eprintid: 5819
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/58/19
datestamp: 2023-11-09 16:17:33
lastmod: 2023-11-09 16:17:33
status_changed: 2023-11-09 16:03:58
type: article
metadata_visibility: show
creators_name: Wong, M.K.
creators_name: Bustam, M.A.
creators_name: Shariff, A.M.
title: Chemical speciation of CO2 absorption in aqueous monoethanolamine investigated by in situ Raman spectroscopy
ispublished: pub
keywords: Absorption spectroscopy; Carbon dioxide; Chemical analysis; Ethanolamines; Liquids; Raman spectroscopy; Solubility; Spectroscopic analysis; Spectrum analysis, CO2 absorption; In-situ Raman spectroscopy; Lorentzian functions; Peak fitting; Speciation; Species concentration; Spectroscopic characterization; Vibrational assignment, Chemical speciation, absorption; carbon dioxide; carbon emission; carbon sequestration; quantitative analysis; Raman spectroscopy; solubility; speciation (chemistry)
note: cited By 49
abstract: A quantitative analysis method of chemical species in liquid phase during CO2 absorption into monoethanolamine was developed for Raman spectroscopy. Band envelopes in the spectral region between 300 and 3100cm-1 were resolved with Gaussian Lorentzian function. Spectroscopic characterization of MEA, protonated MEA, carbamate, bicarbonate, carbonate and molecular CO2 in aqueous was performed. Calibration curves were constructed with area ratio plotted against species concentration. Concentration of individual chemical species in liquid phase can be systematically determined using the correlations introduced. Experiments of CO2 solubility in aqueous MEA were carried out for pressure ranges from 1 to 60bar and three temperatures (303.15, 313.15 and 323.15) K with in situ Raman measurement. Absorption capacity was determined with conventional gas pressure drop method and newly developed Raman spectroscopic analysis method based on total carbon containing species in liquid phase. Results depict good accuracy and reproducibility of Raman measurement method. Chemical speciation during CO2 absorption into aqueous solution of 30 MEA at pressure up to 60bar was evaluated. The findings from present work will improve the understanding of phase equilibrium behavior associated with absorption reactions and can be employed for monitoring, analysis and optimization of CO2 capture process. © 2015 Elsevier Ltd.
date: 2015
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929617518&doi=10.1016%2fj.ijggc.2015.05.016&partnerID=40&md5=27899f1495687a18d0e207d895ca1690
id_number: 10.1016/j.ijggc.2015.05.016
full_text_status: none
publication: International Journal of Greenhouse Gas Control
volume: 39
pagerange: 139-147
refereed: TRUE
issn: 17505836
citation:   Wong, M.K. and Bustam, M.A. and Shariff, A.M.  (2015) Chemical speciation of CO2 absorption in aqueous monoethanolamine investigated by in situ Raman spectroscopy.  International Journal of Greenhouse Gas Control, 39.  pp. 139-147.  ISSN 17505836