Simultaneous removal process of hydrogen sulfide and siloxanes and field application of iron hydroxide desulfurization agent for green hydrogen production from biogas

Biogas, one of renewable energies, is a key element necessary for carbon-neutral policy and to build hydrogen economy. In order utilize biogas, impurities biogas such as moisture, sulfide(H2S), siloxanes, VOCs should be removed. particular, since H2S causes corrosiveness equipment by sulfur oxides, harmful the human body if leaked, it major target material The minimum concentration obtainable from wet method several ppm. It known, however that iron hydroxide-based adsorbent in dry can obtain ultimately low down 0.1 ppm or less. DeHyS was manufactured through series processes mixing cloride solution sulfate solution, NaOH inorganic binder. During adsorption process, removed form sulfide chemical reaction, siloxanes are known physical adsorption. also applied various plant sites landfill gas, sewage sludge, livestock manure, food waste. At this time, removal efficiency 99.9% more, while simultaneous 90% more total possible. Moreover, produced at Chungju Food Bioenergy Center pretreated using supplied nearby Bio Green Hydrogen Charging Station produce steam methane reforming(SMR), producing 500 kg 8,000 m3 per day.