The effect of surfactant concentration on the rate of co2 absorption by carbonate solution in packed tower

الملخص EN

Absorption of carbon dioxide from gaseous mixture (carbon dioxide, air) was studied by using Carbonate Solution (Na2CO3) in a counter-current packed column (7.5 cm id, 1.70 m height), packed with glass rashing rings of 1.8 cm i.d to a depth of 1.1 m.

The effect of Surfactant concentration (dodecyl benzene sulfuric acid sodium (DBS)) (0.5, 1.5, 2.5gm / lit.), gas mass flux (0.05, 0.075, 0.1 kg / m2.sec) and liquid mass flux (kg / m2.

sec) on the absorption rate of carbon dioxide and mass transfer coefficient was studied at constant carbonate concentration (0.3 kmol / m3), inlet carbon dioxide concentration (0.08, Y2 = 0.086 mol CO2 / mol air), ambient temperature and atmospheric pressure.

The results show that the absorption rate tends to increase with increasing gas and liquid flow rate.

Mass transfer coefficient (KG.a) increases with increasing liquid flow rate and slightly change with increasing gas flow rate.

Increasing surfactant concentration (decreasing surface tension) leads to decrease the absorption rate and mass transfer coefficient.