Measurement of competitive $$\text {CO}_{2}$$ and $$\text {H}_{2}\text {O}$$ adsorption on zeolite 13X for post-combustion $$\text {CO}_{2}$$ capture

Wilkins, Nicholas Stiles; Sawada, James A.; Rajendran, Arvind

doi:10.1007/s10450-020-00199-3

Cited by 48 publications

(72 citation statements)

References 29 publications

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“…Amongst these adsorbents, Zeolite 13X is the most widely studied adsorbent due to its commercial availability, low cost and high CO 2 capacity [11,12]. A major drawback of this adsorbent is its hydrophilicity and that the strong adsorption of water affects the adsorption of CO 2 [19,20]. Although it is possible to achieve 95 % CO 2 purity and 90 % CO 2 capture rate at low water concentrations, it is necessary to introduce an initial layer of desiccant in the adsorption column or use a separate column packed with a desiccant in order for the VSA process to operate efficiently at higher moisture contents [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Screening Supported Amine Sorbents in the Context of Post‐combustion Carbon Capture by Vacuum Swing Adsorption

Krishnamurthy

Boon

Grande

et al. 2021

Chemie Ingenieur Technik

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The aim of this work was to evaluate the performance of three different supported amine sorbents in a 6-step vacuum swing adsorption (VSA) cycle through process simulation and optimization for a representative post-combustion CO 2 capture system. Detailed process optimization revealed that all the adsorbents were able to achieve the desired purityrecovery targets. The best performing adsorbent in terms of productivity was Lewatit with a productivity of 0.48 mol m -3 ads s -1 . All the adsorbents exhibited similar minimum specific energy value of around 1 MJ kg -1 on an electric basis.

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Section: Introductionmentioning

confidence: 99%

Screening Supported Amine Sorbents in the Context of Post‐combustion Carbon Capture by Vacuum Swing Adsorption

Krishnamurthy

Boon

Grande

et al. 2021

Chemie Ingenieur Technik

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“…This is not surprising given that Zeolite 13X is a large pore zeolite with windows that are approximately twice the kinetic diameter of CO 2 , therefore it is not possible to measure diffusion in small crystals using existing macroscopic techniques. CO 2 in beads of 13X is macropore diffusion limited, something that now seems to be widely understood (Wilkins and Rajendran 2019;Hu et al 2014;Park et al 2016;Hossain et al 2019;Krishnamurthy et al 2014).…”

Section: Nonlinear Isothermmentioning

confidence: 99%

The zero length column technique to measure adsorption equilibrium and kinetics: lessons learnt from 30 years of experience

Brandani

Mangano

2020

Adsorption

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The zero length column technique has been developed over the past 30 years as a versatile experimental method to measure adsorption equilibrium and kinetics. In this review we discuss in detail the theory that forms the basis for the technique in order to understand how to design and operate efficiently a system. Experimental checks that should be performed to ensure the correct interpretation of the dynamic response are presented and examples are used to identify how to avoid major errors in determining diffusion time constants. The review concludes with an overview of all experimental studies available in the literature to date and a set of recommendations that should help improve the standard in the reported equilibrium and kinetic properties.

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“…The adsorption of CO 2 on zeolite 13X was described using a dualsite Langmuir (DSL) isotherm. CH 4 equilibrium data on zeolite 13X was also fitted with a DSL isotherm to better estimate competition between CH 4 and CO 2 using an equal-energy sites (EES) approximation [8]. The dual-site Langmuir isotherm is shown below:…”

Section: Volumetric Single-component Equilibriummentioning

confidence: 99%

“…10b with IAST predictions as solid lines and equal energy sites (EES) DSL predictions as the dashed line. The EES DSL model is an extended DSL model, where the single-site Langmuir isotherm parameters for the light component are used in a DSL model where the saturation loadings (q sat b and q sat d ) are the same as the heavy component [8]. Note that the EES DSL predictions for CO 2 are indistinguishable from the IAST predicitions.…”

Section: Competitive Binary Breakthrough Experimentsmentioning

confidence: 99%

A quantitive microscale dynamic column breakthrough apparatus for measurement of unary and binary adsorption equilibrium on milligram quantities of adsorbent

Wilkins

Sawada

Rajendran

2022

Preprint

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A microscale dynamic column breakthrough (μDCB) apparatus with the ability to measure unary and binary adsorption equilibrium on a milligram-scale quantity of adsorbent is described. The μDCB is a low cost system that can be constructed through minor modifications of a commercial gas chromatograph and uses a thermal conductivity detector. The small scale of the apparatus allows for the rapid collection of dynamic column breakthrough experiments. The mass balances for adsorption and desorption experiments were derived along with a description of the blank. The μDCB apparatus was tested with 238.9 mg of zeolite 13X and 180.2 mg of activated carbon with single-component N2/He and CH4/He adsorption and desorption measurements. The measured equilibrium data agreed well with volumetrically collected data. These measurements are both accurate and precise. Multicomponent adsorption was also studied on zeolite 13X and activated carbon for CH4/N2 and CO2/CH4 mixtures. This data was compared with ideal and adsorbed solution theory, extended dual-site Langmuir calculations and the literature.

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Measurement of competitive $$\text {CO}_{2}$$ and $$\text {H}_{2}\text {O}$$ adsorption on zeolite 13X for post-combustion $$\text {CO}_{2}$$ capture

Cited by 48 publications

References 29 publications

Screening Supported Amine Sorbents in the Context of Post‐combustion Carbon Capture by Vacuum Swing Adsorption

Screening Supported Amine Sorbents in the Context of Post‐combustion Carbon Capture by Vacuum Swing Adsorption

The zero length column technique to measure adsorption equilibrium and kinetics: lessons learnt from 30 years of experience

A quantitive microscale dynamic column breakthrough apparatus for measurement of unary and binary adsorption equilibrium on milligram quantities of adsorbent

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