Krajete GmbH developed a process with the Ingolstadt company with which CO2 can be efficiently filtered out of the ambient air. The carbon dioxide can then be stored or used for other productions.
Refined filter system
The people from Linz have refined the direct air capturing technology together with Audi. The new facility near Linz uses inorganic filter material that can be very highly loaded with molecules and is very insensitive to moisture. This usually eliminates the need for pre-drying of the ambient air, which increases efficiency and reduces costs. This means that more CO2 can be removed from the ambient air in a shorter time. The CO2 obtained is then available in a highly concentrated form as a raw material for permanent storage or for a wide variety of industrial applications.
500 tons of CO2 per year
The large-scale plant currently in operation near Linz can filter 500 tons of CO2 per year. By the end of the year, the capacity of the plant will be increased to 1000 tons by a further module. The electricity required to operate the system comes from a photovoltaic system on the company premises.
Optimized process
“For reasons of efficiency, we first set ourselves the premise of running the process at ambient pressure. Then we varied the adsorber materials used and the physical conditions in the system until we found the optimal flow, i.e. the maximum amount filtered CO2 per unit of time,” says Alexander KrajeteManaging Director of the technology developer of the same name from Upper Austria.
As a result, the costs for the separation could be significantly reduced and are already in the low three-digit euro range for one ton of CO2.
As the next step in addition to the existing large-scale plant in Linz, Audi AG is currently examining the possibility of developing sources with higher CO2 concentrations and filtering other emissions, such as nitrogen oxides.
Source: Nachrichten
