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The purpose of this work is to study the desorption characteristics of water vapor on zeolites saturated with water vapor. Three kinds of zeolite; zeolite 3A, zeolite 4A, and zeolite 5A were used as adsorbent. The desorption experiments with several different temperatures in the range of 90 ∼ 150 ℃ and several different flow rates in the ranges of 0 ∼ 0.4 L/min on zeolite bed were carried out. The desorption ability of water vapor was most effective on zeolite 5A among the compared zeolites. The higher the desorption temperature of water vapor was, the faster the desorption velocity was. The desorption ability of water vapor with an air supply was higher than that without an air supply. The most appropriate air flow rate was considered as 0.1 L/min. Key words : Zeolite, Water vapor, Desorption, Desorption temperature, Flow rate 1.   1)       (VOCs)     VOCs       .                ,              (Jeong , 2002; Takeuchi , 1995).                 (Karger Ruthven , 1992: Lee , 1999a).                .   2            .                (Lee , 2007; Lee , 2008a; Lee , 2008b).

Comparison of Desorption Characteristics of Water Vapor on the Types of Zeolites