Analysis of CO2 Solubility and Absorption Heat into Aqueous 1-Diethylamino-2-propanol

Helei Liu, Raphael Idem, Paitoontontiwachwuthikul*, Zhiwu Liang, Wichitpan Rongwong, Mohammed Jaber Al-Marri, Abdelbaki Benamor

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

In this work, the CO2 equilibrium solubility in 2 M 1-diethylamino-2-propanol (1DEA2P) solution were determined as function of temperature (in the range of 298-333K), and CO2 partial pressure (in the range of 8-101 kPa). The modified Li-shen K2 correlation model was also developed and used to predicate the CO2 equilibrium solubility in 1DEA2P solution. with an excellent ADD of 3.4%. The heat of CO2 absorption in 1DEA2P solution estimated using Gibbs-Helmholtz equation was found to be -45.7 kJ/mol. In addition, the ion (1DEA2P, 1DEA2PH+, HCO3-, CO32-) speciation plots of the 1DEA2P-CO2-H2O system were developed in order to further understand the reaction process of 1DEA2P with CO2. Published by Elsevier Ltd.

Original languageEnglish
Pages (from-to)873-879
Number of pages7
JournalEnergy Procedia
Volume114
DOIs
Publication statusPublished - 2017
Externally publishedYes
Event13th International Conference on Greenhouse Gas Control Technologies, GHGT 2016 - Lausanne, Switzerland
Duration: 14 Nov 201618 Nov 2016

Keywords

  • 1DEA2P
  • CO absorption
  • Equilibrium CO solubility
  • Ion speciation plots
  • Liu-Helei model

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