Separation of SO2 and NO from a simulated gas mixture using the hollow fiber contained liquid membrane (HFCLM) technique has been explored. Separation of SO2 from ag as mixture containing SO2, CO2, O2, and N2 has been studied with pure water and aqueous 1 N NaHSO3 solution. Combined separation of SO2 and NO from a simulated flue gas mixture of SO2, NO, CO2, O2, and N2 has been achieved utilizing aqueous Fe2+EDTA or Fe3+EDTA solutions. In both cases, sweep and vacuum modes of operation have been investigated. The HFCLM technique has been applied successfully for flue gas cleanup at 24-degrees-C; it was also found to be quite effective at 70-degrees-C. A simplified multicomponent gas permeation model based on solution diffusion through the liquid membrane appears to describe the SO2 separation as well as CO2 separation through the water membrane satisfactorily for the sweep mode of permeator operation.