The invention relates to devices (10) and methods for removing CO2 (carbon dioxide) using a technically supported photosynthesis application. Advantageously, the biological processes of photosynthesis are positively influenced by said application thus optimising the effectiveness and resource consumption. In a further embodiment, CO2 removal is combined with a CO2 producing power station which enables a highly-efficient photosynthetic conversion to take place. Advantageously, the biomass, which is produced when the CO2 removal device (10) is in operation, can be added as fuel and/or as additional fuel to the power station operation. The invention also relates to a method for economically using the removed CO2.
