ABSTRACT
This chapter focuses on a variety of advances that have taken place with such membrane contactors. The membrane contactor configurations are also used for purely reactive processes, as for example membrane ozonation in gas-liquid systems. Supercritical fluid liquid systems have been covered briefly by Sirkar and will not be treated here. A very brief identification of the earliest investigations of and reviews for various membrane contactors will be provided at the beginning of each section that follows; then recent major developments will be identified. In conventional membrane contactors for gas-liquid systems, the feed gas phase flows on one side of the membrane as it is being scrubbed; the liquid generally flows counter-currently on the other side of the membrane at least for a gas absorber. Membrane contactors for gas-liquid systems have been studied for absorption of CO2, H2S, and SO2, from various gaseous streams.
