Biomass gasification produces synthesis gas, however, there is a need for purification technologies to remove the contaminant H2S (Hydrogen Sulphide), the most common sulfur-containing compound found in fossil fuels and chemical synthesis gas. It can lead to environmental pollution, cause significant operational problems in thermochemical conversion plants by damaging pipes and equipment, and is known as a deactivator or fast poison in most metal oxide catalysts used in the petrochemical and chemical industries, or in the control of CO and NOx emitted. in automotive exhausts. One of the purification technologies is adsorption. The doping and characterization of 6 sugarcane bagasse ash adsorbents were applied for this purpose, due to their high surface area, pore distribution and porous characteristic.