Optimization Study of H2/CO Ratio in the Steam Gasification of PKS using Coal Bottom ash for fuel Production through Response Surface Methodology

H-2 and CO are the most critical components within the product gas obtained from the gasification of biomass. The composition of H-2 and CO is of significant importance as their ratio defines the utilization of the syngas. Application of syngas can include power generation, chemical products such as methanol, NH3, and FT diesel. The objective of this study to optimize the parametric conditions for H-2/CO ratio in the gasification of PKS in TGA-MS set up using coal bottom ash as a catalyst and CaO as adsorbent. The experiments were designed using RSM and the effect of parameters such as temperature from (650-750 degrees C), particle size (0.5-1.0 mm), CaO/biomass ratio (0.5-2.0), and CBA wt % (0.02-0.10). The study demonstrates that the H-2/CO ratio is mostly influenced factor followed by the temperature and particle size, whereas the CaO/biomass ratio and CBA wt% are third and fourth influencing factors on H-2/CO ratio. The maximum H-2/CO ratio of 1.47 at optimum temperature of 715 degrees C, Particle size of 0.65 mm, CaO/biomass ratio of 1.45, and CBA wt % of 0.09%. H-2/CO ratio is important for its conversion into many products, such as methane, methanol, and FT diesel.