Syngas biomethanation in a trickle bed reactor

Despite the efforts of the global policy makers to reduce the emissions of greenhouse gases through a transition to a biobased and circular economy, the concentration of CO2 in the atmosphere has exceeded 400 ppm and keeps increasing in a fast pace.As a result, it is urgent to establish new technologies that will allow the recycle of waste carbon and prevent its release to the environment.Such a source of carbon is the flue gas produced from the gasification of biomass which contains primarily CO, CO2 and H2.This gaseous mixture is broadly known as synthesis gas or syngas and constitutes a substrate for the production of CH4 through the Sabatier process or other longer carbon chain molecules through the Fischer -Tropsch process.These catalytic processes face important challenges such as the cost of the catalysts and the high temperature and pressure demanded.