Slow Pyrolysis of Tectona Grandis and Albizia Chinensis Sawdust with Thermogravimetry Analysis

摘要

Sawdust waste has a great potential to be developed into alternative energy in Indonesia. It has varying methods to process it into certain products, e.g., pyrolysis process. However, the sawdust pyrolysis process still not very popular, especially not so many people understand its thermal characteristics. In this study, thermogravimetry analysis was carried out to analysis three samples of sawdust, i.e., Tectona Grandis Sawdust, Albizia Chinensis Sawdust, and the mixture of both sawdust. This research was conducted to obtain pyrolysis characteristics, including devolatilization profiles and kinetic energy. This study used three samples each has a mass of 20 grams. Each sample is heated in a furnace with a heating rate of 15°C/min until the temperature reaches 600° C and hold it for 10 minutes. During the data retrieval, the furnace flowed with nitrogen, thus the condition of no oxygen is present in the reactor. The results of this study indicate that the mixture of Tectona Grandis and Albizia Chinensis has the highest activation energy value of all pyrolysis samples with 80.79 kJ/mol.