Simultaneous removal of CO2 and H2S from pressurized CO2-H2S-CH4 gas mixture using hollow fiber membrane contactors

► High-pressure simultaneous removal of H2S and CO2 from pressurized gas mixture into absorption solvents was realized. ► Perfluoroalkoxy (PFA) and ePTFE hollow fiber membranes have been used in custom made high pressure modules. ► PFA fibers provided significantly higher fluxes for CO2 and H2S than those obtained with the more common ePTFE fibers. ► Liquid phase mass transfer resistance dominates at low pressures. ► Gas phase mass transfer resistance contributes considerably at high pressures.