Solubility of CO2 in aqueous sodium β-alaninate: Experimental study and modeling using Kent Eisenberg model

Add time:09/06/2019    Source:sciencedirect.com

In this work, the equilibrium solubility of CO2 in aqueous solution of 10, 20, and 30 wt% sodium β-alaninate (Na-βala) was investigated using high pressure solubility cell. The solubility experiments were carried out at temperatures 303.15, 313.15, and 333.15 K and over CO2 partial pressure ranging from 2 to 25 bar. Experimental results showed that with the increase in Na-βala concentration and temperature of the system, CO2 loading decreases. Whereas, the CO2 loading increases by increasing the partial pressure of CO2. Furthermore, a modified Kent–Eisenberg model was used to correlate CO2 solubility data as a function of temperature, concentration and CO2 partial pressure. An average absolute deviation of 12.8% was obtained between the experimental and model correlated data, which indicated the good correlation capability of the applied model.

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