A comprehensive kinetic and thermodynamic study of CO2 absorption in blends of monoethanolamine and potassium lysinate

Experimental and modeling

Rouzbeh Ramezani, Saeed Mazinani, Renzo Di Felice

Research output: Contribution to journalArticle

Abstract

In this work, a kinetic and thermodynamic study of CO2 absorption in blends of monoethanolamine (MEA) and potassium lysinate (K-Lys) solutions was carried out at low CO2 partial pressures and temperatures (303–323 K). The CO2 loading capacity, density and viscosity of MEA + K-Lys solutions were measured. A modified Kent-Eisenberg model was applied to predict the CO2 loading capacity and also to determine the reaction equilibrium constants for the MEA + K-Lys system. The results showed that the model predictions are in excellent agreement with the experimental data. In order to study the reaction kinetics between CO2 and the MEA + K-Lys solution, the values of the reaction rate constant, the overall reaction kinetic constant, reaction order, physical solubility and CO2 diffusivity were determined. Finally, the absorption performance of the MEA + K-Lys system was compared with other common CO2 absorbents in terms of absorption heat, CO2 loading capacity and absorption rate. It was found that MEA + K-Lys has a better performance compared to other absorbents which makes it an attractive alternative to alkanolamines for CO2 capture.

Original languageEnglish
Pages (from-to)187-202
Number of pages16
JournalChemical Engineering Science
Volume206
DOIs
Publication statusPublished - Oct 12 2019

Fingerprint

Ethanolamine
Potassium
Thermodynamics
Reaction kinetics
Kinetics
Alkanolamines
Equilibrium constants
Partial pressure
Reaction rates
Rate constants
Solubility
Viscosity
Temperature

Keywords

  • Amino acid
  • CO capture
  • Kent-Eisenberg
  • Kinetic study
  • Thermodynamic modeling

ASJC Scopus subject areas

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

Cite this

A comprehensive kinetic and thermodynamic study of CO2 absorption in blends of monoethanolamine and potassium lysinate : Experimental and modeling. / Ramezani, Rouzbeh; Mazinani, Saeed; Di Felice, Renzo.

In: Chemical Engineering Science, Vol. 206, 12.10.2019, p. 187-202.

Research output: Contribution to journalArticle

@article{53ce64e837134d5eac4d05e6e5c12018,
title = "A comprehensive kinetic and thermodynamic study of CO2 absorption in blends of monoethanolamine and potassium lysinate: Experimental and modeling",
abstract = "In this work, a kinetic and thermodynamic study of CO2 absorption in blends of monoethanolamine (MEA) and potassium lysinate (K-Lys) solutions was carried out at low CO2 partial pressures and temperatures (303–323 K). The CO2 loading capacity, density and viscosity of MEA + K-Lys solutions were measured. A modified Kent-Eisenberg model was applied to predict the CO2 loading capacity and also to determine the reaction equilibrium constants for the MEA + K-Lys system. The results showed that the model predictions are in excellent agreement with the experimental data. In order to study the reaction kinetics between CO2 and the MEA + K-Lys solution, the values of the reaction rate constant, the overall reaction kinetic constant, reaction order, physical solubility and CO2 diffusivity were determined. Finally, the absorption performance of the MEA + K-Lys system was compared with other common CO2 absorbents in terms of absorption heat, CO2 loading capacity and absorption rate. It was found that MEA + K-Lys has a better performance compared to other absorbents which makes it an attractive alternative to alkanolamines for CO2 capture.",
keywords = "Amino acid, CO capture, Kent-Eisenberg, Kinetic study, Thermodynamic modeling",
author = "Rouzbeh Ramezani and Saeed Mazinani and {Di Felice}, Renzo",
year = "2019",
month = "10",
day = "12",
doi = "10.1016/j.ces.2019.05.039",
language = "English",
volume = "206",
pages = "187--202",
journal = "Chemical Engineering Science",
issn = "0009-2509",
publisher = "Elsevier",

}

TY - JOUR

T1 - A comprehensive kinetic and thermodynamic study of CO2 absorption in blends of monoethanolamine and potassium lysinate

T2 - Experimental and modeling

AU - Ramezani, Rouzbeh

AU - Mazinani, Saeed

AU - Di Felice, Renzo

PY - 2019/10/12

Y1 - 2019/10/12

N2 - In this work, a kinetic and thermodynamic study of CO2 absorption in blends of monoethanolamine (MEA) and potassium lysinate (K-Lys) solutions was carried out at low CO2 partial pressures and temperatures (303–323 K). The CO2 loading capacity, density and viscosity of MEA + K-Lys solutions were measured. A modified Kent-Eisenberg model was applied to predict the CO2 loading capacity and also to determine the reaction equilibrium constants for the MEA + K-Lys system. The results showed that the model predictions are in excellent agreement with the experimental data. In order to study the reaction kinetics between CO2 and the MEA + K-Lys solution, the values of the reaction rate constant, the overall reaction kinetic constant, reaction order, physical solubility and CO2 diffusivity were determined. Finally, the absorption performance of the MEA + K-Lys system was compared with other common CO2 absorbents in terms of absorption heat, CO2 loading capacity and absorption rate. It was found that MEA + K-Lys has a better performance compared to other absorbents which makes it an attractive alternative to alkanolamines for CO2 capture.

AB - In this work, a kinetic and thermodynamic study of CO2 absorption in blends of monoethanolamine (MEA) and potassium lysinate (K-Lys) solutions was carried out at low CO2 partial pressures and temperatures (303–323 K). The CO2 loading capacity, density and viscosity of MEA + K-Lys solutions were measured. A modified Kent-Eisenberg model was applied to predict the CO2 loading capacity and also to determine the reaction equilibrium constants for the MEA + K-Lys system. The results showed that the model predictions are in excellent agreement with the experimental data. In order to study the reaction kinetics between CO2 and the MEA + K-Lys solution, the values of the reaction rate constant, the overall reaction kinetic constant, reaction order, physical solubility and CO2 diffusivity were determined. Finally, the absorption performance of the MEA + K-Lys system was compared with other common CO2 absorbents in terms of absorption heat, CO2 loading capacity and absorption rate. It was found that MEA + K-Lys has a better performance compared to other absorbents which makes it an attractive alternative to alkanolamines for CO2 capture.

KW - Amino acid

KW - CO capture

KW - Kent-Eisenberg

KW - Kinetic study

KW - Thermodynamic modeling

UR - http://www.scopus.com/inward/record.url?scp=85066076253&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85066076253&partnerID=8YFLogxK

U2 - 10.1016/j.ces.2019.05.039

DO - 10.1016/j.ces.2019.05.039

M3 - Article

VL - 206

SP - 187

EP - 202

JO - Chemical Engineering Science

JF - Chemical Engineering Science

SN - 0009-2509

ER -