5 from …