In industrial scale, removal of CO₂ by chemical absorption from raw biogas represents an imperative treatment and the cutting-edge technology towards improvement of its quality and heat value. In this work, CO₂ absorption studies were conducted in an absorption column packed with Sulzer metal gauze packing with simulated biogas absorbed using 30 wt. % of monoethanolamine (MEA) solution. Experimental works were conducted to determine the influence of different CO₂ concentrations in feed gas (30 % and 40 %) and L/G ratio (0.6 and 0.7) and subsequently assessed in terms of CO₂ absorption efficiency along the column. The results showed that 30 % CO₂ in feed gas has higher removal efficiency as compared to 40 % CO₂ with the ability to remove 94 % CO₂ during the process. In addition, the CO₂ absorption studied on the L/G ratio proved that CO₂ removal was improved at higher L/G ratio of 0.7.
