Effect of Reaction Parameters on CO Absorption from Biogas Using CaO Sorbent Prepared from Waste Chicken Eggshell.

This study provides an efficient and straightforward approach to eliminate carbon dioxide (CO) by absorption using a calcium oxide (CaO) sorbent derived from chicken eggshells. The sorbent concentration, stirring speed, and contact time were varied. The optimal condition for CO removal was a 10% calcium hydroxide (Ca(OH)) suspension at 600 rpm with 20 min interaction.