Select microbes have the potential to convert CO2 to methane in a reaction with hydrogen. Such a process enables the utilization, rather than disposal, of CO2 separated from the biogas during the upgrading process.
The hydrogen for the reaction can be obtained from electrolysis of water. To ensure a low carbon footprint for the electrolysis, renewable electricity (such as solar power) is used for electrolysis.
01-08-2016
Source: Scientific American
01-05-2012
Source: US Dept of Energy
01-12-2017
Source: ResearchGate
01-02-2020
Source: Science Daily
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