Methanation of hydrogen and carbon dioxide
暂无分享,去创建一个
A new method for the methanation of hydrogen and carbon dioxide is presented. In a novel anaerobic trickle-bed reactor, biochemical catalyzed methanation at mesophilic temperatures and ambient pressure can be realized. The conversion of gaseous substrates by immobilized hydrogenotrophic methanogens is a unique feature of this reactor type. The already patented reactor produces biogas which has a very high quality (cCH4=97.9vol%). Therefore, the storage of biogas in the existing natural gas grid is possible without extensive purification. The specific methane production was measured with P=1.17NmCH43/(mR3d). It is conceivable to realize the process at sites that generate solar or wind energy and sites subject to the conditions for hydrogen electrolysis (or other methods of hydrogen production). The combination with conventional biogas plants under hydrogen addition to methane enrichment is possible as well. The process enables the coupling of various renewable energy sources.
[1] B. Demirel,et al. The roles of acetotrophic and hydrogenotrophic methanogens during anaerobic conversion of biomass to methane: a review , 2008 .
[2] C. Grima-Olmedo,et al. Energetic performance of landfill and digester biogas in a domestic cooker , 2014 .
[3] R. Samudrala,et al. Comprehensive computational analysis of Hmd enzymes and paralogs in methanogenic Archaea , 2009, BMC Evolutionary Biology.
[4] H. Sahm. Biologie der Methan‐Bildung , 1981 .