The characteristic of bio-pellet made from teak wood waste due to the influence of variations in material composition and compaction pressure

Abstract

Central Java and East Java are provinces in Indonesia which have the largest area of teak forest where management is in PERHUTANI. Teak trees can be cut down after reaching the age of 10 years or meet the minimum stem diameter required. Utilization of teak wood for the needs of building materials and furniture is very high because the material is of good quality. In processing teak tree trunks, there is waste from cutting that has not been maximized by PERHUTANI. With good quality teak wood, try to learn about the utilization of PERHUTANI teak wood waste powder for use as a bio-pellet that is included in the Renewable Energy (EBT) category so that they can improve their use and economic functions value. The bio-pellet quality reference standard refers to the SNI 8021:2014 standard. To make bio-pellets, flat die mill type machines are used with speeds of 1660 rpm. As an adhesive used cassava starch with a variation of 5%; 10%; 15% and water variations 10%; 15%; 20% by weight teak wood dust. Compaction pressure variations are obtained by adjusting the gap between the roller and die in the 0.5mm, 1mm and 1.5mm die holes. In research conducted content contained in teak wood pellets can meet SNI product standards. The five SNI standards obtained were bio-pellets having calorific values greater than 4000 calories/gram, bound carbon values ≥ 14%. Volatile matter content is less than ≤ 80%, ash content ≤ 1.5% and has a density of ≥ 0.8. This shows that bio-pellets from teak wood waste can be used for rural communities and can be developed for industrial purposes.