Production of biomass briquettes from septic tank at pilot scale

Production of biomass briquettes has been conducted at pilot plant scale. Briquettes are a material in the form of powder which are pressed using a machine mixed with adhesive so that they become a solid shape. The process for making briquettes is by adding polyacrylamide as adhesives. The process stages in making fecal briquettes are based on a predetermined procedure, there are several steps, starting from weighing the feces sludge, adhesive (polyacrylamide), water then stirring until printing or pressing, and heating the briquettes in the oven. The best briquettes are produced from sixteen (16) types of briquettes with the longest burning time of 613 seconds and a heating value of 7436.55 cal/g which is obtained from the ratio of raw material: adhesive, pressure scale, and drying time respectively 5 : 2; 105 kg/cm 2 ; and 120 minutes, with moisture content and density values respectively 7.27% and 1.06 gr/cm 2 . Where the moisture content and briquette value obtained have met SNI, namely ≥ 5000 Cal/g and 7.75%, respectively, in addition, the briquette density obtained has met the American standard, namely 1.0 gr/cm 3 .