Development of CO2 Absorption Using Blended Alkanolamine Absorbents for Multicycle Integrated Absorption–Mineralization

The present study aimed to investigate the feasibility of blended amine absorbents in improving CO2 alkanolamine-based absorption multicycle integrated absorption–mineralization (multicycle IAM) under standard operating conditions (20–25 °C and 1 atm). Multicycle IAM is a promising approach that transforms emissions into valuable products such as carbonates using solvents waste brine. Previously, use monoethanolamine (MEA) an absorbent had limitations terms conversion degradation, which led exploration alkanolamine absorbents, diethanolamine, triethanolamine, aminomethyl propanol (AMP) combined with MEA. was evaluated performance carbonate production continuous cycles absorption, precipitation/regeneration, preparation. results showed fourth cycle blend 15 wt.% AMP 5 MEA achieved high efficiency, approximately 87% absorbed being converted precipitated 43 min slight degradation efficiency 45%. This can improve capturing converting when compared single MEA, one alternative options for development capture utilization future.