Sewage Sludge Treatment

Algae-based enrichment of methane content in biogas – pilot scale study

Algae can be used for the biochemical separation of CO2 from digester gases. They convert CO2 into biomass and oxygen, thus enhancing the concentration of methane in the digester gas. The biomass can again be re-used to obtain biogas, thereby increasing the gas yield. The process is essentially relevant for gases with similar composition. 


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Source: German National Library of Science and Technology Hannover (TIB)