An adsorption isotherm of multi-site occupancy model for homogeneous surface.

Nitta, Tomoshige; Shigetomi, Takuo; Kurooka, Masayuki; Katayama, Takashi

doi:10.1252/jcej.17.39

Cited by 165 publications

(139 citation statements)

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“…With these results it was possible to evaluate the partial pressure influence of n-pentane on the column behavior. The adsorption column used to obtain the experiments data had length 0.2 m and internal diameter of 0.0335 m. The system had apparent specific mass of solid ρ a = 1130 Kg/m 3 ; bed porosity of ε b = 0.32; solid porosity ε p = 0.35; solid adsorbent diameter d p = 0.0016 m, and column length L = 0.006 m. The equilibrium parameters of the adsorption isotherm of Nitta et al (1984) for zeolite 5A, are: ∆H ads ,= 13.2 Kcal/gmol; n = 5; q max = 13.0 g/100g; K 0 = 2.04 x 10 -5 atm -1 . Table 1 presents the operation conditions for n-pentane separation.…”

Section: Resultsmentioning

confidence: 99%

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Numerical study of n-pentane separation using adsorption column

Silva

Mariani

Souza

et al. 2005

Braz. arch. biol. technol.

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Section: Resultsmentioning

confidence: 99%

“…In this work, the adsorption equilibrium isotherm described by Nitta et al (1984) and presented by Silva and Rodrigues (1997a) is used. For the numerical solution of the differential equations describing the problem, the control volume method is employed (Patankar, 1980).…”

Section: Mathematical Formulationmentioning

confidence: 99%

Numerical study of n-pentane separation using adsorption column

Silva

Mariani

Souza

et al. 2005

Braz. arch. biol. technol.

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“…In the previous multi-component adsorption kinetic models [26][27][28][29][30][31] in Table S1), there is no the rate equation on the adsorbent, the adsorbent fraction that should be occupied by each adsorbate was only considered.…”

Section: The Comparison Of Kinetic Parameters On Competitive Adsorptionmentioning

confidence: 99%

A New Adsorption Rate Equation in Batch Systems

Hong¹,

Sin²,

Pak³

et al. 2018

Preprint

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In this paper, the deficiencies and cause of previous adsorption kinetic models were revealed, ne w adsorption rate equation has been proposed and its validities were verified by kinetic analysis of various experimental data. This work is a new vie w on the adsorption kinetics rather than a comment on the previous adsorption papers.Many adsorption kinetic models had been proposed and used during about 120 years. The frequently used and recently established 28 models 1-31 were listed in Table S1. The development of adsorption kinetic model has been conducted to obtain the specific models that agree better with the experimental data, as the result, dozens of kinetic models were established. The most of them were based on the Lagergren model 1 (in 1898) and Langmuir kinetic model 24 (in 1918), there were no innovative development. The Deficiencies and Cause of Previous Adsorption Kinetic ModelsCan those be used for the calculation of activation e nergy? One of the important objectives of kinetic study is to evaluate activation energy. Activation energy is the energy which must be available to a chemical system with potential reactants to result in a reaction. Activation energy is obtained by Arrhenius equation and the rate constants of different temperature.Activation energy can't be evaluated by the many of previous adsorption kinetic models, such as the pseudo-order models [1][2][3][4][12][13][14][15] and its changed types [5][6][7][8][20][21][22][23] . These models involve the adsorption amount q e (No. 1-9 and No. 13-21 in Table S1). When Arrhenius equation is used to calculate activation energy, the rate constants must be a constant at given temperature. However, not only the

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“…The equilibrium behavior of the activated carbon is described by a multi-site Langmuir isotherm [35]:…”

Section: Sensitivity Analysismentioning

confidence: 99%

Comprehensive analysis on the performance of an IGCC plant with a PSA process integrated for CO2 capture

Riboldi

Bolland

2015

International Journal of Greenhouse Gas Control

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The main goal of this paper is to provide a comprehensive overview on the performance of an Integrated Gasification Combined Cycle (IGCC) implementing CO2 capture through a Pressure Swing Adsorption (PSA) process. The methodology for integrating a PSA process into the IGCC plant is first defined and then a full-plant model is developed. A reference case is outlined both for the PSA-based plant and for an absorption-based plant. Physical absorption is considered the benchmark technology for the application investigated. The full-plant model allowed an assessment of the potentials of PSA in this framework. The plant performance obtained was evaluated mainly in terms of energy penalty and CO2 separation efficiency. Several process configurations and operating conditions were tested. The results of these simulations demonstrated the influence of the PSA process on the overall performance and the possibility to shape it according to specific requirements. A sensitivity analysis on the adsorbent material was also carried out, aiming to establish the possible performance enhancements connected to advancements in the material. Improving the properties of the adsorbent demonstrated to have a strong impact not only on the CO2 separation process but also on the performance of the entire plant. However, nor modifications in the process or in the material were able to fully close the gap with absorption. In this sense a synergetic approach for addressing further performance enhancements is outlined, based on the close collaboration between process engineering and material science.

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An adsorption isotherm of multi-site occupancy model for homogeneous surface.

Cited by 165 publications

References 0 publications

Numerical study of n-pentane separation using adsorption column

Numerical study of n-pentane separation using adsorption column

A New Adsorption Rate Equation in Batch Systems

Comprehensive analysis on the performance of an IGCC plant with a PSA process integrated for CO2 capture

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