Sorption Equilibria and Kinetics of CO                         2                         , N                         2                         , and H                         2                         O on KOH-Treated Activated Carbon

Lei Liu; Seongmin Jin; Yongha Park; Young Cheol Park; Chang Ha Lee

doi:10.1021/acs.iecr.8b03862

Sorption Equilibria and Kinetics of CO ₂ , N ₂ , and H ₂ O on KOH-Treated Activated Carbon

Lei Liu, Seongmin Jin, Yongha Park, Young Cheol Park, Chang Ha Lee

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The equilibria and kinetics of CO ₂ , N ₂ , and H ₂ O on KOH-treated activated carbon (KOH-AC) were evaluated. The isotherms for the pure components were correlated with the Langmuir, dual-site Langmuir, Sips, and Brunauer-Emmett-Teller models. The saturated adsorption amounts followed the order qH2O > qCO2 ≫ qN2. When simulated gas composition of postcombustion CO ₂ capture (15 vol % CO ₂ , 4 vol % H ₂ O, and balanced N ₂ ) was simulated by the ideal adsorption solution theory, the adsorbed amount of H ₂ O was much higher than those of CO ₂ and N ₂ . The adsorption amount of CO ₂ dropped when H ₂ O was present. The CO ₂ uptake curves were well correlated with a nonisothermal kinetic model because the adsorption kinetics were controlled via heat generation and transfer. At the same temperature and pressure, the adsorption rates followed the order H ₂ O > CO ₂ > N ₂ . Understanding the adsorption behaviors of flue gas including H ₂ O is important in designing adsorptive CO ₂ capture processes using KOH-AC.

Original language	English
Pages (from-to)	17218-17225
Number of pages	8
Journal	Industrial and Engineering Chemistry Research
Volume	57
Issue number	50
DOIs	https://doi.org/10.1021/acs.iecr.8b03862
Publication status	Published - 2018 Dec 19

Bibliographical note

Funding Information:
We acknowledge Professor Colin Snape, University of Nottingham, U.K., for supplying the KOH-AC used in this study. This work was financially supported by the Korea Institute of Energy Technology Evaluation and Planning (20158510011280) and the Ministry of Trade, Industry & Energy.

Publisher Copyright:
Copyright © 2018 American Chemical Society.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

Access to Document

10.1021/acs.iecr.8b03862

Cite this

Liu, L., Jin, S., Park, Y., Park, Y. C., & Lee, C. H. (2018). Sorption Equilibria and Kinetics of CO ₂ , N ₂ , and H ₂ O on KOH-Treated Activated Carbon Industrial and Engineering Chemistry Research, 57(50), 17218-17225. https://doi.org/10.1021/acs.iecr.8b03862

Liu, Lei ; Jin, Seongmin ; Park, Yongha et al. / Sorption Equilibria and Kinetics of CO ₂ , N ₂ , and H ₂ O on KOH-Treated Activated Carbon In: Industrial and Engineering Chemistry Research. 2018 ; Vol. 57, No. 50. pp. 17218-17225.

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title = " Sorption Equilibria and Kinetics of CO 2 , N 2 , and H 2 O on KOH-Treated Activated Carbon ",

abstract = " The equilibria and kinetics of CO 2 , N 2 , and H 2 O on KOH-treated activated carbon (KOH-AC) were evaluated. The isotherms for the pure components were correlated with the Langmuir, dual-site Langmuir, Sips, and Brunauer-Emmett-Teller models. The saturated adsorption amounts followed the order qH2O > qCO2 ≫ qN2. When simulated gas composition of postcombustion CO 2 capture (15 vol % CO 2 , 4 vol % H 2 O, and balanced N 2 ) was simulated by the ideal adsorption solution theory, the adsorbed amount of H 2 O was much higher than those of CO 2 and N 2 . The adsorption amount of CO 2 dropped when H 2 O was present. The CO 2 uptake curves were well correlated with a nonisothermal kinetic model because the adsorption kinetics were controlled via heat generation and transfer. At the same temperature and pressure, the adsorption rates followed the order H 2 O > CO 2 > N 2 . Understanding the adsorption behaviors of flue gas including H 2 O is important in designing adsorptive CO 2 capture processes using KOH-AC.",

author = "Lei Liu and Seongmin Jin and Yongha Park and Park, {Young Cheol} and Lee, {Chang Ha}",

note = "Funding Information: We acknowledge Professor Colin Snape, University of Nottingham, U.K., for supplying the KOH-AC used in this study. This work was financially supported by the Korea Institute of Energy Technology Evaluation and Planning (20158510011280) and the Ministry of Trade, Industry & Energy. Publisher Copyright: Copyright {\textcopyright} 2018 American Chemical Society.",

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Liu, L, Jin, S, Park, Y, Park, YC & Lee, CH 2018, ' Sorption Equilibria and Kinetics of CO ₂ , N ₂ , and H ₂ O on KOH-Treated Activated Carbon ', Industrial and Engineering Chemistry Research, vol. 57, no. 50, pp. 17218-17225. https://doi.org/10.1021/acs.iecr.8b03862

Sorption Equilibria and Kinetics of CO ₂ , N ₂ , and H ₂ O on KOH-Treated Activated Carbon . / Liu, Lei; Jin, Seongmin; Park, Yongha et al.

In: Industrial and Engineering Chemistry Research, Vol. 57, No. 50, 19.12.2018, p. 17218-17225.

Research output: Contribution to journal › Article › peer-review

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PY - 2018/12/19

Y1 - 2018/12/19

N2 - The equilibria and kinetics of CO 2 , N 2 , and H 2 O on KOH-treated activated carbon (KOH-AC) were evaluated. The isotherms for the pure components were correlated with the Langmuir, dual-site Langmuir, Sips, and Brunauer-Emmett-Teller models. The saturated adsorption amounts followed the order qH2O > qCO2 ≫ qN2. When simulated gas composition of postcombustion CO 2 capture (15 vol % CO 2 , 4 vol % H 2 O, and balanced N 2 ) was simulated by the ideal adsorption solution theory, the adsorbed amount of H 2 O was much higher than those of CO 2 and N 2 . The adsorption amount of CO 2 dropped when H 2 O was present. The CO 2 uptake curves were well correlated with a nonisothermal kinetic model because the adsorption kinetics were controlled via heat generation and transfer. At the same temperature and pressure, the adsorption rates followed the order H 2 O > CO 2 > N 2 . Understanding the adsorption behaviors of flue gas including H 2 O is important in designing adsorptive CO 2 capture processes using KOH-AC.

AB - The equilibria and kinetics of CO 2 , N 2 , and H 2 O on KOH-treated activated carbon (KOH-AC) were evaluated. The isotherms for the pure components were correlated with the Langmuir, dual-site Langmuir, Sips, and Brunauer-Emmett-Teller models. The saturated adsorption amounts followed the order qH2O > qCO2 ≫ qN2. When simulated gas composition of postcombustion CO 2 capture (15 vol % CO 2 , 4 vol % H 2 O, and balanced N 2 ) was simulated by the ideal adsorption solution theory, the adsorbed amount of H 2 O was much higher than those of CO 2 and N 2 . The adsorption amount of CO 2 dropped when H 2 O was present. The CO 2 uptake curves were well correlated with a nonisothermal kinetic model because the adsorption kinetics were controlled via heat generation and transfer. At the same temperature and pressure, the adsorption rates followed the order H 2 O > CO 2 > N 2 . Understanding the adsorption behaviors of flue gas including H 2 O is important in designing adsorptive CO 2 capture processes using KOH-AC.

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Liu L, Jin S, Park Y, Park YC, Lee CH. Sorption Equilibria and Kinetics of CO ₂ , N ₂ , and H ₂ O on KOH-Treated Activated Carbon Industrial and Engineering Chemistry Research. 2018 Dec 19;57(50):17218-17225. doi: 10.1021/acs.iecr.8b03862