The Study of Influence of Ammonium Salts Additive on Efficiency of Ca²⁺ Extraction in Inorganic Carbonation Using Two forms of Ready Mixed Concrete (RMC) and MEA

Abstract

There is still requirement of efficient CO₂ mitigation technologies. Carbon capture and utilization (CCU) in which CO₂ was captured and reused as useful products is rising as promising CO₂ mitigation technology. In this study, we dealt with inorganic carbonation, one of the CCU technology. Inorganic carbonation in which metal cations in various materials react with captured CO₂ produces useful products such as MgCO₃. Ready Mixed Concrete (RMC) recycling water, one of the industrial waste, was selected as metal ion (Ca²⁺) source. We used liquid and solid forms obtained from RMC recycling water. Liquid form was supernatant (RMC-L) as solvent of amine absorbents instead of water through filtering RMC recycling water and solid form as solid matter (RMC-S) dried after filtering RMC recycling water.