Today, at least several technologies for "storage" of atmospheric CO2 are known. However, researchers at the Massachusetts Institute of Technology (MIT) have gone further. They learned how to convert carbon dioxide emitted from fuel combustion at thermal power plants into raw materials, which can then be processed into fuel for cars and aircraft, as well as into other substances.
Dr. Xiao Yu Wu, together with Ahmed Guniem and professor of mechanical engineering Ronald Cran, developed a membrane system based on compounds of lanthanum, calcium and iron oxide, passing through which carbon dioxide (CO2) is converted into monoxide - CO.
The separation process itself takes place at a temperature of 990 ° C. It is very important that CO continues “its way” through the membrane until it is on the opposite side. This can be achieved with the help of a vacuum, but it requires a lot of energy.
An alternative to the costly technology can be the use of a stream of hydrogen or methane, since these substances are easily oxidized and do not require a difference in pressure to "pump" oxygen atoms through the membrane.
The resulting carbon monoxide can be used directly as a fuel, and in combination with hydrogen, water, or a mixture thereof, to obtain liquid hydrocarbon fuel and other valuable chemical products - methanol, synthesis gas, etc.