Characteristics of Bio-oil from Sengon (Paraserianthes falcataria L. Nielsen)Sawdust by Slow Pyrolysis Process

Bio-oil is a dark-colored liquid fuels derived from biomass such as wood, bark and other biomass waste from forestry and forest products industry through pyrolysis technology. Bio-oil can be used in industries as a fuel for boilers or direct fuel for drying pur poses such as fuel oil. The pur pose of this study is to get information of production technology from sengon (Paraserianthes falcataria L. Nielsen) sawdust using slow pyrolysis. the sawdust was heated with limited air at temperature 350o-500oC in 30 - 60 minutes. The variables used in this study are temperature and duration of pyrolysis. The results showed that optimum bio-oil produced by treatment 500oC for 30 minutes, with the following characteristics; yields of liquid was 43.75% and bio-oil yields 7.95%, phenol 3.80, pH 2.84, specific gravity 1.116 g/cm3, heating value 22.42 MJ/kg and flame power was medium power. Bio-oil produced by thisprocess predominantly composed of acetic acid and phenols. In addition, there are several components that include combustible fuel i.e. 2-propanone (CAS) acetone, benzene, 1,2,4 trimethylbenzene, and 2-Furanmethanol (furfuryl alcohol).