Measurement and correlation of the solubility of carbon dioxide in the mixtures of aqueous monoethanolamine solution and benzoic acid

Hyun Seung Lee, Myoung Do Seo, Jeong Won Kang, Dae Ryook Yang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The solubility of CO2 in the mixture of aqueous monoethanolamine (MEA) with benzoic acid was measured and correlated using a reaction-phase equilibrium model. The solubility of CO2 in 15 wt % aqueous MEA solution was measured at a temperature of 313.2 K and pressures up to 200 kPa. Also, the solubility of CO2 in the mixtures with various weight ratios of benzoic acid, MEA, and water were measured at a temperature of 313.2 K and pressures ranging from (1 to 250) kPa. The weight ratios (acid/MEA/water) were 1:15:85, 2:15:85, 10:15:85, 15:15:85, 1:14:85, 2:13:85, and 5:10:85. Reaction equilibrium constants of the Kent-Eisenberg model were used for the CO2-MEA-water mixture, and new equilibrium constants involving benzoic acid were estimated using experimental data. The concentration of species in the liquid phase was estimated as a function of CO2 loading, and the effect of adding benzoic acid can be predicted within reasonable accuracy using the proposed model.

Original languageEnglish
Pages (from-to)3744-3750
Number of pages7
JournalJournal of Chemical and Engineering Data
Volume57
Issue number12
DOIs
Publication statusPublished - 2012 Dec 13

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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