Repozytorium publikacji - Politechnika Gdańska

This study explored the optimal concentration of 1,4-butanediol for maximizing CO2 absorption and minimizing ammonia desorption. Mineral carbonation of gypsum slurry was carried out in a bubble reactor with a magnetic stirrer maintaining constant speed for 1 hour. The gas introduced to the reactor was a mixture of CO2 and air. The gas flow was controlled by the mass controllers. Gas sensors were used to determine the concentration of CO2 and NH3 in the outlet gas. The initial and final pH values were measured. The liquid phase was ammonia solutions at a concentration of 1.69 mol.dm-3 with the addition of varying concentrations of 1,4-butanediol (ranging from 0.1 to 0.5 mol. dm-3). The ratio of gypsum to liquid phase was maintained as 1:14 (kg. dm-3). Based on measured CO2 and NH3 concentrations, the efficiency of carbon dioxide absorption and the efficiency of ammonia escape inhibition were calculated.

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