Remundo wrote:I hear your comments.
nevertheless, the technique still seems to consume a lot of electricity in relation to the liters of fuel produced. that will necessarily count too.
Especially since there is not only this electrolysis technique to have the syngas.
The more traditional techniques of gasification / thermolysis of organic materials also provide syngas. They will be in competition, and in Europe, the organic matter resource is important.
projects of large international solar structures in the south have already collapsed for geopolitical reasons. We will have to bring CO2 to these regions ... or pull the HVDC power lines to Europe ...
Let it be understood that the CO2-H2O electrolysis technique can also find its place, in particular when leaving a plant that produces a lot of "fatal" CO2.
Sorry for the delay in answering these questions.
Unfortunately, the fuels obtained from hydrocarbon sources starting from Biomass-Energy no longer have the same future prospects as they had during the past decades.
Despite the perseverance of many teams around the world to overcome development obstacles (including in France, see the “Connaissance des Energies” website), it seems that production costs cannot fall below 1.5 at 2 € per liter.
The uses of biomass are still more and more important, without even mentioning Chinese imports, yet vegetation, trees, energy crops in Europe (with the exception of sorghum of tropical origin) are increasingly suffering from climate change. Productivities stagnate.
The efficiency of the conversion of solar energy by photosynthesis does not exceed 0.5 to 2%, against 20 to 25% for "artificial solutions" of photovoltaic or other type. This makes it possible to promise to reach 50 toe / ha / year in a semi-desert zone. Only the cultures of algae made it possible to hope for so much, with great reinforcement of NPK fertilizers, but we already know that the phosphorus deposits will be exhausted in a few decades.
The CO2 from industrial activities or electricity production, therefore reused a second time, will only be counted as neutral if it is not of fossil origin. However, non-fossil synthetic methane will not be available in abundance before 2040, due to the cost of production. On the contrary, atmospheric carbon capture (ACD) will be more accessible, from 2030, between 100 and 250 € anywhere in the world.
For geopolitics, 50 Mkm2 of semi-arid zone, there is not only the Sahara. You should know that the Saudis have already created a research institute (KAUST) ten years ago which collaborates with the Germans on these energy subjects.
The two German start-ups Sunfire and Climeworks (now accompanied by others) were created in 2009, following the peak of oil at 150 $ / barrel, partly caused by the conccurences of use of food crops. They are now well on their way to winning their daring technological bets.