Predicting Gas‐Phase Adsorption Equilibria of Volatile Organics and Humidity
Publication: Journal of Environmental Engineering
Volume 115, Issue 3
Abstract
Several thermodynamic models that may be used to predict single and binary adsorption equilibria for organic vapors and competitive interactions between water vapor and a single organic vapor were developed and tested. The low organic vapor concentrations and humidities that were examined are similar to those that would be encountered in air stripping tower air emissions. The Dubinin‐Radushkevich (D‐R) equation was shown to predict single‐component adsorption equilibria for trichloroethene (TCE) and tetrachloroethene (PCE) using a reference isotherm which was conducted on toluene and physical properties of TCE and PCE. Both the Polanyi potential theory and ideal adsorbed solution theory (IAST) were shown to predict binary adsorption equilibria for TCE and PCE using single component isotherm data. The competitive interactions between water vapor and TCE were predicted using TCE isotherm data (which was conducted at low relative humidities), a water vapor isotherm, and the pore size distribution of the carbon.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Crittenden, J. C. (1985). “Predictions of multicomponent adsorption equilibria using ideal adsorbed solution theory.” Environ. Sci. Technol. 19(11), 1037–1043.
2.
Crittenden, J. C., et al. (1987). “An evaluation of the technical feasibility of the air stripping solvent recovery process.” Research Report, American Water Works Association Research Foundation, Denver, Colo.
3.
Crittenden, J. C., et al. (1988). “Removal of volatile organic chemicals from air stripping tower off‐gas using granular activated carbon.” J. Am. Water Works Assoc., 80(5), 73–84.
4.
Defay, R., et al. (1966). Surface tension and adsorption. John Wiley and Sons, Inc., New York, N.Y., 259–269.
5.
Dubinin, M. M. (1965). “Theory of the bulk saturation of microporous activated charcoals during adsorption of gases and vapours.” Russ. J. Phys. Chem., 39(6), 697–704.
6.
Dubinin, M. M., and Radushkevich, L. V. (1947). Dokl. Akad. Nauk. SSSR, 55, 331–338 (in Russian).
7.
Freeman, G. B., and Reucroft, P. J. (1979). “Adsorption of HCN and vapor mixtures by activated and impregnated carbons.” Carbon, 17, 313–320.
8.
Gossett, J. M. (1987). “Measurement of Henry's law constants for and chlorinated hydrocarbons.” Environ. Sci. Tech., 21(2), 202–208.
9.
Grant, R. J., and Manes, M. (1966). “Adsorption of binary hydrocarbon gas mixtures activated carbon.” Ind. Engrg. Chem. Fundam., 5, 490–498.
10.
Hand, D. W., et al. (1988). “Performance of air stripping and GAC for SOC and VOC removal from groundwater.” Cooperative Agreeement No. CR811150‐01‐0, U.S. Environmemtal Protection Agency, Cincinnati, Ohio.
11.
Myers, and Prausnitz, J. M. (1965). “Thermodynamics of missed gas adsorption.” Am. Inst. Chem. Engr. J., 11(1), 121–127.
12.
Okazaki, M., Tamon, H., and Toei, R. (1978). “Prediction of binary adsorption equilibria of solvent and water vapor activated carbon.” J. Chem. Engrg. Jpn., 11(3), 209–215.
13.
Perry, R. H., and Chilton, C. H., ed. (1973). Chemical engineers' handbook. 5th Ed., McGraw‐Hill Co., New York, N.Y., 3–240.
14.
Randtke, S. J., and Snoeyink, V. L. (1983). “Evaluation of GAC adsorptive capacity.” J. Am. Water Works Assoc., 75, 406–413.
15.
Rasmuson, A. C. (1984). “Adsorption equilibria on activated carbon of mixtures of solvent vapours.” Fundamentals of adsorption, proceedings of the engineering foundation conference, A. Meyers and G. Belfort, eds., Engineering Foundations, United Engineering Trustees, Inc., New York, N.Y., 451–470.
16.
Reucroft, P. J., Simpson, W. H., and Jonas, L. A. (1971). “Sorption properties of activated carbon.” J. Phys. Chem., 75(23), 3523–3531.
17.
Scott Environmental Technology, Inc. (1983). “Field validation of EPA reference method 23, method for determination of halogenated organics from stationary sources.” EPA Contract 68‐01‐3405, National Technical Information Service, Springfield, Va. 22161.
18.
Speth, T. F. (1986). “Predicting equilibria for single and multicomponent aqueousphase adsorption onto activated carbon,” thesis presented to Michigan Technological University, at Houghton, Mich., in partial fulfillment of the requirements for the degree of Master in Civil Engineering.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 115 • Issue 3 • June 1989
Pages: 560 - 573
Copyright
Copyright © 1989 ASCE.
History
Published online: Jun 1, 1989
Published in print: Jun 1989
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.