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KMID : 1024520140230091593
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Journal of the Environmental Sciences
2014 Volume.23 No. 9 p.1593 ~ p.1600
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Comparisons of Adsorption-Desorption Characteristics of Major 10 Kinds Components Consisting of Gasoline Vapor
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Lee Song-Woo
Na Young-Soo
Lee Min-Gyu
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Abstract
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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 25 . 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 (qe). Adsorption and desorption characteristics of mixed vapor similar to the gasoline vapor were studied at
room temperature (25 ). 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.
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KEYWORD
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Gasoline vapor, Adsorption, Desorption, Activated carbon, Thomas model
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