In the processing of regenerative energy carriers like biofuel, wood, waste fraction with high heat value, or animal meal to synthetic gas, the carbon dioxide has to be removed. The gas is forwarded by a compressor to an absorption cell, where it flows up through a support medium aggregate. This aggregate is being sprayed from above with water that is conveyed by a Micro Bubble Generator. During this process, the water is enriched with CO2 out of the synthesis gas. Afterwards the water is led into a desorption tank, in which most of the CO2 will out gas.