eprintid: 10193
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/01/93
datestamp: 2023-11-09 16:36:49
lastmod: 2023-11-09 16:36:49
status_changed: 2023-11-09 16:30:48
type: article
metadata_visibility: show
creators_name: Suleman, H.
creators_name: Maulud, A.S.
creators_name: Syalsabila, A.
title: Thermodynamic modelling of carbon dioxide solubility in aqueous amino acid salt solutions and their blends with alkanolamines
ispublished: pub
keywords: Alkanolamines; Amino acids; Butyric acid; Phase equilibria; Polynomials; Salts; Solubility; Solutions; Thermodynamics, 2-amino-2-methyl-1-propanol; Adjustable parameters; Alkanolamine; Detailed reaction mechanisms; Equilibrium thermodynamics; Mathematical equations; Thermodynamic approaches; Thermodynamic modelling, Carbon dioxide
note: cited By 14
abstract: In this study, two thermodynamic approaches, namely explicit model and modified Kent-Eisenberg model are presented for the accurate determination of carbon dioxide solubility in aqueous solutions of amino acid salts with different levels of complexity. Both models were further extended to the correlation of carbon dioxide solubility in aqueous blends of amino acid salts with alkanolamines. Firstly, the explicit model consists of a single mathematical equation. Its structure is computationally simple and derived from equilibrium thermodynamics theory. Secondly, the modified Kent-Eisenberg model utilizes detailed reaction mechanism for development of a polynomial equation, that is solved by combining all non-idealities in two correction factors. Both models suitably determined the thermodynamics of carbon dioxide loaded aqueous amino acid salt solutions and their blends with alkanolamines. The results were in good agreement with experimental data for representative amino acid salt solutions (potassium and/or sodium salts of lysine, glycine, proline, sarcosine, serine, threonine, alanine, phenylalanine, amino-butyric acid, glutamine and asparagine) and their blends with alkanolamines (2-amino-2-methyl-1-propanol and piperazine) for range of process parameters. For carbon dioxide solubility in aqueous amino acid salt solutions, the AARE for explicit and modified Kent-Eisenberg model was 13.85 and 13.84, respectively. For carbon dioxide solubility in aqueous blends of amino acid salt and alkanolamine solutions, the AARE for explicit and modified Kent-Eisenberg model was 18.25 and 17.25, respectively. Both models use a small number of adjustable parameters. This indicates that generated parameters are able to accurately predict the carbon dioxide solubility at other process conditions, with minimum computational intricacy. © 2018 Elsevier Ltd. All rights reserved.
date: 2018
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047515913&doi=10.1016%2fj.jcou.2018.05.014&partnerID=40&md5=65a6b709070f80c61fa30ba4209ad87b
id_number: 10.1016/j.jcou.2018.05.014
full_text_status: none
publication: Journal of CO2 Utilization
volume: 26
pagerange: 336-349
refereed: TRUE
issn: 22129820
citation:   Suleman, H. and Maulud, A.S. and Syalsabila, A.  (2018) Thermodynamic modelling of carbon dioxide solubility in aqueous amino acid salt solutions and their blends with alkanolamines.  Journal of CO2 Utilization, 26.  pp. 336-349.  ISSN 22129820