Addition of water in calcium based adsorbent for CO2 adsorption: Experimental and isotherm modelling studies

Nurulhuda Azmi; Nor Adilla Rashidi; Suzana Yusup; Khalik Mohamad Sabil

doi:10.3303/CET1652013

Addition of water in calcium based adsorbent for CO₂ adsorption: Experimental and isotherm modelling studies

Nurulhuda Azmi, Nor Adilla Rashidi, Suzana Yusup^*, Khalik Mohamad Sabil

^*Corresponding author for this work

School of Energy, Geoscience, Infrastructure and Society

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Citations (Scopus)

Abstract

In this work, a combined process of adsorption and gas hydrate formation is proposed as an alternative approach for the separation of carbon dioxide (CO₂) content from gas stream. The objective of this research is to study adsorption isotherms of the CO₂ gas onto the synthesized calcium oxide (CaO) via a static volumetric method at 2 °C at a different amount of water ratio (R_w). A large increment of CO₂ adsorption was observed on the wetted sample due to formation of CO₂ hydrates, particularly at high pressure. The highest adsorption capacity was obtained at R_w of 0.67. The experimental data of CO₂ adsorption isotherms for R_w = 0 and R_w = 0.67 are further analyzed by five isotherm models which are Langmuir, Freundlich, Redlich-Peterson (R-P), Toth and Sips. The Freundlich model satisfactorily describes the CO₂ adsorption onto the dried sample, whilst the R-P model is best fitted for the wetted sample.

Original language	English
Title of host publication	Chemical Engineering Transactions
Publisher	Italian Association of Chemical Engineering
Pages	73-78
Number of pages	6
ISBN (Electronic)	9788895608426
DOIs	https://doi.org/10.3303/CET1652013
Publication status	Published - Oct 2016

Publication series

Name	Chemical Engineering Transactions
Publisher	AIDIC
Volume	52
ISSN (Electronic)	2283-9216

ASJC Scopus subject areas

General Chemical Engineering

Access to Document

10.3303/CET1652013

Cite this

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title = "Addition of water in calcium based adsorbent for CO2 adsorption: Experimental and isotherm modelling studies",

abstract = "In this work, a combined process of adsorption and gas hydrate formation is proposed as an alternative approach for the separation of carbon dioxide (CO2) content from gas stream. The objective of this research is to study adsorption isotherms of the CO2 gas onto the synthesized calcium oxide (CaO) via a static volumetric method at 2 °C at a different amount of water ratio (Rw). A large increment of CO2 adsorption was observed on the wetted sample due to formation of CO2 hydrates, particularly at high pressure. The highest adsorption capacity was obtained at Rw of 0.67. The experimental data of CO2 adsorption isotherms for Rw = 0 and Rw = 0.67 are further analyzed by five isotherm models which are Langmuir, Freundlich, Redlich-Peterson (R-P), Toth and Sips. The Freundlich model satisfactorily describes the CO2 adsorption onto the dried sample, whilst the R-P model is best fitted for the wetted sample.",

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Addition of water in calcium based adsorbent for CO₂ adsorption: Experimental and isotherm modelling studies. / Azmi, Nurulhuda; Rashidi, Nor Adilla; Yusup, Suzana et al.
Chemical Engineering Transactions. Italian Association of Chemical Engineering, 2016. p. 73-78 (Chemical Engineering Transactions; Vol. 52).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AU - Sabil, Khalik Mohamad

PY - 2016/10

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N2 - In this work, a combined process of adsorption and gas hydrate formation is proposed as an alternative approach for the separation of carbon dioxide (CO2) content from gas stream. The objective of this research is to study adsorption isotherms of the CO2 gas onto the synthesized calcium oxide (CaO) via a static volumetric method at 2 °C at a different amount of water ratio (Rw). A large increment of CO2 adsorption was observed on the wetted sample due to formation of CO2 hydrates, particularly at high pressure. The highest adsorption capacity was obtained at Rw of 0.67. The experimental data of CO2 adsorption isotherms for Rw = 0 and Rw = 0.67 are further analyzed by five isotherm models which are Langmuir, Freundlich, Redlich-Peterson (R-P), Toth and Sips. The Freundlich model satisfactorily describes the CO2 adsorption onto the dried sample, whilst the R-P model is best fitted for the wetted sample.

AB - In this work, a combined process of adsorption and gas hydrate formation is proposed as an alternative approach for the separation of carbon dioxide (CO2) content from gas stream. The objective of this research is to study adsorption isotherms of the CO2 gas onto the synthesized calcium oxide (CaO) via a static volumetric method at 2 °C at a different amount of water ratio (Rw). A large increment of CO2 adsorption was observed on the wetted sample due to formation of CO2 hydrates, particularly at high pressure. The highest adsorption capacity was obtained at Rw of 0.67. The experimental data of CO2 adsorption isotherms for Rw = 0 and Rw = 0.67 are further analyzed by five isotherm models which are Langmuir, Freundlich, Redlich-Peterson (R-P), Toth and Sips. The Freundlich model satisfactorily describes the CO2 adsorption onto the dried sample, whilst the R-P model is best fitted for the wetted sample.

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