Adsorption equilibrium studies for ethyl acetate vapor and E-Merck 13X molecular sieve system

Competition among Mixed Adsorbates Affecting the Adsorption of Gaseous Methyl Ethyl Ketone by Hydrophobic Molecular Sieve

“…The Langmuir (Eq. (3)) isotherm models are used to fit the experimental equilibrium capacity data (Q e ) with various inlet concentrations (C) for adsorption of a single VOC at a constant temperature (Chou and Chiou, 1997;Yun, et al, 1998;Manjare and Ghoshal, 2006;Choudary, et al, 2002;Yoo, et al, 2005;O'Connor, 2006)). …”

“…Experimentally, the adsorption capacities of chloroanilines on montmorillonite and kaolinite sieves depend on the hydrophilicity and lipophilicity of adsorbates; that is, the extent of adsorption on hydrophobic adsorbents increases with lipophilicity of adsorbates (Angioi, et al, 2005;Polati, et al, 2006). Additionally, the effects of moisture competition and high temperature desorption, which reduce the VOC adsorption capacities of adsorbents, have been extensively investigated (Keener and Zhou, 1990;Chou and Chiou, 1997;Lercher and Seshan, 1997;Yun, et al, 1998;Gawryś et al, 2001;Bilgiç and Aşkin, 2003;Manjare and Ghoshal, 2006). Generally, various solvents (such as ketones and alcohols) are gathered together in an internal circulation cabinet.…”

Nitrogen and hydrogen adsorption of activated carbon fibers modified by fluorination

“…Numerous models have been reported in the literature to explain the experimental adsorption data [19][20][21]. In this work, in order to determine the adsorption isotherm model and to understand the adsorption mechanism, the experimental data were applied to the Freundlich, Langmuir, and LangmuirFreundlich isotherm equations [19][20][21].…”

“…In this work, in order to determine the adsorption isotherm model and to understand the adsorption mechanism, the experimental data were applied to the Freundlich, Langmuir, and LangmuirFreundlich isotherm equations [19][20][21]. Using Graphpad Prism 4.0 software, nonlinear curve fitting of the hydrogen adsorption data were carried out to find an optimal isotherm model and parameters.…”

Adsorptive properties of X zeolites modified by transition metal cation exchange

“…They can participate to ion-exchange processes with other type of cations from primarily aqueous solutions. N 2 , CO 2 and other guest molecules adsorption onto cation-exchanged X zeolites have been extensively studied to determine the effect of ion type on the adsorption equilibrium and energetics (Jayaraman et al 2002;Siporin et al 2003;Maurin et al 2005;Manjare and Ghoshal 2006;Walton et al 2006;Derkowski et al 2007;Díaz et al 2008). Despite evidence in the literature of increased interest in zeolites containing polyvalent cations of transition metals, no adsorption study has yet been published on X zeolite exchanged with Ni 2+ and Cr 3+ ions at different percentages of exchange.…”