ABSORPTION/DESORPTION OF ACIDIC COMPONENTS SUCH AS E.G. CO2 BY USE OF AT LEAST ONE CATALYST

摘要

Method for removal of CO2 from a gas mixture (201), said method comprising at least one absorption step and optionally at least one desorption step wherein an absorbent (202) is used to absorb the CO2 and at least one carbonic anhydrase enzyme is used to catalyze the absorption, wherein at least one carbonic anhydrase enzyme with a high Km value (catalyst 2) is used as catalyst(s) in an absorption section (section 2) where the CO2 concentration is high and at least one carbonic anhydrase enzyme with a low Km value (catalyst 1) is used as catalyst(s) in an absorption section (section 1) where the CO2 concentration is lower than the high CO2 concentration.