Methanogenesis
 
Entstehung von Methan aus CO2 und H2
 
Wikipedia :
Methanogenesis or biomethanation is the formation of methane by microbes known as methanogens.
CO2 + 4 H2 → CH4 + 2H2O
 

Studie Methanogenesis CO2 Methan Herstellung

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Caltech Methanogenesis
 

 
 
 

 
 

Wikipedia http://en.wikipedia.org/wiki/Methanogenesis   Methanogenesis or biomethanation is the formation of methane by microbes known as methanogens. CO2 + 4 H2 → CH4 + 2H2O CH3COOH → CH4 + CO2
The chemical biology of methanogenesis Two distinct pathways account for most of the CH4produced in the majority of the diverse and vast anaerobic environments of Earth’s biosphere by microbes that are classified in theArchaeadomain of life: conversion of the methyl group of acetate to CH4in the aceticlastic pathway and reduction of CO2with electrons derived from H2, formate or CO in the CO2reduction pathway @Sciencedirect Methanogenesis
@Methanogenesis
Angelfire 5. If possible, there is a natural process called methanogenesis by which hydrogen (from steps 1, 2 and 3) and CO2 become methane and water: CO2 + 4 H2 => CH4 + 2H2O   It might be best to stick to the hydrogen. At least for clean aviation.