Open AccessSEPARATION OF CO2 FROM FLUE GASES BY CARBON-MULTIWALL CARBON NANOTUBE MEMBRANES
Author(s) -
Rodney Andrews
Publication year - 2001
Language(s) - English
Resource type - Reports
DOI - 10.2172/792162
Subject(s) - carbon nanotube , flue gas , nitrogen , bar (unit) , materials science , chemical engineering , carbon fibers , membrane , condensation , atmospheric pressure , atmospheric temperature range , kinetics , analytical chemistry (journal) , chemistry , nanotechnology , chromatography , organic chemistry , composite material , thermodynamics , biochemistry , physics , meteorology , composite number , engineering , oceanography , quantum mechanics , geology
Multiwalled carbon nanotubes (MWNT) were found to be an effective separation media for removing CO{sub 2} from N{sub 2}. The separation mechanism favors the selective condensation of CO{sub 2} from the flowing gas stream. Significant uptakes of CO{sub 2} were measured at 30 C, 150 C and 300 C over the pressure range 0.5 to 5 bar. No measurable uptake of nitrogen was found for this range of conditions. The mass uptake of CO{sub 2} by MWNT was found to increase with increasing temperature. A packed bed of MWNT completely removed CO{sub 2} from a flowing stream of CO{sub 2}/N{sub 2}, and exhibited rapid uptake kinetics for CO{sub 2}