Quantification of aqueous monoethanolamine concentration by gas chromatography for postcombustion capture of CO2

Alicia J. Reynolds, T. Vincent Verheyen, Samuel B. Adeloju, Alan Chaffee, Erik Meuleman

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The availability of reliable analytical methods for measuring amine concentrations is necessary for optimum operation of aqueous amine CO 2 separation systems being employed for postcombustion capture (PCC) of CO2. A GC-FID (gas chromatography with flame ionization detection) method is described for the reliable quantification of 30% (w/w) monoethanolamine (MEA) in severely degraded solvent samples. The observation of intermittent splitting of the MEA peak was a major concern with this approach. The use of a wide-bore column led to improved MEA peak resolution and peak shape. The reliability and robustness of the GC-FID method were assessed by analyzing degraded 30% (w/w) MEA solvent samples from CSIRO's pilot plant at AGL's Loy Yang power station in Victoria, Australia. The results were compared with those obtained by titration and total organic carbon (TOC) measurements of the same samples. The MEA concentrations obtained by the GC-FID and titration methods were statistically similar. In contrast, the MEA concentrations calculated from TOC were consistently higher than those obtained by both GC-FID and titration.
Original languageEnglish
Pages (from-to)4805-4811
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Volume53
Issue number12
Early online date14 Mar 2014
DOIs
Publication statusPublished - 26 Mar 2014

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