H2S and water are produced during anaerobic digestion, therefore, the gas leaving the digester would be water saturated and this would be the ideal location for an adsorbent such as SULFURTRAP® EX. If the gas is treated downstream of the digester, after the water vapor is removed, then a dry gas adsorbent such as SULFURTRAP® […]
There are different adsorption methods to remove H2S from biogas: solid media, biological scrubbing or chemical scrubbing. Selecting the appropriate one depends on parameters such as flowrate and H2S concentration. In general terms, fixed iron bed solid media, such as SULFURTRAP® , are used for low flow rates and low H2S levels.
Hydrogen sulfide and water vapor will react during combustion forming corrosive sulfuric acid. Therefore, since a primary application of biogas is for use as a fuel that can be burned like natural gas, corrosive contaminants like H2S must be removed.
Biogas produced by anaerobic digestion of organic raw material can be obtained using various feedstocks (dairy manure, food waste and municipal solid waste). Therefore the gas composition can vary depending on the source, leading to different sulfur contaminants such as hydrogen sulfide, mercaptans and sulfur dioxide.
SULFURTRAP® EX is unique in its category not only due to the high purity and non-hazardous nature of the raw materials used in its production, but also due to its high flexibility or broad range of usage.
Due to its general non-hazardous characteristic, SULFURTRAP® EX can be disposed of in landfills following local and state regulations and should be qualified appropriately before final disposal. More details can be found in the SULFURTRAP® EX PDS and SDS.