Organic Vapor Recovery and Energy Efficiency during Electric Regeneration of an Activated Carbon Fiber Cloth Adsorber
Publication: Journal of Environmental Engineering
Volume 130, Issue 3
Abstract
An electrothermal-swing adsorption system was demonstrated on the bench scale for capture and recovery of organic vapors from air streams. Methyl propyl ketone (MPK), methyl ethyl ketone, n-hexane, acetone, and methylene chloride were removed and recovered at in a 40.0 slpm air stream while using activated carbon fiber cloth (ACFC) adsorbent. Removal efficiencies were greater than 99.9%. Liquid recovery fractions increased with increasing relative pressure, ranging from 0.11 for methylene chloride to greater than 0.80 for MPK The electrical energy consumed during regeneration per mol of liquid organic compound recovered decreased with increasing relative pressure of the inlet gas stream, ranging from 4,698 kJ/mol for methylene chloride to 327 kJ/mol for MPK. Equilibrium ACFC adsorption capacity, throughput ratio, and length of unused bed were also evaluated. These results are encouraging for the development of a new technology to capture and readily recover a wide range of organic vapors from air streams.
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References
Cal, M. P., Larson, S. M., and Rood, M. J.(1994). “Experimental and modeled results describing the adsorption of acetone and benzene onto activated carbon fibers: Comparison of experimental and modeled isotherms.” Environ. Prog., 13(1), 26–30.
Cal, M. P., Rood, M. J., and Larson, S. M.(1995). “Removal of VOCs from humidified gas streams using activated carbon cloth.” Gas Sep. Purif., 10(2), 117–121.
Dombrowski, K. (2001). “Electrothermal regeneration of activated carbon fiber cloth with adsorbed volatile organic compounds.” MS thesis, University of Illinois, Urbana, Ill., 93.
Dubinin, M. M.(1989). “Fundamentals of the theory of adsorption in micropores of carbon adsorbents—Characteristics of their adsorption properties and microporous structures.” Carbon, 27(3), 457–467.
Environmental Protection Agency (EPA). (2000a). “National air quality and emissions trends.” Rep. No. EPA-454/R-01-004, Research Triangle Park, N.C.
Environmental Protection Agency (EPA). (2000b). “Taking toxics out of the air.” Rep. No. EPA-452/K-00-002, Research Triangle Park, N.C.
Environmental Protection Agency (EPA). (2002a). “Inventory of U.S. greenhouse gas emissions and sinks: 1990–2000.” Rep. No. EPA-430-R-02-003, Washington, D.C.
Environmental Protection Agency (EPA). (2002b). “Section 122 hazardous air pollutants.” 〈http://www.epa.gov/ttn/atw/188polls.html〉 (Aug. 1, 2002).
Environmental Protection Agency (EPA). (2003). “Average annual emissions, all criteria pollutants; years including 1980, 1985, 1989–2001.” 〈http://www.epa.gov/ttn/chief/trends/trends01/trends2001.pdf〉 (Feb. 23, 2003).
Foster, K. L., Fuerman, R. G., Economy, J., Larson, S. M., and Rood, M. J.(1992). “Adsorption characteristics of trace volatile organic-compounds in gas streams onto activated carbon-fibers.” Chem. Mater., 4(5), 1068–1073.
Hayes, J., and Joseph, S. (1981). “Novoloid fibers.” Kirk-Othmer: Encyclopedia of chemical technology, Vol. 16, Wiley, New York, 125–138.
Hsi, H.-C., et al. (2001). “Effects of sulfur impregnation temperature on the properties and mercury adsorption capacities of Activated Carbon Fibers (ACFs).” Environ. Sci. Technol., 35(13), 2785–2791.
Incopera, F. P., and Dewitt, D. P. (1981). Fundamentals of heat transfer, Wiley, New York.
LeCloirec, P., Rasquet, C., and Subrenat, E.(1996). “The adsorption onto fibrous activated carbon—applications to water and air treatments.” Abstr. Pap.-Am. Chem. Soc., 211(77), 379–384.
LeVan, M. D., Carta, G., and Yon, C. M. (1997). “Adsorption and ion exchange.” Perry’s Chemical Engineers’ Handbook, 7th Ed., McGraw-Hill, New York, 16–17.
Lo, Suk-yi. (2002) “Characterization of the chemical, physical, thermal and electrical properties of a series of activated carbon fiber cloths.” M.S. thesis, University of Illinois, Urbana, Ill., 110.
Lordgooei, M., et al. (1998). “Sorption and modeling of mass transfer of toxic chemical vapors in activated-carbon fiber-cloth adsorbers.” Energy Fuels, 12(6), 1079–1088.
McCabe, W. L., Smith, J. C., and Harriott, P. (1993). Unit operations of chemical engineering, 5th Ed., McGraw-Hill, New York, 821.
Merck Index. (1996). 12th Ed., S. Budavari, ed. Merck & Co., Whitehouse Station, N.J.
Petkovska, M., et al. (1991). “Temperature-swing gas separation with electrothermal desorption step.” Sep. Sci. Technol., 26(3), 425–444.
Ramirez, D., Sullivan, P. D., Rood, M. J., and James, K. J.(2004). “Equilibrium adsorption of phenol-, tire-, and coal-derived activated carbons for organic vapors.” J. Environ. Eng., 130(3), 231–241.
Reid, R. C., Prausnitz, J. M., and Poling, B. E. (1987). The properties of gases and liquids, 4th Ed., McGraw-Hill, New York.
Sullivan, P. D., Rood, M. J., Hay, K. J., and Qi, S.(2001). “Adsorption and electrothermal desorption of hazardous organic vapors.” J. Environ. Eng., 127(3), 217–223.
Sullivan, P. D., et al. (2004). “Capture of organic vapors using adsorption and electrothermal regeneration.” J. Environ. Eng., 130(3), 258–267.
Weast, R. C., ed. (2000). CRC Handbook of chemistry and physics, 81st Ed., CRC Press, Boca Raton, Fla.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 130 • Issue 3 • March 2004
Pages: 268 - 275
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Sep 18, 2002
Accepted: Mar 25, 2003
Published online: Feb 19, 2004
Published in print: Mar 2004
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