Many researchers studied thermal decomposition of biomass by thermogravimetric analysis (TGA) to
gain better understanding of pyrolysis process in a well-controlled environment. Thermogravimetric
analysis (TGA) is the most common technique and is widely used for kinetic analysis of devolatilization
process. Numerous works has described TGA analysis and behaviour of various types of biomass during
thermal degradation. Biomass consists of three major components which are cellulose, hemicellulose and
lignin. The thermal degradation of each component occurs at different temperature by different pathways.
The objective of this study is to investigate the pyrolysis of Malaysia’s oil palm wastes such as oil palm
trunk (OPT) and empty fruit bunch (EFB) by thermogravimetric analyzer (TGA) at different heating rates
and biomass particle sizes. In addition, the thermal degradation of these biomasses also is studied.