Abstract:
A method and apparatus to reduce SO 2 emissions by gas membrane separation and liquid carrier chemical absorption. The membrane separation system consists of an absorption system containing ceramic membranes through which is circulated an aqueous NaOH absorbent carrier. Exhaust gases contact the exterior surface of the membranes and the target gasses permeate the membrane wall and are absorbed by the carrier within the bore and thereby are removed from the exhaust stream. Regeneration of the NaOH absorbent carrier is carried out using an electrolyser and regenerated aqueous NaOH is recirculated back into the bore.