Akademik Veri Yönetim Sistemi
CHEMICAL ENGINEERING JOURNAL, cilt.533, 2026 (SCI-Expanded, Scopus)
The development of hybrid solution combinations for CO2 absorption has come to the fore. Amino acid salt solutions, with their negligible volatility and oxidative stability, are attractive alternatives to amines for CO2 removal from flue gas. In this work, experiments were conducted with the potassium salts of glycine (KGly) and u-alanine (Ku-Ala), as well as their binary mixture hybrid solution (KGly + Ku-Ala). The densities and viscosities of the solutions were determined at different concentrations (0.1, 0.25, 0.50, and 0.75 mol/L) and temperatures (20-50/60 degrees C). Correlations were developed for density and viscosity. The Weisenberger and Schumpe's methods were used to determine Henry's constant values at different concentrations (0.1-0.75 mol/L) and temperatures (20-50 degrees C). The modified Stokes-Einstein relation and the N2O:CO2 analogy were used for the diffusivity of CO2. Then, the CO2 absorption capacity and dissolution rate of KGly, Ku-Ala, and KGly+Ku-Ala hybrid systems were determined at different concentrations (0.1-0.75 mol/L) using a stirred-cell system. The hybrid solution showed 1.32 times the CO2 absorption capacity of KGly and 1.21 times that of Ku-Ala at the highest concentration. The results revealed that the KGly+Ku-Ala hybrid solution have potential for CO2 absorption.