Solubilities of CO2 in aqueous solutions of ionic liquids (ILs) and monoethanolamine (MEA) at pressures from 100 to 1600 kPa

Chemical Engineering Journal, Volumes 181–182, 1 February 2012, Pages 56–62
Solubilities of CO2 in aqueous solutions of ionic liquids (ILs) and monoethanolamine (MEA) at pressures from 100 to 1600 kPa
Malyanah Mohd Taib, Thanapalan Murugesan, ,
Chemical Engineering Department, Universiti Teknologi PETRONAS, Tronoh 31750, Perak, Malaysia
Abstract
Reports results of mixing two ionic liquids (ILs) - bis(2-hydroxyethyl)ammonium acetate (bheea) and 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF₄]) - with water/aqueous solutions of monoethanolamine to form new hybrid solvents for the absorption of CO₂.
Researchers ascertained the uptake of CO₂ in the aqueous mixtures of ILs + MEA for a range of compositions at pressures between 100 and 1600 kPa and at three different temperatures. For the case of aqueous (bheea) + MEA system, MEA acts as a supporting solvent.  In the other case, ([bmim][BF₄]) acts as a supporting solvent for CO₂ capture.
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