How does Akrosorb Soda Lime Work

Akrosorb Soda Lime is contained in an absorber, appropriately sized for the application. The gas is passed through the absorber and the CO₂ is removed by a base catalyzed chemical reaction, converting the CO₂ to Calcium Carbonate that is retained within the absorber. The absorber will have a finite life based on the quantity of Akrosorb Soda lime contained and the level of CO₂ within the treated gas. The absorber will remove all of the CO₂ (if appropriately sized for the application) and once the Soda lime is consumed, CO₂ breakthrough will occur and the CO₂ level in the exiting gas stream begins to increase.

When put in contact with an acidic gas like CO₂, a strong & exothermic (heat producing) reaction takes place that gives off water and binds the CO₂ by forming a stable Calcium Carbonate.  When binding to other acidic gases, other calcium or sodium salts are formed.  Akrosorb Soda Lime offered here contains a color indicator that aids in indicating the useful life of the Soda Lime. As the Soda Lime becomes less effective at binding CO₂, the color of the Soda Lime changes to indicate exhaustion of property.  This color change should not be the sole method of determining when to replace the absorbent, but it is an indication of use. Akrosorb Soda Lime is also available without indicator i.e. no color change takes place on performance of activity of absorption of CO_2.