Carbon dioxide recovery by vacuum stripping at low temperatures (below 100°C) could be a promising technology to substitute the desorption process in conventional aqueous amine absorption process. We prepared composite membranes by coating hydrophobic silicalite-filled PDMS layers on porous PE supports and used as new membrane strippers for CO2 recovery to prevent typical pore wetting problem of hydrophobic PTFE porous membranes. CO2 fluxes were measured under various operation conditions, such as different vacuum pressures, stripping temperatures, CO2 loadings, types of amine solutions and operation time. The composite membranes showed excellent long-term stability in vacuum stripping process when compared with porous PTFE membranes.

• 공창인(한국화학연구원, 연세대학교, Korea Research Institute of Chemical Technology, Yonsei university) | Chang In Kong
• 문수영(한국화학연구원, Korea Research Institute of Chemical Technology) | Su Young Moon
• 장봉준(한국화학연구원, Korea Research Institute of Chemical Technology) | Bong Jun Chang
• 김정훈(한국화학연구원, Korea Research Institute of Chemical Technology) | Jeong Hoon Kim