화학공학소재연구정보센터
Journal of Chemical Thermodynamics, Vol.111, 100-105, 2017
CO2 solubility in aqueous potassium lysinate solutions at absorber conditions
In this work, CO2 solubility in aqueous potassium lysinate solutions has been measured for the concentrations of (1.25-3.28) mol.kg (1) and at temperatures of (313-343) K. The vapour-liquid equilibrium data were correlated using a Soft model and a semi-empirical (SE) model. The proposed models can match well with the experimental data with AAD within 20%. The heat of absorption for LysK was estimated as about (55-70) kJ.mol (1) CO2 absorbed from the solubility data. The lower heat of absorption, compared with that of 30 mass% MEA, will be beneficial for the reduction of regeneration energy. (C) 2017 Elsevier Ltd.