Low levels of silica were found in EFB, with values comparable to those in the literature and to those from other biomasses however, the values are higher than those from other palm oil wastes . In the present study, the low silica content in the EFB, in association with the reasonable presence of some inorganic compounds, such as MgO, Fe2O3, and Al2O3, effectively alleviated the agglomeration tendency of EFB during gasification, but the presence of CaO (12.5%) might possibly catalyze secondary reactions, causing an increase in hydrogen in the produced gas, because CaO is a CO2 adsorbent.