Modeling of Breakthrough Curves for Adsorption of Propane, n-Butane, and Iso-Butane Mixture on 5A Molecular Sieve Zeolite

Ahmed, Muthanna J.; Mohammed, Abdul Halim A-K; Kadhum, Abdul Amir H.

doi:10.1007/s11242-010-9617-5

Cited by 19 publications

(8 citation statements)

References 13 publications

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“…The equilibrium model shows well correlation for the experimental breakthrough curve data of Fig. 13, as mentioned in our previous study [3].…”

Section: Effect Of Feed Pressuresupporting

confidence: 83%

“…In order to study the effect of the feed flow rate (0.736-2.944 l/min), feed pressure (151.9-355.0 kPa), and adsorbates composition (58.75-75.32 %) on breakthrough curves, a set of experiments was carried out at room temperature of 301 ± 2 K. In our previous study [3], the experimental equilibrium isotherm data for pure propane and n-butane, taken from Ruthven etl al. [14] were correlated with Langmuir and Freundlich models and the best fitting was achieved with Langmuir isotherm, as presented in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…1) was degasified by evacuation to a pressure \3 Pa for 3 h. The apparatus is similar to that described elsewhere [3]. After the adsorbent had been regenerated, the vacuum pump was switched off.…”

Section: Methodsmentioning

confidence: 99%

“…The light hydrocarbons such as propane, n-butane, and iso-butane are an example of linear-branched alkanes system. It appears in many petroleum fractions like liquefied petroleum gas and bottom contents of a refinery depropanizer column [3].…”

Section: Introductionmentioning

confidence: 99%

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Temperature distribution studies for light hydrocarbons (propane, n-butane, and iso-butane) adsorption on 5A molecular sieve zeolite

Ahmed

Theydan

2014

Heat Mass Transfer

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Concentration distribution represented by breakthrough curves for propane, n-butane, and iso-butane mixture on 5A molecular sieve zeolite were obtained experimentally at a constant temperature of 301 K. The temperature distribution curves were also studied. The effect of feed flow rate, feed pressure, and adsorbates composition on these breakthrough curves was examined. The spacing of the pressure waves of adsorbates (propane and n-butane) was enough to indicate that 5A molecular sieve zeolite could be used as a separating agent for these components.

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“…The equilibrium model shows well correlation for the experimental breakthrough curve data of Fig. 13, as mentioned in our previous study [3].…”

Section: Effect Of Feed Pressuresupporting

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Temperature distribution studies for light hydrocarbons (propane, n-butane, and iso-butane) adsorption on 5A molecular sieve zeolite

Ahmed

Theydan

2014

Heat Mass Transfer

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“…A comprehensive model for the adsorption process consists of a model for the analysis of dynamic adsorption (macroscopic mass, energy and momentum conservation equations) coupled to a model of equilibrium adsorption (isotherm equations). Previous studies on modeling dynamic adsorption of competing adsorbates focused on binary − or ternary , mixtures. However, most industrial emissions usually consist of mixture of more than three adsorbates, as is the case of emissions from automotive painting booths. , Hence, there is a need for developing a mathematical model to predict the multicomponent competitive adsorption of mixtures of any number of adsorbates.…”

Section: Introductionmentioning

confidence: 99%

Modeling Competitive Adsorption of Mixtures of Volatile Organic Compounds in a Fixed-Bed of Beaded Activated Carbon

Tefera

Hashisho

Philips

et al. 2014

Environ. Sci. Technol.

101

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A two-dimensional mathematical model was developed to study competitive adsorption of n-component mixtures in a fixed-bed adsorber. The model consists of an isotherm equation to predict adsorption equilibria of n-component volatile organic compounds (VOCs) mixture from single component isotherm data, and a dynamic adsorption model, the macroscopic mass, energy and momentum conservation equations, to simulate the competitive adsorption of the n-components onto a fixed-bed of adsorbent. The model was validated with experimentally measured data of competitive adsorption of binary and eight-component VOCs mixtures onto beaded activated carbon (BAC). The mean relative absolute error (MRAE) was used to compare the modeled and measured breakthrough profiles as well as the amounts of adsorbates adsorbed. For the binary and eight-component mixtures, the MRAE of the breakthrough profiles was 13 and 12%, respectively, whereas, the MRAE of the adsorbed amounts was 1 and 2%, respectively. These data show that the model provides accurate prediction of competitive adsorption of multicomponent VOCs mixtures and the competitive adsorption isotherm equation is able to accurately predict equilibrium adsorption of VOCs mixtures.

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Preselection of a sorption model based on a column test: the algorithm and an example of its application

2021

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In order to describe the contamination of saturated porous media, it is necessary to find an appropriate mathematical model that includes processes occurring in aquifers, such as advection, dispersion, diffusion, and various kinds of sorption. The identification of parameters of those processes is possible through laboratory column experiments, which result in records of breakthrough curves for a conservative tracer and a reactive tracer. An algorithm leading to the preliminary selection of the mathematical model that best describes transport processes of the reactive tracer in the experimental column is proposed in this article. A study published previously presented a sensitivity analysis for an arbitrarily adopted variability of the transport parameters. The analysis involved examining changes in the shape of breakthrough curves caused by the alteration of each parameter value. Specially defined indicators called descriptors were proposed to quantitatively describe the breakthrough curves. Then, formulas were proposed to determine the percentage deviations of descriptors of the breakthrough curve obtained for the reactive tracer in relation to the descriptors of the breakthrough curve of the conservative tracer. In the work described in this article, the deviations are analyzed and an algorithm is proposed that allows the preselection of the most suitable sorption model out of the five discussed simple (one-site) and six hybrid (two-site) models. The algorithm can facilitate and accelerate the interpretation of column experiments of contaminant transport in a porous medium. An example is provided to illustrate the usability of the proposed algorithm.

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Modeling of Breakthrough Curves for Adsorption of Propane, n-Butane, and Iso-Butane Mixture on 5A Molecular Sieve Zeolite

Cited by 19 publications

References 13 publications

Temperature distribution studies for light hydrocarbons (propane, n-butane, and iso-butane) adsorption on 5A molecular sieve zeolite

Temperature distribution studies for light hydrocarbons (propane, n-butane, and iso-butane) adsorption on 5A molecular sieve zeolite

Modeling Competitive Adsorption of Mixtures of Volatile Organic Compounds in a Fixed-Bed of Beaded Activated Carbon

Preselection of a sorption model based on a column test: the algorithm and an example of its application

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