In this work, CO2 absorption from simulated biogas is investigated using different blends of a PZ + AMP solution in an absorption system at CO2 partial pressures ranging between 20 and 110 kPa. The collected data were presented as CO2 removal profiles along the packed column and were evaluated in terms of CO2 removal efficiency () and average overall volumetric mass transfer coefficient in the gas phase (KÌ Ì Ì Ì Ì Ì ).Gav An increased PZ concentration in the AMP solution was found to significantly increase the CO2 removal efficiency and Ì Ì Ì Ì Ì Ì KGav values. It was observed that, when conducted at different CO2 partial pressures, gas and liquid flow rates, and chemical concentrations, the Lamine/Gco2 ratio strongly influenced the process behaviour in the packed column. Additionally, the optimal inlet liquid temperature was observed to be 35 ± 2 °C in this study. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.