Comparisons of Adsorption-Desorption Characteristics of Major 10 Kinds Components Consisting of Gasoline Vapor

유증기를 구성하는 주요 10종류 성분의 온도에 따른 흡·탈착특성 비교

  • Lee, Song-Woo (Department of Chemical Engineering., Pukyong National University) ;
  • Na, Young-Soo (Segye Chem. Co., Led., R & D Center) ;
  • Lee, Min-Gyu (Department of Chemical Engineering., Pukyong National University)
  • Received : 2014.06.24
  • Accepted : 2014.09.02
  • Published : 2014.09.30


Adsorption and desorption characteristics of the representative 10 kinds components consisting of gasoline vapor on activated carbon were investigated at the temperature range of $-30^{\circ}C{\sim}25^{\circ}C$. The breakthrough curves of each vapors obtained by the Thomas model were well described the breakthrough experimental results of this study. The breakthrough times of each vapors were correlated with the molecular weight, density, and vapor pressure. The breakthrough times had greater correlation with boiling point than molecular weight and density. The slope of the breakthrough curve was a proportional relationship with the rate constant (k) of Thomas model expression. The higher the slope of the breakthrough curve, the rate constant was larger. The biggest slope vapor had the smallest adsorption capacity ($q_e$). Adsorption and desorption characteristics of mixed vapor similar to the gasoline vapor were studied at room temperature ($25^{\circ}C$). The mixed vapor consisting of 9 components; group A (pentane, hexene, hexane), group B (benzene, toluene), group C (octane, ethylbenzene, xylene, nonane) was examined. Group A was not nearly adsorbed because of substitution by group C, and the desorption capacity of group A was smaller than group C. The adsorbed substances were confirmed to be Group C.


  1. Chue, K., Park, Y. K., Jeon, J. K., 2004, Development of adsorption buffer and pressure swing adsorption (PSA) unit for gasoline vapor recovery, Korean J. Chem. Eng,. 21(3), 676-679.
  2. Khan, F. I., Ghoshal, A. K., 2000, Removal of volatile organic compound from polluted air, Journal of Loss Prevention in the Process Industries, 13, 527-545.
  3. Lee, M. G., Lee, S. W., Lee, S. H., 2006a, Comparison of vapor adsorption characteristics of acetone and toluene based on polarity in activated carbon fixed-bed reactor, Korean J. Chem. Eng., 23(5), 773-778.
  4. Lee, S. W., Cheon, J. K., Park, H. J., Lee, M. G., 2008, Adsorption characteristics of binary vapors among acetone, MEK, benzene, and toluene, Korean J. Chem. Eng., 25(5), 1154-1159.
  5. Lee, S. W., Kam, S. K., Lee, M. G., 2007, Comparison of breakthrough characteristics for binary vapors composed of acetone and toluene based on adsorption intensity in activated carbon fixed-bed reactor, J. Ind. Eng. Chem., 13(6), 911-916.
  6. Lee, S. W., Kwon, J. H., Kang, J. H., Na, Y. S., An, C. D., Yoon, Y. S., Song, S. K., 2006b, Adsorption characteristics of toluene vapor according to pore size distribution of activated carbon, J. Environ. Sci., 15(7), 695-699.
  7. Lee, S. W., Na, Y. S., An, C. D., Lee, M. G., 2012a, Comparison of adsorption and desorption characteristics of acetone vapor and toluene vapor on activated carbons according to pore structure, J. Environ. Sci., 21(10), 1195-1202.
  8. Lee, S. W., Na, Y. S., An, C. D., Lee, M. G., 2012b, Comparison of desorption characteristics of water vapor on the types of zeolites, J. Environ. Sci., 21(12), 1463-1468.
  9. Lee, S. W., Na, Y. S., Kam, S. K.,, Lee, M. G., 2013, Effect of temperature, pressure, and air flow rate on VOCs desorption gasoline vapor recovery, J. Environ. Sci., 22(9), 1131-1139.
  10. Popescu, S., Joly, J. P., Carre, J., Danatoiu, C., 2003, Dynamic adsorption and temperature-programed desorption of VOCs (toluene, butyl acetate and butanol) on activated carbons, Carbon, 41, 739-748.
  11. San Miguel, G., Lambert, S. D., Graham, J. D., 2001, The regeneration of field-spent granular-activated carbon, Wat. Res., 35(11), 2740-2748.
  12. Shie, J. L., Lu, C. Y., Chang, C. Y., Chiu, C. Y., Lee, D. J., Liu, S. P., Chang, C. T., 2003, Recovery of gasoline vapor by a combined process of two-stage dehumidification and condensation, J. Chin. Inst. Chem. Engrs., 34(6), 605-616.
  13. Thomas, H. C., 1944, Heterogeneous ion exchange in a flowing system, J. Am. Chem. Soc., 66, 1664-1466.