Adsorption of organic solvent vapors on hydrophobic Y-type zeolite

• Published in: AIChE journal Vol. 44; no. 6; pp. 1344 - 1350
• Main Authors: Yun, Jeong-Ho, Choi, Dae-Ki, Kim, Sung-Hyun
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.06.1998; Wiley Subscription Services; American Institute of Chemical Engineers
• Subjects: Applied sciences; Atmospheric pollution; Chemistry; Exact sciences and technology; General and physical chemistry; General processes of purification and dust removal; Pollution; Prevention and purification methods; Solid-gas interface; Surface physical chemistry; Hydrocarbon; Organic adsorbate; Toluene; Adsorption isotherm; Theoretical study; Volatile organic compound; Inorganic adsorbent; Zeolite; Experimental study; Halocarbon; Molecular sieve; Gas solid adsorption; Organic solvent; Benzene; Dichloromethane; Aromatic compound; Physicochemical purification; Thermodynamic properties; Heat of adsorption; Flue gas purification
• ISSN: 0001-1541; 1547-5905
• DOI: 10.1002/aic.690440612

Experimental isotherms and prediction results for adsorption of benzene, toluene, dichloromethane and 1,1‐dichloro‐1‐fluoroethane on hydrophobic Y‐type zeolite are reported. Isotherm shows the type‐V shape according to the classification by Brunauer et al. A simple thermodynamic method is employed to predict the experimental equilibrium data at various temperatures simultaneously. This plain method is based on the assumption that the value of the isosteric heat of adsorption does not depend on temperature for a certain surface loading. The Clausius–Clapeyron equation was used to calculate the isosteric heat of adsorption. To apply the method, only two sets of the experimental isotherm data at two different temperatures are needed. The Clausius–Clapeyron equation with two isotherms provided simple and reliable prediction of adsorption equilibrium relationships at various temperatures. Our results with this method showed that the predicted value agrees well with the experimental data in the range of temperatures for the system tested.