Hello,
Rather than recycling CO2 of fossil origin for a second use which has the advantage of being inexpensive but often accompanied by fine particles that must be filtered, it is preferable to start from CO2 of atmospheric origin by using processes known as Direct Capture in the Atmosphere or DAC for Anglo-Saxons. The costs envisaged for the start of industrialization from 2025/2030 are of the order of 100 to 250 € / tonne, evolving towards 50 in 2050, which would make it possible to massively produce all kinds of synthetic hydrocarbons (including ethanol, methanol and its derivatives) at reasonable costs. In Europe, we have the Zurich-based start-up Climeworks, which has just completed its project in Iceland to bury CO2 in stable geological layers (Orca).
To produce green hydrogen at a lower cost, it turns out that solar energy is unbeatable, in the intertropical band at 1.5 € / kg from 2025/2030 and possibly at 0.6 / 0.75 in 2050.
All these cost evaluations have been made public by the scientific publications of the Technical University of Lappeenranta in recent years since 2016. Whatever the transformation processes to obtain the hydrocarbon molecules (algae, photocatalysis,
electrophotocatalysis, electrocatalysis, ... or even the old recipes of FT thermochemistry), it is at the initiative of the Germans who are the main leaders in trying to officially legalize the deduction of CO with the European authorities
2 non-fossil atmospheric according to various principles, including that of the circular economy ...
To discover the parallel universe of non-fossil synthetic fuels, take the time to browse (15 min) the NCSH website: