Journal article
A study of the vapour-liquid equilibrium of CO2 in mixed solutions of potassium carbonate and potassium glycinate
A Lee, M Wolf, N Kromer, KA Mumford, NJ Nicholas, SE Kentish, GW Stevens
International Journal of Greenhouse Gas Control | Published : 2015
Abstract
The vapour-liquid equilibrium of CO2 above a solution of potassium carbonate and potassium glycinate was studied in a dynamic equilibrium apparatus, with a stationary liquid phase and moving gas phase. The partial pressure of CO2 and liquid phase speciation was measured for solutions containing 4.82mol potassium carbonate/kg water and 0.64, 1.36, 2.16 and 3.06mol potassium glycinate/kg water across a range of loadings at temperatures of 50°C, 60°C and 70°C. It was found that the partial pressure of CO2 decreased significantly as the concentration of potassium glycinate increased, indicating that the potassium glycinate was acting as an additional mode of CO2 capture within the solution. This..
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Funding Acknowledgements
The authors wish to acknowledge funding provided by the Australian government through its CRC program and infrastructure support from the Particulate Fluids Processing Centre (PFPC), a Special Research Centre of the Australian Research Council, and the Ernest Solvay Foundation.