Modeling of the fixed - bed adsorption of carbon dioxide and a carbon dioxide - nitrogen mixture on zeolite 13X

Dantas, Tirzhá Lins Porto; Luna, F. Murilo T.; Silva, I. J; Torres, A. Eurico B.; Azevedo, Diana C. S.; Rodrigues, Alı́rio E.; Moreira, Regina de Fátima Peralta Muniz

doi:10.1590/s0104-66322011000300018

Cited by 92 publications

(56 citation statements)

References 18 publications

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“…It is an approximation of the Fick law and is called the linear driving force model, which was originally proposed by Glueckauf and Coates (1947). This model has been successfully applied to describe the adsorption of dye (Chuang et al, 2003) from aqueous solution and organic components from the gas phase (Dantas et al, 2011;Otero et al, 2005).…”

Section: Double Resistance Modelmentioning

confidence: 99%

Adsorption of the Dye Reactive Blue 5g in Retorted Shale

Lambrecht

Barros

Arroyo

et al. 2015

Braz. J. Chem. Eng.

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-In this study the influence of the volumetric flow rate and feed concentration was investigated for the adsorption of the reactive dye Blue 5G. Experiments were carried out in a bed packed with retorted shale, at 30 o C. The ranges investigated were flow rate 2 -10 mL/min and the feed concentration 13-105 mg/L. Mathematical models were used to represent the dynamic sorption. The double resistance model considers the effects of the axial dispersion and the mass transfer resistance of the external film and inside the particles. As a result, the mass transfer coefficient of the external film and the internal mass transfer coefficient were estimated. The Thomas model was used to simulate the experimental data. In this model the fitted parameter was the adsorption kinetic constant. The first model provided an acceptable representation of the dynamic uptake of the reactive dye Blue 5G.

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Section: Double Resistance Modelmentioning

confidence: 99%

Adsorption of the Dye Reactive Blue 5g in Retorted Shale

Lambrecht

Barros

Arroyo

et al. 2015

Braz. J. Chem. Eng.

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“…A variety of microporous materials such as activated carbon (AC), zeolites, and metal-organic frameworks (MOFs) have been studied and developed for physical adsorption of gas mixtures containing CO 2 (Dantas et al 2011a;Belmabkhout and Sayari, 2009;Bae et al, 2008). Activated carbons have been tested for applications in CO 2 separation from binary mixtures CO 2 -CH 4 (Buss, 1995;Ahmadpour et al, 1998;Dreisbach et al, 1999;Qiao et al, 2000;van der Vaart et al, 2000;Goetz et al, 2006;Bazan et al, 2008) due to their high surface area, micropore volume and suitable pore size distribution (Dantas et al, 2011b).…”

Section: Introductionmentioning

confidence: 99%

Studies on the adsorption behavior of CO2-CH4 mixtures using activated carbon

Rios

Stragliotto

Peixoto

et al. 2013

Braz. J. Chem. Eng.

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-Separation of CO 2 from CO 2 -CH 4 mixtures is an important issue in natural gas and biogas purification. The design of such separation processes depends on the knowledge of the behavior of multicomponent adsorption, particularly that of CO 2 -CH 4 mixtures. In this study, we present a series of experimental binary equilibrium isotherms for CO 2 -CH 4 mixtures on an activated carbon at 293 K and compare them with predicted values using the Ideal Adsorption Solution Theory (IAST) and the Extended Langmuir (EL) model. Even at concentrations of ca. 20% for all binary isotherms, CO 2 already presents higher adsorbed amounts with respect to CH 4 . A maximum selectivity of around 8.7 was observed for a nearly equimolar mixture at 0.1 MPa. The IAST in conjunction with the Toth equation showed slightly better results than IAST using the Langmuir equation and both showed better results than the EL model.

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“…The BTC for the adiabatic case was symmetric around the stoichiometric BTC (step function at

t / t^{*}

= 1), while the rear end of the BTC for the nonadiabatic case exhibited a pronounced tail due to column heat loss. These BTC profiles were quantitatively described by an adiabatic column dynamic model (Figure a) and by a nonadiabatic column dynamic model (Figure b) confirming that the column heat loss is presumably responsible for the tail in the BTC . A LDF model which uses the difference in the adsorbate loading (mol/g) as the driving force for adsorbate mass transfer with a constant mass‐transfer coefficient ( k , s −1 ) was used in the model .…”

Section: Relevant Literaturementioning

confidence: 65%

“…Dantas et al published experimental column BTC data and the corresponding model analysis for (a) isobaric and adiabatic adsorption of a gas mixture (20% CO 2 + He) on NaX zeolite at a pressure of 1.02 atm and a temperature of 323 K (Run 2 of Figure in Ref. ) and (b) isobaric and nonadiabatic adsorption of a gas mixture (10% CO 2 + N 2 ) on NaX zeolite at a pressure of 1.2 atm and a temperature of 323 K (Run 10 of Figure in Ref. ).…”

Section: Relevant Literaturementioning

confidence: 99%

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Comparative performance of an adiabatic and a nonadiabatic PSA process for bulk gas separation—a numerical simulation

Vemula

Sircar

2017

AIChE Journal

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A detailed numerical model of a Skarstrom‐like PSA process is used to investigate the separation performance of an adiabatic and a nonadiabatic process for removal of bulk CO2 impurity from inert He. The complexity of the gas phase adsorbate composition, adsorbate loading, and the adsorbent temperature profiles as functions of positions inside an adsorber at the start and end of each step of the PSA process are discussed. The separation performance of a nonadiabatic PSA process is generally inferior to that of the corresponding adiabatic process. Smaller adsorbent column diameter accentuates nonadiabatic operation and hence lower separation efficiency. Furthermore, the separation efficiency decreases more rapidly at short cycle times and smaller column diameters. Insulation of PSA columns of a process development unit operated under these conditions is recommended for reliable data analysis. © 2017 American Institute of Chemical Engineers AIChE J, 63: 4066–4078, 2017

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Modeling of the fixed - bed adsorption of carbon dioxide and a carbon dioxide - nitrogen mixture on zeolite 13X

Cited by 92 publications

References 18 publications

Adsorption of the Dye Reactive Blue 5g in Retorted Shale

Adsorption of the Dye Reactive Blue 5g in Retorted Shale

Studies on the adsorption behavior of CO2-CH4 mixtures using activated carbon

Comparative performance of an adiabatic and a nonadiabatic PSA process for bulk gas separation—a numerical simulation

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