Journals Proceedings

Abstract

Efficient and viable carbon capture technology is a panacea to sustainable use of fossil fuel with less discharge of carbon dioxide to the environment. This research work investigates the kinetics of reaction between carbon dioxide (CO2) and aqueous suspension solutions of mono-dispersed polyacrylate particles containing amine group using stopped flow technique. Two types of suspensions of mono dispersed aminated polyglycidylmethacrylate particles, poly(GMA) were synthesized: non-porous mono dispersed aminated particles, (NPGMA) and porous mono dispersed aminated particles, (PGMA). The dispersion polymerization process was applied to experimentally synthesize the polymer particles, poly(GMA) of average size 2μm in a glass sealed cylindrical reactor. The epoxy group on the micro surface was reacted with ammonia and become covalently attached to the primary amine group on the micro surface. The particles in colloidal suspensions were respectively reacted with CO2 in aqueous solution at 298 K and its kinetics were monitored and analyzed with stopped flow equipment. It was found that porous mono dispersed aminated poly(GMA), PGMA has a more favourable kinetic properties than the non-porous type. The observed reaction rate constant, ko of the former was found to be 18.37825 s-1 for 0.0270 g/ml at 298 K. Based on this study, it can be inferred that PGMA could be applied for CO2 capture. The PGMA is less corrosive, less energy intensive and therefore economical viable because unlike aqueous amine solution system, the slurry after absorbing CO₂ can be filtered to remove the water content and only the PGMA beads containing the captured CO₂ can be regenerated and recycled.