Abstract
This investigation elucidated the performance of the cross-flow rotating packed bed (RPB) in removing carbon dioxide (CO2) from indoor air by chemical absorption. MEA, NaOH, K2CO3 aqueous solutions were used as the model absorbents. The results of this investigation demonstrated that the removal efficiency of CO2 increased with rotational speed and liquid flow rate, but decreased with gas flow rate. Furthermore, the removal efficiency of CO2 could be enhanced when H2O2 with an appropriate concentration was added to the K2CO3 aqueous solution. The removal efficiency of CO2 was found with the order: 1.0mol/L MEA = 1.0mol/L NaOH > 5 wt% K2CO3/0.20mol/L H2O2 > 5 wt% K2CO3/0.1mol/L H2O2> 5 wt% K2CO3/0.05mol/L H2O2 > 5wt% K2CO3.
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