Dynamic determination of the concentration of volatile alcohols in a fixed bed of zeolite 13X by FT-IR

Wu, Chengyuan; Chung, Tsair-Wang; Yang, Thomas C.-K.; Chen, Mai-Tzu

doi:10.1016/j.jhazmat.2006.03.007

Cited by 13 publications

(10 citation statements)

References 16 publications

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“…0 is the stoichiometric time (time for C A = 0.5 C 0 ), and k is a constant that depends on the diffusion characteristics of the mass transfer zone. It is a simple model and can simulate the breakthrough curves well, as already used for modeling adsorption of volatile alcohols in the fixed bed of zeolite 13X [28], modeling adsorption of methyethylketone and benzene vapors in activated carbon fiber beds [29] and o-xylene onto bentonite clay and alumina [30] and so forth. Regression analysis derived from (Eq.…”

Section: Modeling Of Benzene Adsorption On Methyl-sba-15 and Phenyl-smentioning

confidence: 99%

Dynamic adsorption of volatile organic compounds on organofunctionalized SBA-15 materials

Hao

et al. 2009

Chemical Engineering Journal

174

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Section: Modeling Of Benzene Adsorption On Methyl-sba-15 and Phenyl-smentioning

confidence: 99%

Dynamic adsorption of volatile organic compounds on organofunctionalized SBA-15 materials

Hao

et al. 2009

Chemical Engineering Journal

174

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“…Both constant pattern fronts exist in our mathematical model if, and only if, U(X) and C(X) satisfy the system of two PDE (11), (12), which becomes:…”

Section: Condition Of Existence Of a Constant Pattern Concentration Fmentioning

confidence: 99%

“…Environmental concerns promote the interest for the elimination of volatile organic compounds (VOCs) by flowing contaminated air though adsorbent beds, e.g., activated carbon [13] or zeolite [12] filters. VOCs, harmful to human health and environment, are commonly used in paints and dissolving or cleaning agents.…”

Section: Introductionmentioning

confidence: 99%

Linear driving force models for dynamic adsorption of volatile organic compound traces by porous adsorbent beds

Joly

Perrard

2009

Mathematics and Computers in Simulation

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“…Zeolites are often considered as suitable adsorbents for separating alcohols from gaseous mixtures because of their high affinity to polar molecules, such as alcohols 5–21. In particular, as low‐cost adsorbents, special attention is paid in the literature to natural zeolites5, 6, 8, 16, 17, 19, 21 and their ability to adsorb alcohols from gaseous phase.…”

Section: Introductionmentioning

confidence: 99%

“…The investigations in this field are usually concentrated on the adsorption equilibrium,5, 6, 8, 12, 13, 15–21 which is the most important factor in the separation processes. Furthermore, the mass transfer or the kinetics of the adsorption process have also been investigated intensively,7, 9–11, 14–21 due to the important role they play for efficiently leading the separation in the desired direction.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of water and alcohol vapors adsorption on natural zeolite

Ivanova

Kostova

Koumanova

2010

Asia-Pacific J Chem Eng

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Alcohols are important high volatility industrial chemicals, and when present in low concentrations require highly selective separation techniques. This paper investigates the kinetics of the adsorption of water, methanol, and butanol vapors on natural clinoptilolite based on experimental data obtained from laboratory-scale equipment under constant saturated vapor pressure conditions at ambient temperature. In order to determine the corresponding mass transfer and diffusion coefficients of the adsorbed components in the zeolite particles, the kinetic curves have been investigated using two simple models -the linear driving force model (LDFM) as well as the particle diffusion model. The equilibrium and the kinetic parameters can also be determined from the experimental values of the statistical moments of the kinetic curves. Two main results have been obtained from this study. At the experimental conditions, the overall rates of adsorption of both methanol and water vapors are nearly equal, and they are of the same order of magnitude to the macro-(meso)-pore and intracrystalline diffusion rates predicted for the biporous clinoptilolite structure. In contrast, the diffusion of butanol vapors is much slower in the zeolite particles and particle crystals, where the intracrystalline mass transfer resistance plays a dominant role, even for the largest particles studied. The simple LDFM predictions exhibit very good correlation to the experimental data for all adsorptive components and particle sizes, despite the biporous zeolite structure. This model can be used to provide an acceptable and quick interpretation of adsorption rate curves, even at nonlinear equilibrium conditions. 

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Dynamic determination of the concentration of volatile alcohols in a fixed bed of zeolite 13X by FT-IR

Cited by 13 publications

References 16 publications

Dynamic adsorption of volatile organic compounds on organofunctionalized SBA-15 materials

Dynamic adsorption of volatile organic compounds on organofunctionalized SBA-15 materials

Linear driving force models for dynamic adsorption of volatile organic compound traces by porous adsorbent beds

Kinetics of water and alcohol vapors adsorption on natural zeolite

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