Experimental and theoretical insight of nonisothermal adsorption kinetics for a single component adsorbent–adsorbate system

A theoretical framework is proposed to describe the temperature-dependent adsorption kinetics and their interpretation of measured uptake curves of four types of adsorbate, namely, methane and halogenated refrigerants (R134a, R410a, and R507a) onto a pitch-based activated carbon, Maxsorb III. The mo...

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Main Authors: Loh, Wai Soong, Chakraborty, Anutosh, Saha, Bidyut Baran, Ng, Kim Choon
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2013
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Online Access:https://hdl.handle.net/10356/105595
http://hdl.handle.net/10220/17944
http://dx.doi.org/10.1021/je201210t
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1055952019-12-06T21:54:14Z Experimental and theoretical insight of nonisothermal adsorption kinetics for a single component adsorbent–adsorbate system Loh, Wai Soong Chakraborty, Anutosh Saha, Bidyut Baran Ng, Kim Choon School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering A theoretical framework is proposed to describe the temperature-dependent adsorption kinetics and their interpretation of measured uptake curves of four types of adsorbate, namely, methane and halogenated refrigerants (R134a, R410a, and R507a) onto a pitch-based activated carbon, Maxsorb III. The model requires only two measurable data from the experiments, that is, the adsorbent temperature and system pressure during the adsorption dynamics. We have demonstrated that the temperature dependency adsorption has significant influence on the intrapellet diffusion coefficients of the linear driving force (LDF) model. A modified LDF model is proposed in this paper, and it is validated using the uptake behavior of these adsorbates; good agreement is found between the proposed kinetics model and the experimental uptake. The parameters postulated in the model are consistent and reproducible and agree well with a priori estimates. The model provides a useful theoretical basis for the analysis of rapid sorption processes for which the isothermal approximation is no longer valid. 2013-11-29T06:52:42Z 2019-12-06T21:54:14Z 2013-11-29T06:52:42Z 2019-12-06T21:54:14Z 2012 2012 Journal Article Loh, W. S., Chakraborty, A., Saha, B. B., & Ng, K. C. (2012). Experimental and theoretical insight of nonisothermal adsorption kinetics for a single component adsorbent–adsorbate system. Journal of chemical & engineering data, 57(4), 1174-1185. https://hdl.handle.net/10356/105595 http://hdl.handle.net/10220/17944 http://dx.doi.org/10.1021/je201210t en Journal of chemical & engineering data
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Mechanical engineering
spellingShingle DRNTU::Engineering::Mechanical engineering
Loh, Wai Soong
Chakraborty, Anutosh
Saha, Bidyut Baran
Ng, Kim Choon
Experimental and theoretical insight of nonisothermal adsorption kinetics for a single component adsorbent–adsorbate system
description A theoretical framework is proposed to describe the temperature-dependent adsorption kinetics and their interpretation of measured uptake curves of four types of adsorbate, namely, methane and halogenated refrigerants (R134a, R410a, and R507a) onto a pitch-based activated carbon, Maxsorb III. The model requires only two measurable data from the experiments, that is, the adsorbent temperature and system pressure during the adsorption dynamics. We have demonstrated that the temperature dependency adsorption has significant influence on the intrapellet diffusion coefficients of the linear driving force (LDF) model. A modified LDF model is proposed in this paper, and it is validated using the uptake behavior of these adsorbates; good agreement is found between the proposed kinetics model and the experimental uptake. The parameters postulated in the model are consistent and reproducible and agree well with a priori estimates. The model provides a useful theoretical basis for the analysis of rapid sorption processes for which the isothermal approximation is no longer valid.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Loh, Wai Soong
Chakraborty, Anutosh
Saha, Bidyut Baran
Ng, Kim Choon
format Article
author Loh, Wai Soong
Chakraborty, Anutosh
Saha, Bidyut Baran
Ng, Kim Choon
author_sort Loh, Wai Soong
title Experimental and theoretical insight of nonisothermal adsorption kinetics for a single component adsorbent–adsorbate system
title_short Experimental and theoretical insight of nonisothermal adsorption kinetics for a single component adsorbent–adsorbate system
title_full Experimental and theoretical insight of nonisothermal adsorption kinetics for a single component adsorbent–adsorbate system
title_fullStr Experimental and theoretical insight of nonisothermal adsorption kinetics for a single component adsorbent–adsorbate system
title_full_unstemmed Experimental and theoretical insight of nonisothermal adsorption kinetics for a single component adsorbent–adsorbate system
title_sort experimental and theoretical insight of nonisothermal adsorption kinetics for a single component adsorbent–adsorbate system
publishDate 2013
url https://hdl.handle.net/10356/105595
http://hdl.handle.net/10220/17944
http://dx.doi.org/10.1021/je201210t
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